Create a QCOMPARE_3WAY macro to test the C++20 spaceship operator <=>

Since the C++20 spaceship operator <=> appeared in the standard,
qtest framework starts using it for tests. To make the way of
usage the spaceship operator convenient and informative,
the QCOMPARE_3WAY macro is added.

- Add QCOMPARE_3WAY macro usage testcases.
- Add threewaycompare test to setftests.

[ChangeLog][QtTest] Added the QCOMPARE_3WAY macro. The macro
tests the C++20 spaceship operator <=>

Fixes: QTBUG-104108
Change-Id: Ia14b26c1d70625ac8c6cf2278d597b2a8cbe31d0
Reviewed-by: Marc Mutz <[email protected]>

19 files changed, 2443 insertions, 9 deletions

diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
index 3c6d1adb34e..8431a9daeef 100644
--- a/src/testlib/qtestcase.cpp
+++ b/src/testlib/qtestcase.cpp
@@ -2836,6 +2836,54 @@ bool QTest::compare_helper(bool success, const char *failureMsg,
                                      file, line, failureMsg);
 }
 
+
+/*! \internal
+    \since 6.9
+    This function reports the result of a three-way comparison, when needed.
+
+    Aside from logging every check if in verbose mode and reporting an
+    unexpected pass when failure was expected, if \a success is \c true
+    this produces no output. Otherwise, a failure is reported. The output
+    on failure reports the expressions compared, their values, the actual
+    result of the comparison and the expected result of comparison, along
+    with the supplied failure message \a failureMsg and the \a file and
+    \a line number at which the error arose.
+
+    The expressions compared are supplied as \a lhsExpression and
+    \a rhsExpression.
+    These are combined, with \c{"<=>"}, to obtain the actual comparison
+    expression. Their actual values are pointed to by \a lhsPtr and
+    \a rhsPtr, which are formatted by \a lhsFormatter and \a rhsFormatter
+    as, respectively, \c lhsFormatter(lhsPtr) and \c rhsFormatter(rhsPtr).
+    The actual comparison expression is contrasted,
+    in the output, with the expected comparison expression
+    \a expectedExpression. Their respective values are supplied by
+    \a actualOrderPtr and \a expectedOrderPtr pointers, which are
+    formatted by \a orderFormatter.
+
+    If \a failureMsg is \nullptr a default is used. If a formatter
+    function returns \a nullptr, the text \c{"<null>"} is used.
+*/
+bool QTest::compare_3way_helper(bool success, const char *failureMsg,
+                                const void *lhsPtr, const void *rhsPtr,
+                                const char *(*lhsFormatter)(const void*),
+                                const char *(*rhsFormatter)(const void*),
+                                const char *lhsExpression, const char *rhsExpression,
+                                const char *(*orderFormatter)(const void*),
+                                const void *actualOrderPtr, const void *expectedOrderPtr,
+                                const char *expectedExpression,
+                                const char *file, int line)
+{
+    return QTestResult::report3WayResult(success, failureMsg,
+                                         lhsPtr, rhsPtr,
+                                         lhsFormatter, rhsFormatter,
+                                         lhsExpression, rhsExpression,
+                                         orderFormatter,
+                                         actualOrderPtr, expectedOrderPtr,
+                                         expectedExpression,
+                                         file, line);
+}
+
 /*! \internal
     \since 6.4
     This function is called by various specializations of QTest::qCompare
diff --git a/src/testlib/qtestcase.h b/src/testlib/qtestcase.h
index 6e7be04ba0a..033b2668252 100644
--- a/src/testlib/qtestcase.h
+++ b/src/testlib/qtestcase.h
@@ -14,7 +14,12 @@
 #include <QtCore/qsharedpointer.h>
 #include <QtCore/qtemporarydir.h>
 #include <QtCore/qthread.h>
+
+#ifdef __cpp_concepts
+#include <concepts>
+#endif
 #include <QtCore/qxpfunctional.h>
+#include <QtCore/qxptype_traits.h>
 #include <QtCore/q20utility.h>
 
 #include <string.h>
@@ -288,6 +293,17 @@ do {\
         QTEST_FAIL_ACTION; \
 } while (false)
 
+#ifdef __cpp_lib_three_way_comparison
+#define QCOMPARE_3WAY(lhs, rhs, order) \
+do { \
+        if (!QTest::qCompare3Way(lhs, rhs, order, #lhs, #rhs, #order, __FILE__, __LINE__)) \
+            QTEST_FAIL_ACTION; \
+} while (false)
+#else
+#define QCOMPARE_3WAY(...) \
+    static_assert(false, "QCOMPARE_3WAY test requires C++20 operator<=>()")
+#endif // __cpp_lib_three_way_comparison
+
 #ifdef QT_TESTCASE_BUILDDIR
 
 #ifndef QT_TESTCASE_SOURCEDIR
@@ -499,6 +515,17 @@ namespace QTest
                                          const char *actual, const char *expected,
                                          const char *file, int line);
 
+    Q_TESTLIB_EXPORT bool compare_3way_helper(bool success, const char *failureMsg,
+                                              const void *lhsPtr, const void *rhsPtr,
+                                              const char *(*lhsFormatter)(const void*),
+                                              const char *(*rhsFormatter)(const void*),
+                                              const char *lhsStr, const char *rhsStr,
+                                              const char *(*orderFormatter)(const void *),
+                                              const void *actualOrderPtr,
+                                              const void *expectedOrderPtr,
+                                              const char *expectedExpression,
+                                              const char *file, int line);
+
     Q_TESTLIB_EXPORT void addColumnInternal(int id, const char *name);
 
     template <typename T>
@@ -754,8 +781,54 @@ namespace QTest
         bool result = Comparator::compare(std::forward<T1>(lhs), std::forward<T2>(rhs));
         return doReport(result, std::forward<T1>(lhs), std::forward<T2>(rhs));
     }
-}
 
+#if defined(__cpp_lib_three_way_comparison)
+    template <typename OrderingType, typename LHS, typename RHS = LHS>
+    inline bool qCompare3Way(LHS &&lhs, RHS &&rhs, OrderingType order,
+                             const char *lhsExpression,
+                             const char *rhsExpression,
+                             const char *resultExpression,
+                             const char *file, int line)
+    {
+#if defined(__cpp_concepts)
+        static_assert(requires { lhs <=> rhs; },
+                      "The three-way comparison operator (<=>) is not implemented");
+#endif // __cpp_concepts
+        static_assert(QtOrderingPrivate::is_ordering_type_v<OrderingType>,
+                      "Please provide, as the order parameter, a value "
+                      "of one of the Qt::{partial,weak,strong}_ordering or "
+                      "std::{partial,weak,strong}_ordering types.");
+
+        const auto comparisonResult = std::forward<LHS>(lhs) <=> std::forward<RHS>(rhs);
+        static_assert(std::is_same_v<decltype(QtOrderingPrivate::to_Qt(comparisonResult)),
+                                     decltype(QtOrderingPrivate::to_Qt(order))>,
+                      "The expected and actual ordering types should be the same "
+                      "strength for proper comparison.");
+
+        const OrderingType actualOrder = comparisonResult;
+        using DLHS = q20::remove_cvref_t<LHS>;
+        using DRHS = q20::remove_cvref_t<RHS>;
+        using Internal::genericToString;
+
+        return compare_3way_helper(actualOrder == order,
+                                   "The result of operator<=>() is not what was expected",
+                                   std::addressof(lhs), std::addressof(rhs),
+                                   genericToString<DLHS>, genericToString<DRHS>,
+                                   lhsExpression, rhsExpression,
+                                   genericToString<OrderingType>,
+                                   std::addressof(actualOrder), std::addressof(order),
+                                   resultExpression, file, line);
+    }
+#else
+    template <typename OrderingType, typename LHS, typename RHS = LHS>
+    void qCompare3Way(LHS &&lhs, RHS &&rhs, OrderingType order,
+                      const char *lhsExpression,
+                      const char *rhsExpression,
+                      const char *resultExpression,
+                      const char *file, int line) = delete;
+#endif // __cpp_lib_three_way_comparison
+
+}
 
 #define QWARN(msg) QTest::qWarn(static_cast<const char *>(msg), __FILE__, __LINE__)
 
diff --git a/src/testlib/qtestcase.qdoc b/src/testlib/qtestcase.qdoc
index 7614f67312b..a736b18865f 100644
--- a/src/testlib/qtestcase.qdoc
+++ b/src/testlib/qtestcase.qdoc
@@ -269,6 +269,36 @@
     \sa QCOMPARE_EQ(), QCOMPARE_NE(), QCOMPARE_LT(), QCOMPARE_LE(), QCOMPARE_GT()
 */
 
+/*! \macro QCOMPARE_3WAY(lhs, rhs, order)
+    \since 6.9
+
+    \relates QTest
+
+    The QCOMPARE_3WAY() macro applies the three-way comparison operator \c {<=>}
+    to the input expressions \a lhs and \a rhs, and checks if the result
+    is \a order.
+    If that is true, execution continues. If not, a
+    failure is recorded in the test log and the test function returns without
+    attempting any later checks.
+    The macro only accepts Qt:: and std:: ordering types as \a order
+    argument, otherwise it asserts.
+    \note \a order can be a Qt:: ordering type even if a
+    \c {decltype(lhs <=> rhs)} is a std one.
+    The result of \c {decltype(lhs <=> rhs)} operation should have the same
+    strength as \a order. Otherwise, applying the macro will result in
+    a compilation error. For example, if the result of \c {decltype(lhs <=> rhs)}
+    has a weak ordering type,  the \a order argument can't have partial
+    or strong ordering types.
+    \note The macro only works if the compiler supports the \c{<=>} operator,
+    and otherwise it statically asserts that the prerequisite feature
+    isn't available. Before a macro usage always check if
+    \c __cpp_lib_three_way_comparison is defined, and use QSKIP, if it isn't.
+
+    \include qtestcase.qdoc macro-usage-limitation
+
+    \include qtestcase.qdoc to-string-overload-desc
+*/
+
 /*! \macro QVERIFY_EXCEPTION_THROWN(expression, exceptiontype)
    \since 5.3
 
diff --git a/src/testlib/qtestresult.cpp b/src/testlib/qtestresult.cpp
index a9f42cbf5e2..0ad7eee8f25 100644
--- a/src/testlib/qtestresult.cpp
+++ b/src/testlib/qtestresult.cpp
@@ -321,12 +321,38 @@ bool QTestResult::verify(bool statement, const char *statementStr,
 
 static const char *leftArgNameForOp(QTest::ComparisonOperation op)
 {
-    return op == QTest::ComparisonOperation::CustomCompare ? "Actual   " : "Computed ";
+    switch (op) {
+    case QTest::ComparisonOperation::CustomCompare:
+        return "Actual   ";
+    case QTest::ComparisonOperation::ThreeWayCompare:
+        return "Left     ";
+    case QTest::ComparisonOperation::Equal:
+    case QTest::ComparisonOperation::NotEqual:
+    case QTest::ComparisonOperation::LessThan:
+    case QTest::ComparisonOperation::LessThanOrEqual:
+    case QTest::ComparisonOperation::GreaterThan:
+    case QTest::ComparisonOperation::GreaterThanOrEqual:
+        return "Computed ";
+    }
+    Q_UNREACHABLE_RETURN("");
 }
 
 static const char *rightArgNameForOp(QTest::ComparisonOperation op)
 {
-    return op == QTest::ComparisonOperation::CustomCompare ? "Expected " : "Baseline ";
+    switch (op) {
+    case QTest::ComparisonOperation::CustomCompare:
+        return "Expected ";
+    case QTest::ComparisonOperation::ThreeWayCompare:
+        return "Right    ";
+    case QTest::ComparisonOperation::Equal:
+    case QTest::ComparisonOperation::NotEqual:
+    case QTest::ComparisonOperation::LessThan:
+    case QTest::ComparisonOperation::LessThanOrEqual:
+    case QTest::ComparisonOperation::GreaterThan:
+    case QTest::ComparisonOperation::GreaterThanOrEqual:
+        return "Baseline ";
+    }
+    Q_UNREACHABLE_RETURN("");
 }
 
 static int approx_wide_len(const char *s)
@@ -632,6 +658,8 @@ static const char *macroNameForOp(QTest::ComparisonOperation op)
         return "QCOMPARE_GT";
     case ComparisonOperation::GreaterThanOrEqual:
         return "QCOMPARE_GE";
+    case ComparisonOperation::ThreeWayCompare:
+        return "QCOMPARE_3WAY";
     }
     Q_UNREACHABLE_RETURN("");
 }
@@ -642,6 +670,8 @@ static const char *failureMessageForOp(QTest::ComparisonOperation op)
     switch (op) {
     case ComparisonOperation::CustomCompare:
         return "Compared values are not the same"; /* not used */
+    case ComparisonOperation::ThreeWayCompare:
+        return "The result of operator<=>() is not what was expected";
     case ComparisonOperation::Equal:
         return "The computed value is expected to be equal to the baseline, but is not";
     case ComparisonOperation::NotEqual:
@@ -696,4 +726,61 @@ bool QTestResult::reportResult(bool success, const void *lhs, const void *rhs,
     return checkStatement(success, msg, file, line);
 }
 
+bool QTestResult::report3WayResult(bool success,
+                                   const char *failureMessage,
+                                   const void *lhs, const void *rhs,
+                                   const char *(*lhsFormatter)(const void*),
+                                   const char *(*rhsFormatter)(const void*),
+                                   const char *lhsExpression, const char *rhsExpression,
+                                   const char *(*orderFormatter)(const void*),
+                                   const void *actualOrder, const void *expectedOrder,
+                                   const char *expectedExpression,
+                                   const char *file, int line)
+{
+    char msg[maxMsgLen];
+    msg[0] = '\0';
+
+    QTEST_ASSERT(lhsExpression);
+    QTEST_ASSERT(rhsExpression);
+    QTEST_ASSERT(expectedExpression);
+    const char *macroName = macroNameForOp(QTest::ComparisonOperation::ThreeWayCompare);
+    const std::string actualExpression = std::string(lhsExpression) + " <=> " + rhsExpression;
+
+    if (QTestLog::verboseLevel() >= 2) {
+        std::snprintf(msg, maxMsgLen, "%s(%s, %s, %s)",
+                      macroName, lhsExpression, rhsExpression, expectedExpression);
+        QTestLog::info(msg, file, line);
+    }
+
+    if (success) {
+        if (QTest::expectFailMode) {
+            std::snprintf(msg, maxMsgLen, "%s(%s, %s, %s) returned TRUE unexpectedly.",
+                          macroName, lhsExpression, rhsExpression, expectedExpression);
+        }
+        return checkStatement(success, msg, file, line);
+    }
+    const std::unique_ptr<const char[]> lhsStr{lhsFormatter(lhs)};
+    const std::unique_ptr<const char[]> rhsStr{rhsFormatter(rhs)};
+
+    const std::unique_ptr<const char[]> actual{orderFormatter(actualOrder)};
+    const std::unique_ptr<const char[]> expected{orderFormatter(expectedOrder)};
+
+    if (!failureMessage)
+        failureMessage = failureMessageForOp(QTest::ComparisonOperation::ThreeWayCompare);
+
+    // Left and Right compared parameters of QCOMPARE_3WAY
+    formatFailMessage(msg, maxMsgLen, failureMessage,
+                      lhsStr.get(), rhsStr.get(),
+                      lhsExpression, rhsExpression,
+                      QTest::ComparisonOperation::ThreeWayCompare);
+
+    // Actual and Expected results of comparison
+    formatFailMessage(msg + strlen(msg), maxMsgLen - strlen(msg), "",
+                      actual.get(), expected.get(),
+                      actualExpression.c_str(), expectedExpression,
+                      QTest::ComparisonOperation::CustomCompare);
+
+    return checkStatement(success, msg, file, line);
+}
+
 QT_END_NAMESPACE
diff --git a/src/testlib/qtestresult_p.h b/src/testlib/qtestresult_p.h
index e94de64c062..5233644c855 100644
--- a/src/testlib/qtestresult_p.h
+++ b/src/testlib/qtestresult_p.h
@@ -108,6 +108,17 @@ public:
                              QTest::ComparisonOperation op, const char *file, int line,
                              const char *failureMessage = nullptr);
 
+    static bool report3WayResult(bool success,
+                                 const char *failureMessage,
+                                 const void *lhs, const void *rhs,
+                                 const char *(*lhsFormatter)(const void *),
+                                 const char *(*rhsFormatter)(const void *),
+                                 const char *lhsExpression, const char *rhsExpression,
+                                 const char *(*orderFormatter)(const void *),
+                                 const void *actualOrder, const void *expectedOrder,
+                                 const char *expectedExpression,
+                                 const char *file, int line);
+
 private:
     Q_DISABLE_COPY(QTestResult)
 };
diff --git a/src/testlib/qttestglobal.h b/src/testlib/qttestglobal.h
index 8ede78c2a2f..a726ec8fa7e 100644
--- a/src/testlib/qttestglobal.h
+++ b/src/testlib/qttestglobal.h
@@ -31,6 +31,7 @@ namespace QTest
         LessThanOrEqual,
         GreaterThan,
         GreaterThanOrEqual,
+        ThreeWayCompare,
     };
 }
 
diff --git a/tests/auto/corelib/global/qcompare/tst_qcompare.cpp b/tests/auto/corelib/global/qcompare/tst_qcompare.cpp
index 8d764ad5257..b79a6661db3 100644
--- a/tests/auto/corelib/global/qcompare/tst_qcompare.cpp
+++ b/tests/auto/corelib/global/qcompare/tst_qcompare.cpp
@@ -11,6 +11,17 @@
 class tst_QCompare: public QObject
 {
     Q_OBJECT
+
+    enum TestEnum : int {
+        Smaller,
+        Bigger
+    };
+
+#ifdef __cpp_lib_three_way_comparison
+    template<typename LeftType, typename RightType, typename OrderingType>
+    void compare3WayHelper(LeftType lhs, RightType rhs, OrderingType order);
+#endif
+
 private slots:
     void legacyPartialOrdering();
     void legacyConversions();
@@ -23,6 +34,7 @@ private slots:
     void is_eq_overloads();
     void compareThreeWay();
     void unorderedNeqLiteralZero();
+    void compare3WayMacro();
 };
 
 void tst_QCompare::legacyPartialOrdering()
@@ -777,12 +789,7 @@ void tst_QCompare::compareThreeWay()
     static_assert(noexcept(qCompareThreeWay(std::declval<float>(), std::declval<int>())));
     static_assert(noexcept(qCompareThreeWay(std::declval<double>(), std::declval<float>())));
     static_assert(noexcept(qCompareThreeWay(std::declval<int>(), std::declval<int>())));
-
     // enums
-    enum TestEnum : int {
-        Smaller,
-        Bigger
-    };
     static_assert(noexcept(qCompareThreeWay(std::declval<TestEnum>(), std::declval<TestEnum>())));
 
     // pointers
@@ -876,5 +883,66 @@ void tst_QCompare::unorderedNeqLiteralZero()
     QVERIFY(is_neq(qtLegacyUnordered));
 }
 
+#ifdef __cpp_lib_three_way_comparison
+template<typename LeftType, typename RightType, typename OrderingType>
+void tst_QCompare::compare3WayHelper(LeftType lhs, RightType rhs, OrderingType order)
+{
+    // check Qt ordering type.
+    QCOMPARE_3WAY(lhs, rhs, QtOrderingPrivate::to_Qt(order));
+    // Also check std ordering type.
+    QCOMPARE_3WAY(lhs, rhs, QtOrderingPrivate::to_std(order));
+}
+#endif
+
+void tst_QCompare::compare3WayMacro()
+{
+#ifdef __cpp_lib_three_way_comparison
+    constexpr std::array comparison_array = {1, 0};
+    // for custom types
+    compare3WayHelper(StringWrapper("ABC"), StringWrapper("abc"),
+                      Qt::weak_ordering::equivalent);
+    compare3WayHelper(StringWrapper("ABC"), StringWrapper("qwe"),
+                      Qt::weak_ordering::less);
+    compare3WayHelper(StringWrapper("qwe"), StringWrapper("ABC"),
+                      Qt::weak_ordering::greater);
+
+    compare3WayHelper(StringWrapper("10"), 10, Qt::weak_ordering::equivalent);
+    compare3WayHelper(StringWrapper("10"), 12, Qt::weak_ordering::less);
+    compare3WayHelper(StringWrapper("12"), 10, Qt::weak_ordering::greater);
+
+    // reversed compareThreeWay()
+    compare3WayHelper(10, StringWrapper("12"), Qt::weak_ordering::less);
+    compare3WayHelper(12, StringWrapper("10"), Qt::weak_ordering::greater);
+    compare3WayHelper(10, StringWrapper("10"), Qt::weak_ordering::equivalent);
+
+    // built-in types
+    compare3WayHelper(1, 1.0, Qt::partial_ordering::equivalent);
+    compare3WayHelper(1, 2, Qt::strong_ordering::less);
+    compare3WayHelper(2.0f, 1.0, Qt::partial_ordering::greater);
+
+    // enums
+    compare3WayHelper(Smaller, Bigger, Qt::strong_ordering::less);
+
+    // pointers
+    compare3WayHelper(&comparison_array[1], &comparison_array[0], Qt::strong_ordering::greater);
+    compare3WayHelper(comparison_array.data(),
+                      &comparison_array[0], Qt::strong_ordering::equivalent);
+
+    const QString lhs = QStringLiteral("abc");
+
+    // We don't want to put those into test data since we want to specifically test comparison
+    // against inline string literals.
+    compare3WayHelper(lhs, u"", Qt::strong_ordering::greater);
+    compare3WayHelper(lhs, u"abc", Qt::strong_ordering::equal);
+    compare3WayHelper(lhs, u"abcd", Qt::strong_ordering::less);
+
+    compare3WayHelper(lhs, "", Qt::strong_ordering::greater);
+    compare3WayHelper(lhs, "abc", Qt::strong_ordering::equal);
+    compare3WayHelper(lhs, "abcd", Qt::strong_ordering::less);
+#else
+    QSKIP("This test requires C++20 comparison support enabled in the standard library");
+#endif
+}
+
 QTEST_MAIN(tst_QCompare)
 #include "tst_qcompare.moc"
diff --git a/tests/auto/testlib/selftests/CMakeLists.txt b/tests/auto/testlib/selftests/CMakeLists.txt
index 366a4404d6e..bd2d42ec7cb 100644
--- a/tests/auto/testlib/selftests/CMakeLists.txt
+++ b/tests/auto/testlib/selftests/CMakeLists.txt
@@ -112,6 +112,12 @@ set(subprograms
     watchdog
 )
 
+if(FEATURE_cxx20)
+  list(APPEND subprograms
+      threewaycompare
+  )
+endif()
+
 if(TARGET Qt::Gui)
     list(APPEND subprograms
         keyboard
diff --git a/tests/auto/testlib/selftests/expected_threewaycompare.junitxml b/tests/auto/testlib/selftests/expected_threewaycompare.junitxml
new file mode 100644
index 00000000000..e54a88f1f35
--- /dev/null
+++ b/tests/auto/testlib/selftests/expected_threewaycompare.junitxml
@@ -0,0 +1,298 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<testsuite name="tst_ThreeWayCompare" timestamp="@TEST_START_TIME@" hostname="@HOSTNAME@" tests="52" failures="34" errors="0" skipped="0" time="@TEST_DURATION@">
+  <properties>
+    <property name="QTestVersion" value="@INSERT_QT_VERSION_HERE@"/>
+    <property name="QtVersion" value="@INSERT_QT_VERSION_HERE@"/>
+    <property name="QtBuild" value=""/>
+  </properties>
+  <testcase name="initTestCase" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="compareInts(Qt::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="compareInts(Qt::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="compareInts(Qt::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="compareFloats(Qt::partial_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="compareFloats(Qt::partial_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="compareFloats(Qt::partial_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1.1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::greater
+   Expected (expectedOrder): Qt::partial_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="compareDoubles(Qt::partial_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::greater]]>
+    </failure>
+  </testcase>
+  <testcase name="compareDoubles(Qt::partial_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 0
+   Right    (rhs): 0.1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::less
+   Expected (expectedOrder): Qt::partial_ordering::greater]]>
+    </failure>
+  </testcase>
+  <testcase name="compareDoubles(Qt::partial_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="comparePointers(Qt::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="comparePointers(Qt::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="comparePointers(Qt::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="compareToNullptr(Qt::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="compareToNullptr(Qt::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="compareToNullptr(Qt::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="compareUnregisteredEnum(Qt::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="compareUnregisteredEnum(Qt::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="compareUnregisteredEnum(Qt::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="compareRegisteredEnum(Qt::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::greater]]>
+    </failure>
+  </testcase>
+  <testcase name="compareRegisteredEnum(Qt::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): Monday
+   Right    (rhs): Sunday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::greater]]>
+    </failure>
+  </testcase>
+  <testcase name="compareRegisteredEnum(Qt::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="compareCustomTypes(Qt::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="compareCustomTypes(Qt::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="compareCustomTypes(Qt::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareInts(std::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="stdCompareInts(std::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): -2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareInts(std::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): -2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareFloats(std::partial_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 2
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareFloats(std::partial_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 2
+   Right    (rhs): 1.1
+   Actual   (lhs <=> rhs)  : std::partial_ordering::greater
+   Expected (expectedOrder): std::partial_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareFloats(std::partial_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="stdCompareDoubles(std::partial_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 0.15
+   Right    (rhs): 0.15
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::greater]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareDoubles(std::partial_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 0.15
+   Right    (rhs): 0.25
+   Actual   (lhs <=> rhs)  : std::partial_ordering::less
+   Expected (expectedOrder): std::partial_ordering::greater]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareDoubles(std::partial_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="stdComparePointers(std::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="stdComparePointers(std::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="stdComparePointers(std::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareToNullptr(std::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="stdCompareToNullptr(std::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareToNullptr(std::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareUnregisteredEnum(std::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareUnregisteredEnum(std::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareUnregisteredEnum(std::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="stdCompareRegisteredEnum(std::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::greater]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareRegisteredEnum(std::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): Monday
+   Right    (rhs): Friday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::greater]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareRegisteredEnum(std::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="stdCompareCustomTypes(std::strong_ordering::equivalent)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="stdCompareCustomTypes(std::strong_ordering::less)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+  <testcase name="stdCompareCustomTypes(std::strong_ordering::greater)" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less]]>
+    </failure>
+  </testcase>
+  <testcase name="checkComparisonForTemporaryObjects" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (getClassForValue(0).getValuePointer()): MyClass(2) on memory address with index 0
+   Right    (getClassForValue(1).getValuePointer()): MyClass(1) on memory address with index 1
+   Actual   (getClassForValue(0).getValuePointer() <=> getClassForValue(1).getValuePointer()): std::strong_ordering::less
+   Expected (std::strong_ordering::equal)                                                    : std::strong_ordering::equal]]>
+    </failure>
+  </testcase>
+  <testcase name="checkWeakComparison" classname="tst_ThreeWayCompare" time="@TEST_DURATION@">
+    <failure type="fail" message="The result of operator&lt;=&gt;() is not what was expected">
+      <![CDATA[   Left     (june)     : 2012/06/20 14:33:02.500[CEST]
+   Right    (juneLater): 2012/06/20 14:33:02.501[CEST]
+   Actual   (june <=> juneLater)        : Qt::weak_ordering::less
+   Expected (Qt::weak_ordering::greater): Qt::weak_ordering::greater]]>
+    </failure>
+  </testcase>
+  <testcase name="cleanupTestCase" classname="tst_ThreeWayCompare" time="@TEST_DURATION@"/>
+</testsuite>
diff --git a/tests/auto/testlib/selftests/expected_threewaycompare.lightxml b/tests/auto/testlib/selftests/expected_threewaycompare.lightxml
new file mode 100644
index 00000000000..0c3a45bd645
--- /dev/null
+++ b/tests/auto/testlib/selftests/expected_threewaycompare.lightxml
@@ -0,0 +1,386 @@
+  <Environment>
+    <QtVersion>@INSERT_QT_VERSION_HERE@</QtVersion>
+    <QtBuild/>
+    <QTestVersion>@INSERT_QT_VERSION_HERE@</QTestVersion>
+  </Environment>
+  <TestFunction name="initTestCase">
+    <Incident type="pass" file="" line="0" />
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareInts">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareFloats">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::less]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1.1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::greater
+   Expected (expectedOrder): Qt::partial_ordering::less]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareDoubles">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0.1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::less
+   Expected (expectedOrder): Qt::partial_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="comparePointers">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareToNullptr">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareUnregisteredEnum">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareRegisteredEnum">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Sunday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareCustomTypes">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareInts">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): -2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): -2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareFloats">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::partial_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::less]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::partial_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1.1
+   Actual   (lhs <=> rhs)  : std::partial_ordering::greater
+   Expected (expectedOrder): std::partial_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::partial_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareDoubles">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::partial_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0.15
+   Right    (rhs): 0.15
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::partial_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0.15
+   Right    (rhs): 0.25
+   Actual   (lhs <=> rhs)  : std::partial_ordering::less
+   Expected (expectedOrder): std::partial_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::partial_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdComparePointers">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareToNullptr">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareUnregisteredEnum">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareRegisteredEnum">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Friday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareCustomTypes">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="checkComparisonForTemporaryObjects">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (getClassForValue(0).getValuePointer()): MyClass(2) on memory address with index 0
+   Right    (getClassForValue(1).getValuePointer()): MyClass(1) on memory address with index 1
+   Actual   (getClassForValue(0).getValuePointer() <=> getClassForValue(1).getValuePointer()): std::strong_ordering::less
+   Expected (std::strong_ordering::equal)                                                    : std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="checkWeakComparison">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (june)     : 2012/06/20 14:33:02.500[CEST]
+   Right    (juneLater): 2012/06/20 14:33:02.501[CEST]
+   Actual   (june <=> juneLater)        : Qt::weak_ordering::less
+   Expected (Qt::weak_ordering::greater): Qt::weak_ordering::greater]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="cleanupTestCase">
+    <Incident type="pass" file="" line="0" />
+    <Duration msecs="0"/>
+  </TestFunction>
+  <Duration msecs="0"/>
diff --git a/tests/auto/testlib/selftests/expected_threewaycompare.tap b/tests/auto/testlib/selftests/expected_threewaycompare.tap
new file mode 100644
index 00000000000..d05bbe8bd16
--- /dev/null
+++ b/tests/auto/testlib/selftests/expected_threewaycompare.tap
@@ -0,0 +1,398 @@
+TAP version 13
+# tst_ThreeWayCompare
+ok 1 - initTestCase()
+ok 2 - compareInts(Qt::strong_ordering::equivalent)
+not ok 3 - compareInts(Qt::strong_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal
+  at: tst_ThreeWayCompare::compareInts() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 4 - compareInts(Qt::strong_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal
+  at: tst_ThreeWayCompare::compareInts() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 5 - compareFloats(Qt::partial_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::less
+  at: tst_ThreeWayCompare::compareFloats() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 6 - compareFloats(Qt::partial_ordering::less)
+not ok 7 - compareFloats(Qt::partial_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1.1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::greater
+   Expected (expectedOrder): Qt::partial_ordering::less
+  at: tst_ThreeWayCompare::compareFloats() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 8 - compareDoubles(Qt::partial_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::greater
+  at: tst_ThreeWayCompare::compareDoubles() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 9 - compareDoubles(Qt::partial_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0.1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::less
+   Expected (expectedOrder): Qt::partial_ordering::greater
+  at: tst_ThreeWayCompare::compareDoubles() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 10 - compareDoubles(Qt::partial_ordering::greater)
+ok 11 - comparePointers(Qt::strong_ordering::equivalent)
+not ok 12 - comparePointers(Qt::strong_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal
+  at: tst_ThreeWayCompare::comparePointers() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 13 - comparePointers(Qt::strong_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal
+  at: tst_ThreeWayCompare::comparePointers() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 14 - compareToNullptr(Qt::strong_ordering::equivalent)
+not ok 15 - compareToNullptr(Qt::strong_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal
+  at: tst_ThreeWayCompare::compareToNullptr() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 16 - compareToNullptr(Qt::strong_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal
+  at: tst_ThreeWayCompare::compareToNullptr() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 17 - compareUnregisteredEnum(Qt::strong_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less
+  at: tst_ThreeWayCompare::compareUnregisteredEnum() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 18 - compareUnregisteredEnum(Qt::strong_ordering::less)
+not ok 19 - compareUnregisteredEnum(Qt::strong_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less
+  at: tst_ThreeWayCompare::compareUnregisteredEnum() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 20 - compareRegisteredEnum(Qt::strong_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::greater
+  at: tst_ThreeWayCompare::compareRegisteredEnum() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 21 - compareRegisteredEnum(Qt::strong_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Sunday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::greater
+  at: tst_ThreeWayCompare::compareRegisteredEnum() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 22 - compareRegisteredEnum(Qt::strong_ordering::greater)
+not ok 23 - compareCustomTypes(Qt::strong_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less
+  at: tst_ThreeWayCompare::compareCustomTypes() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 24 - compareCustomTypes(Qt::strong_ordering::less)
+not ok 25 - compareCustomTypes(Qt::strong_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less
+  at: tst_ThreeWayCompare::compareCustomTypes() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 26 - stdCompareInts(std::strong_ordering::equivalent)
+not ok 27 - stdCompareInts(std::strong_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): -2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal
+  at: tst_ThreeWayCompare::stdCompareInts() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 28 - stdCompareInts(std::strong_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): -2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal
+  at: tst_ThreeWayCompare::stdCompareInts() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 29 - stdCompareFloats(std::partial_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::less
+  at: tst_ThreeWayCompare::stdCompareFloats() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 30 - stdCompareFloats(std::partial_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1.1
+   Actual   (lhs <=> rhs)  : std::partial_ordering::greater
+   Expected (expectedOrder): std::partial_ordering::less
+  at: tst_ThreeWayCompare::stdCompareFloats() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 31 - stdCompareFloats(std::partial_ordering::greater)
+not ok 32 - stdCompareDoubles(std::partial_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 0.15
+   Right    (rhs): 0.15
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::greater
+  at: tst_ThreeWayCompare::stdCompareDoubles() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 33 - stdCompareDoubles(std::partial_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 0.15
+   Right    (rhs): 0.25
+   Actual   (lhs <=> rhs)  : std::partial_ordering::less
+   Expected (expectedOrder): std::partial_ordering::greater
+  at: tst_ThreeWayCompare::stdCompareDoubles() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 34 - stdCompareDoubles(std::partial_ordering::greater)
+ok 35 - stdComparePointers(std::strong_ordering::equivalent)
+not ok 36 - stdComparePointers(std::strong_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal
+  at: tst_ThreeWayCompare::stdComparePointers() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 37 - stdComparePointers(std::strong_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal
+  at: tst_ThreeWayCompare::stdComparePointers() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 38 - stdCompareToNullptr(std::strong_ordering::equivalent)
+not ok 39 - stdCompareToNullptr(std::strong_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal
+  at: tst_ThreeWayCompare::stdCompareToNullptr() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 40 - stdCompareToNullptr(std::strong_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal
+  at: tst_ThreeWayCompare::stdCompareToNullptr() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 41 - stdCompareUnregisteredEnum(std::strong_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less
+  at: tst_ThreeWayCompare::stdCompareUnregisteredEnum() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 42 - stdCompareUnregisteredEnum(std::strong_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less
+  at: tst_ThreeWayCompare::stdCompareUnregisteredEnum() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 43 - stdCompareUnregisteredEnum(std::strong_ordering::greater)
+not ok 44 - stdCompareRegisteredEnum(std::strong_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::greater
+  at: tst_ThreeWayCompare::stdCompareRegisteredEnum() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 45 - stdCompareRegisteredEnum(std::strong_ordering::less)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Friday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::greater
+  at: tst_ThreeWayCompare::stdCompareRegisteredEnum() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 46 - stdCompareRegisteredEnum(std::strong_ordering::greater)
+not ok 47 - stdCompareCustomTypes(std::strong_ordering::equivalent)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less
+  at: tst_ThreeWayCompare::stdCompareCustomTypes() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 48 - stdCompareCustomTypes(std::strong_ordering::less)
+not ok 49 - stdCompareCustomTypes(std::strong_ordering::greater)
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less
+  at: tst_ThreeWayCompare::stdCompareCustomTypes() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 50 - checkComparisonForTemporaryObjects()
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (getClassForValue(0).getValuePointer()): MyClass(2) on memory address with index 0
+   Right    (getClassForValue(1).getValuePointer()): MyClass(1) on memory address with index 1
+   Actual   (getClassForValue(0).getValuePointer() <=> getClassForValue(1).getValuePointer()): std::strong_ordering::less
+   Expected (std::strong_ordering::equal)                                                    : std::strong_ordering::equal
+  at: tst_ThreeWayCompare::checkComparisonForTemporaryObjects() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+not ok 51 - checkWeakComparison()
+  ---
+  # The result of operator<=>() is not what was expected
+   Left     (june)     : 2012/06/20 14:33:02.500[CEST]
+   Right    (juneLater): 2012/06/20 14:33:02.501[CEST]
+   Actual   (june <=> juneLater)        : Qt::weak_ordering::less
+   Expected (Qt::weak_ordering::greater): Qt::weak_ordering::greater
+  at: tst_ThreeWayCompare::checkWeakComparison() (qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp:0)
+  file: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
+  line: 0
+  ...
+ok 52 - cleanupTestCase()
+1..52
+# tests 52
+# pass 18
+# fail 34
diff --git a/tests/auto/testlib/selftests/expected_threewaycompare.teamcity b/tests/auto/testlib/selftests/expected_threewaycompare.teamcity
new file mode 100644
index 00000000000..07c815fa008
--- /dev/null
+++ b/tests/auto/testlib/selftests/expected_threewaycompare.teamcity
@@ -0,0 +1,140 @@
+##teamcity[testSuiteStarted name='tst_ThreeWayCompare' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='initTestCase()' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='initTestCase()' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareInts(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareInts(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareInts(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareInts(Qt::strong_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): 2|n Actual (lhs <=> rhs) : Qt::strong_ordering::less|n Expected (expectedOrder): Qt::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareInts(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareInts(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareInts(Qt::strong_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 2|n Right (rhs): 1|n Actual (lhs <=> rhs) : Qt::strong_ordering::greater|n Expected (expectedOrder): Qt::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareInts(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareFloats(Qt::partial_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareFloats(Qt::partial_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): 1|n Actual (lhs <=> rhs) : Qt::partial_ordering::equivalent|n Expected (expectedOrder): Qt::partial_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareFloats(Qt::partial_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareFloats(Qt::partial_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareFloats(Qt::partial_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareFloats(Qt::partial_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareFloats(Qt::partial_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1.1|n Right (rhs): 1|n Actual (lhs <=> rhs) : Qt::partial_ordering::greater|n Expected (expectedOrder): Qt::partial_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareFloats(Qt::partial_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareDoubles(Qt::partial_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareDoubles(Qt::partial_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 0|n Right (rhs): 0|n Actual (lhs <=> rhs) : Qt::partial_ordering::equivalent|n Expected (expectedOrder): Qt::partial_ordering::greater' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareDoubles(Qt::partial_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareDoubles(Qt::partial_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareDoubles(Qt::partial_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 0|n Right (rhs): 0.1|n Actual (lhs <=> rhs) : Qt::partial_ordering::less|n Expected (expectedOrder): Qt::partial_ordering::greater' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareDoubles(Qt::partial_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareDoubles(Qt::partial_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareDoubles(Qt::partial_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='comparePointers(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='comparePointers(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='comparePointers(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='comparePointers(Qt::strong_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): 2|n Actual (lhs <=> rhs) : Qt::strong_ordering::less|n Expected (expectedOrder): Qt::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='comparePointers(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='comparePointers(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='comparePointers(Qt::strong_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 2|n Right (rhs): 1|n Actual (lhs <=> rhs) : Qt::strong_ordering::greater|n Expected (expectedOrder): Qt::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='comparePointers(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareToNullptr(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareToNullptr(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareToNullptr(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareToNullptr(Qt::strong_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): "nullptr"|n Right (rhs): 1|n Actual (lhs <=> rhs) : Qt::strong_ordering::less|n Expected (expectedOrder): Qt::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareToNullptr(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareToNullptr(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareToNullptr(Qt::strong_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): "nullptr"|n Actual (lhs <=> rhs) : Qt::strong_ordering::greater|n Expected (expectedOrder): Qt::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareToNullptr(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareUnregisteredEnum(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareUnregisteredEnum(Qt::strong_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 0|n Right (rhs): 0|n Actual (lhs <=> rhs) : Qt::strong_ordering::equal|n Expected (expectedOrder): Qt::strong_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareUnregisteredEnum(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareUnregisteredEnum(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareUnregisteredEnum(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareUnregisteredEnum(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareUnregisteredEnum(Qt::strong_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): 0|n Actual (lhs <=> rhs) : Qt::strong_ordering::greater|n Expected (expectedOrder): Qt::strong_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareUnregisteredEnum(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareRegisteredEnum(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareRegisteredEnum(Qt::strong_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): Monday|n Right (rhs): Monday|n Actual (lhs <=> rhs) : Qt::strong_ordering::equal|n Expected (expectedOrder): Qt::strong_ordering::greater' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareRegisteredEnum(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareRegisteredEnum(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareRegisteredEnum(Qt::strong_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): Monday|n Right (rhs): Sunday|n Actual (lhs <=> rhs) : Qt::strong_ordering::less|n Expected (expectedOrder): Qt::strong_ordering::greater' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareRegisteredEnum(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareRegisteredEnum(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareRegisteredEnum(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareCustomTypes(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareCustomTypes(Qt::strong_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): MyClass(1)|n Right (rhs): MyClass(1)|n Actual (lhs <=> rhs) : Qt::strong_ordering::equal|n Expected (expectedOrder): Qt::strong_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareCustomTypes(Qt::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareCustomTypes(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareCustomTypes(Qt::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='compareCustomTypes(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='compareCustomTypes(Qt::strong_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): MyClass(2)|n Right (rhs): MyClass(1)|n Actual (lhs <=> rhs) : Qt::strong_ordering::greater|n Expected (expectedOrder): Qt::strong_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='compareCustomTypes(Qt::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareInts(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareInts(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareInts(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareInts(std::strong_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): -2|n Actual (lhs <=> rhs) : std::strong_ordering::greater|n Expected (expectedOrder): std::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareInts(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareInts(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareInts(std::strong_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): -2|n Right (rhs): 1|n Actual (lhs <=> rhs) : std::strong_ordering::less|n Expected (expectedOrder): std::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareInts(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareFloats(std::partial_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareFloats(std::partial_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 2|n Right (rhs): 2|n Actual (lhs <=> rhs) : std::partial_ordering::equivalent|n Expected (expectedOrder): std::partial_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareFloats(std::partial_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareFloats(std::partial_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareFloats(std::partial_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 2|n Right (rhs): 1.1|n Actual (lhs <=> rhs) : std::partial_ordering::greater|n Expected (expectedOrder): std::partial_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareFloats(std::partial_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareFloats(std::partial_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareFloats(std::partial_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareDoubles(std::partial_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareDoubles(std::partial_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 0.15|n Right (rhs): 0.15|n Actual (lhs <=> rhs) : std::partial_ordering::equivalent|n Expected (expectedOrder): std::partial_ordering::greater' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareDoubles(std::partial_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareDoubles(std::partial_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareDoubles(std::partial_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 0.15|n Right (rhs): 0.25|n Actual (lhs <=> rhs) : std::partial_ordering::less|n Expected (expectedOrder): std::partial_ordering::greater' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareDoubles(std::partial_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareDoubles(std::partial_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareDoubles(std::partial_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdComparePointers(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdComparePointers(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdComparePointers(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdComparePointers(std::strong_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): 2|n Actual (lhs <=> rhs) : std::strong_ordering::less|n Expected (expectedOrder): std::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdComparePointers(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdComparePointers(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdComparePointers(std::strong_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 2|n Right (rhs): 1|n Actual (lhs <=> rhs) : std::strong_ordering::greater|n Expected (expectedOrder): std::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdComparePointers(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareToNullptr(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareToNullptr(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareToNullptr(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareToNullptr(std::strong_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): "nullptr"|n Right (rhs): 1|n Actual (lhs <=> rhs) : std::strong_ordering::less|n Expected (expectedOrder): std::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareToNullptr(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareToNullptr(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareToNullptr(std::strong_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): "nullptr"|n Actual (lhs <=> rhs) : std::strong_ordering::greater|n Expected (expectedOrder): std::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareToNullptr(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareUnregisteredEnum(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareUnregisteredEnum(std::strong_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): 1|n Actual (lhs <=> rhs) : std::strong_ordering::equal|n Expected (expectedOrder): std::strong_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareUnregisteredEnum(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareUnregisteredEnum(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareUnregisteredEnum(std::strong_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): 1|n Right (rhs): 0|n Actual (lhs <=> rhs) : std::strong_ordering::greater|n Expected (expectedOrder): std::strong_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareUnregisteredEnum(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareUnregisteredEnum(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareUnregisteredEnum(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareRegisteredEnum(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareRegisteredEnum(std::strong_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): Monday|n Right (rhs): Monday|n Actual (lhs <=> rhs) : std::strong_ordering::equal|n Expected (expectedOrder): std::strong_ordering::greater' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareRegisteredEnum(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareRegisteredEnum(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareRegisteredEnum(std::strong_ordering::less)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): Monday|n Right (rhs): Friday|n Actual (lhs <=> rhs) : std::strong_ordering::less|n Expected (expectedOrder): std::strong_ordering::greater' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareRegisteredEnum(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareRegisteredEnum(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareRegisteredEnum(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareCustomTypes(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareCustomTypes(std::strong_ordering::equivalent)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): MyClass(1)|n Right (rhs): MyClass(1)|n Actual (lhs <=> rhs) : std::strong_ordering::equal|n Expected (expectedOrder): std::strong_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareCustomTypes(std::strong_ordering::equivalent)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareCustomTypes(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareCustomTypes(std::strong_ordering::less)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='stdCompareCustomTypes(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='stdCompareCustomTypes(std::strong_ordering::greater)' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (lhs): MyClass(2)|n Right (rhs): MyClass(1)|n Actual (lhs <=> rhs) : std::strong_ordering::greater|n Expected (expectedOrder): std::strong_ordering::less' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='stdCompareCustomTypes(std::strong_ordering::greater)' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='checkComparisonForTemporaryObjects()' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='checkComparisonForTemporaryObjects()' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (getClassForValue(0).getValuePointer()): MyClass(2) on memory address with index 0|n Right (getClassForValue(1).getValuePointer()): MyClass(1) on memory address with index 1|n Actual (getClassForValue(0).getValuePointer() <=> getClassForValue(1).getValuePointer()): std::strong_ordering::less|n Expected (std::strong_ordering::equal) : std::strong_ordering::equal' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='checkComparisonForTemporaryObjects()' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='checkWeakComparison()' flowId='tst_ThreeWayCompare']
+##teamcity[testFailed name='checkWeakComparison()' message='Failure! |[Loc: qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)|]' details='The result of operator<=>() is not what was expected|n Left (june) : 2012/06/20 14:33:02.500|[CEST|]|n Right (juneLater): 2012/06/20 14:33:02.501|[CEST|]|n Actual (june <=> juneLater) : Qt::weak_ordering::less|n Expected (Qt::weak_ordering::greater): Qt::weak_ordering::greater' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='checkWeakComparison()' flowId='tst_ThreeWayCompare']
+##teamcity[testStarted name='cleanupTestCase()' flowId='tst_ThreeWayCompare']
+##teamcity[testFinished name='cleanupTestCase()' flowId='tst_ThreeWayCompare']
+##teamcity[testSuiteFinished name='tst_ThreeWayCompare' flowId='tst_ThreeWayCompare']
diff --git a/tests/auto/testlib/selftests/expected_threewaycompare.txt b/tests/auto/testlib/selftests/expected_threewaycompare.txt
new file mode 100644
index 00000000000..728c85c9201
--- /dev/null
+++ b/tests/auto/testlib/selftests/expected_threewaycompare.txt
@@ -0,0 +1,226 @@
+********* Start testing of tst_ThreeWayCompare *********
+Config: Using QtTest library
+PASS   : tst_ThreeWayCompare::initTestCase()
+PASS   : tst_ThreeWayCompare::compareInts(Qt::strong_ordering::equivalent)
+FAIL!  : tst_ThreeWayCompare::compareInts(Qt::strong_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::compareInts(Qt::strong_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::compareFloats(Qt::partial_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::compareFloats(Qt::partial_ordering::less)
+FAIL!  : tst_ThreeWayCompare::compareFloats(Qt::partial_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): 1.1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::greater
+   Expected (expectedOrder): Qt::partial_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::compareDoubles(Qt::partial_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::greater
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::compareDoubles(Qt::partial_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0.1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::less
+   Expected (expectedOrder): Qt::partial_ordering::greater
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::compareDoubles(Qt::partial_ordering::greater)
+PASS   : tst_ThreeWayCompare::comparePointers(Qt::strong_ordering::equivalent)
+FAIL!  : tst_ThreeWayCompare::comparePointers(Qt::strong_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::comparePointers(Qt::strong_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::compareToNullptr(Qt::strong_ordering::equivalent)
+FAIL!  : tst_ThreeWayCompare::compareToNullptr(Qt::strong_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::compareToNullptr(Qt::strong_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::compareUnregisteredEnum(Qt::strong_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::compareUnregisteredEnum(Qt::strong_ordering::less)
+FAIL!  : tst_ThreeWayCompare::compareUnregisteredEnum(Qt::strong_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::compareRegisteredEnum(Qt::strong_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::greater
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::compareRegisteredEnum(Qt::strong_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Sunday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::greater
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::compareRegisteredEnum(Qt::strong_ordering::greater)
+FAIL!  : tst_ThreeWayCompare::compareCustomTypes(Qt::strong_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::compareCustomTypes(Qt::strong_ordering::less)
+FAIL!  : tst_ThreeWayCompare::compareCustomTypes(Qt::strong_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::stdCompareInts(std::strong_ordering::equivalent)
+FAIL!  : tst_ThreeWayCompare::stdCompareInts(std::strong_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): -2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::stdCompareInts(std::strong_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): -2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::stdCompareFloats(std::partial_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::stdCompareFloats(std::partial_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1.1
+   Actual   (lhs <=> rhs)  : std::partial_ordering::greater
+   Expected (expectedOrder): std::partial_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::stdCompareFloats(std::partial_ordering::greater)
+FAIL!  : tst_ThreeWayCompare::stdCompareDoubles(std::partial_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): 0.15
+   Right    (rhs): 0.15
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::greater
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::stdCompareDoubles(std::partial_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): 0.15
+   Right    (rhs): 0.25
+   Actual   (lhs <=> rhs)  : std::partial_ordering::less
+   Expected (expectedOrder): std::partial_ordering::greater
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::stdCompareDoubles(std::partial_ordering::greater)
+PASS   : tst_ThreeWayCompare::stdComparePointers(std::strong_ordering::equivalent)
+FAIL!  : tst_ThreeWayCompare::stdComparePointers(std::strong_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::stdComparePointers(std::strong_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::stdCompareToNullptr(std::strong_ordering::equivalent)
+FAIL!  : tst_ThreeWayCompare::stdCompareToNullptr(std::strong_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::stdCompareToNullptr(std::strong_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::stdCompareUnregisteredEnum(std::strong_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::stdCompareUnregisteredEnum(std::strong_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::stdCompareUnregisteredEnum(std::strong_ordering::greater)
+FAIL!  : tst_ThreeWayCompare::stdCompareRegisteredEnum(std::strong_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::greater
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::stdCompareRegisteredEnum(std::strong_ordering::less) The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Friday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::greater
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::stdCompareRegisteredEnum(std::strong_ordering::greater)
+FAIL!  : tst_ThreeWayCompare::stdCompareCustomTypes(std::strong_ordering::equivalent) The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::stdCompareCustomTypes(std::strong_ordering::less)
+FAIL!  : tst_ThreeWayCompare::stdCompareCustomTypes(std::strong_ordering::greater) The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::checkComparisonForTemporaryObjects() The result of operator<=>() is not what was expected
+   Left     (getClassForValue(0).getValuePointer()): MyClass(2) on memory address with index 0
+   Right    (getClassForValue(1).getValuePointer()): MyClass(1) on memory address with index 1
+   Actual   (getClassForValue(0).getValuePointer() <=> getClassForValue(1).getValuePointer()): std::strong_ordering::less
+   Expected (std::strong_ordering::equal)                                                    : std::strong_ordering::equal
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+FAIL!  : tst_ThreeWayCompare::checkWeakComparison() The result of operator<=>() is not what was expected
+   Left     (june)     : 2012/06/20 14:33:02.500[CEST]
+   Right    (juneLater): 2012/06/20 14:33:02.501[CEST]
+   Actual   (june <=> juneLater)        : Qt::weak_ordering::less
+   Expected (Qt::weak_ordering::greater): Qt::weak_ordering::greater
+   Loc: [qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp(0)]
+PASS   : tst_ThreeWayCompare::cleanupTestCase()
+Totals: 18 passed, 34 failed, 0 skipped, 0 blacklisted, 0ms
+********* Finished testing of tst_ThreeWayCompare *********
diff --git a/tests/auto/testlib/selftests/expected_threewaycompare.xml b/tests/auto/testlib/selftests/expected_threewaycompare.xml
new file mode 100644
index 00000000000..9bd8c191ca8
--- /dev/null
+++ b/tests/auto/testlib/selftests/expected_threewaycompare.xml
@@ -0,0 +1,389 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<TestCase name="tst_ThreeWayCompare">
+  <Environment>
+    <QtVersion>@INSERT_QT_VERSION_HERE@</QtVersion>
+    <QtBuild/>
+    <QTestVersion>@INSERT_QT_VERSION_HERE@</QTestVersion>
+  </Environment>
+  <TestFunction name="initTestCase">
+    <Incident type="pass" file="" line="0" />
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareInts">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareFloats">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::less]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1.1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::greater
+   Expected (expectedOrder): Qt::partial_ordering::less]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareDoubles">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::equivalent
+   Expected (expectedOrder): Qt::partial_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0.1
+   Actual   (lhs <=> rhs)  : Qt::partial_ordering::less
+   Expected (expectedOrder): Qt::partial_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::partial_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="comparePointers">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareToNullptr">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareUnregisteredEnum">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareRegisteredEnum">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Sunday
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::less
+   Expected (expectedOrder): Qt::strong_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="compareCustomTypes">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::equal
+   Expected (expectedOrder): Qt::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::less]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[Qt::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : Qt::strong_ordering::greater
+   Expected (expectedOrder): Qt::strong_ordering::less]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareInts">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): -2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): -2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareFloats">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::partial_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::less]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::partial_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1.1
+   Actual   (lhs <=> rhs)  : std::partial_ordering::greater
+   Expected (expectedOrder): std::partial_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::partial_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareDoubles">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::partial_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0.15
+   Right    (rhs): 0.15
+   Actual   (lhs <=> rhs)  : std::partial_ordering::equivalent
+   Expected (expectedOrder): std::partial_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::partial_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 0.15
+   Right    (rhs): 0.25
+   Actual   (lhs <=> rhs)  : std::partial_ordering::less
+   Expected (expectedOrder): std::partial_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::partial_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdComparePointers">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 2
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 2
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareToNullptr">
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): "nullptr"
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): "nullptr"
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareUnregisteredEnum">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 1
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): 1
+   Right    (rhs): 0
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareRegisteredEnum">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Monday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): Monday
+   Right    (rhs): Friday
+   Actual   (lhs <=> rhs)  : std::strong_ordering::less
+   Expected (expectedOrder): std::strong_ordering::greater]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="stdCompareCustomTypes">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::equivalent]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(1)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::equal
+   Expected (expectedOrder): std::strong_ordering::less]]></Description>
+    </Incident>
+    <Incident type="pass" file="" line="0">
+      <DataTag><![CDATA[std::strong_ordering::less]]></DataTag>
+    </Incident>
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <DataTag><![CDATA[std::strong_ordering::greater]]></DataTag>
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (lhs): MyClass(2)
+   Right    (rhs): MyClass(1)
+   Actual   (lhs <=> rhs)  : std::strong_ordering::greater
+   Expected (expectedOrder): std::strong_ordering::less]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="checkComparisonForTemporaryObjects">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (getClassForValue(0).getValuePointer()): MyClass(2) on memory address with index 0
+   Right    (getClassForValue(1).getValuePointer()): MyClass(1) on memory address with index 1
+   Actual   (getClassForValue(0).getValuePointer() <=> getClassForValue(1).getValuePointer()): std::strong_ordering::less
+   Expected (std::strong_ordering::equal)                                                    : std::strong_ordering::equal]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="checkWeakComparison">
+    <Incident type="fail" file="qtbase/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp" line="0">
+      <Description><![CDATA[The result of operator<=>() is not what was expected
+   Left     (june)     : 2012/06/20 14:33:02.500[CEST]
+   Right    (juneLater): 2012/06/20 14:33:02.501[CEST]
+   Actual   (june <=> juneLater)        : Qt::weak_ordering::less
+   Expected (Qt::weak_ordering::greater): Qt::weak_ordering::greater]]></Description>
+    </Incident>
+    <Duration msecs="0"/>
+  </TestFunction>
+  <TestFunction name="cleanupTestCase">
+    <Incident type="pass" file="" line="0" />
+    <Duration msecs="0"/>
+  </TestFunction>
+  <Duration msecs="0"/>
+</TestCase>
diff --git a/tests/auto/testlib/selftests/extendedcompare/tst_extendedcompare.cpp b/tests/auto/testlib/selftests/extendedcompare/tst_extendedcompare.cpp
index 5a5fcdfa13b..07fd78ae293 100644
--- a/tests/auto/testlib/selftests/extendedcompare/tst_extendedcompare.cpp
+++ b/tests/auto/testlib/selftests/extendedcompare/tst_extendedcompare.cpp
@@ -17,6 +17,7 @@ switch (Type) { \
     case QTest::ComparisonOperation::LessThanOrEqual:    QCOMPARE_LE(arg1, arg2); break; \
     case QTest::ComparisonOperation::GreaterThan:        QCOMPARE_GT(arg1, arg2); break; \
     case QTest::ComparisonOperation::GreaterThanOrEqual: QCOMPARE_GE(arg1, arg2); break; \
+    case QTest::ComparisonOperation::ThreeWayCompare:    break; \
 }
 
 class MyClass
@@ -186,6 +187,7 @@ template <typename T> static void executeComparison()
     case QTest::ComparisonOperation::LessThanOrEqual:    QCOMPARE_LE(lhs, rhs); break;
     case QTest::ComparisonOperation::GreaterThan:        QCOMPARE_GT(lhs, rhs); break;
     case QTest::ComparisonOperation::GreaterThanOrEqual: QCOMPARE_GE(lhs, rhs); break;
+    case QTest::ComparisonOperation::ThreeWayCompare:    break;
     }
 }
 
@@ -329,6 +331,7 @@ void tst_ExtendedCompare::checkComparisonWithTimeout()
     case QTest::ComparisonOperation::CustomCompare:
         QFAIL("Unexpected comparison operation");
         break;
+    case QTest::ComparisonOperation::ThreeWayCompare: break;
     }
 }
 
diff --git a/tests/auto/testlib/selftests/generate_expected_output.py b/tests/auto/testlib/selftests/generate_expected_output.py
index 350d20fa271..9f7bca678fe 100755
--- a/tests/auto/testlib/selftests/generate_expected_output.py
+++ b/tests/auto/testlib/selftests/generate_expected_output.py
@@ -39,7 +39,13 @@ TESTS = ['assert', 'badxml', 'benchlibcallgrind', 'benchlibcounting',
          'printdatatags', 'printdatatagswithglobaltags', 'qexecstringlist',
          'signaldumper', 'silent', 'silent_fatal', 'singleskip', 'skip',
          'skipblacklisted', 'skipcleanup', 'skipcleanuptestcase', 'skipinit',
-         'skipinitdata', 'sleep', 'strcmp', 'subtest', 'testlib', 'tuplediagnostics',
+         'skipinitdata',
+         'sleep',
+         'strcmp',
+         'subtest',
+         'testlib',
+         'threewaycompare',
+         'tuplediagnostics',
          'verbose1', 'verbose2', 'verifyexceptionthrown', 'warnings', 'watchdog',
          'junit', 'keyboard']
 
diff --git a/tests/auto/testlib/selftests/threewaycompare/CMakeLists.txt b/tests/auto/testlib/selftests/threewaycompare/CMakeLists.txt
new file mode 100644
index 00000000000..f5346ab8400
--- /dev/null
+++ b/tests/auto/testlib/selftests/threewaycompare/CMakeLists.txt
@@ -0,0 +1,14 @@
+# Copyright (C) 2024 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+qt_internal_add_executable(threewaycompare
+    NO_INSTALL
+    EXCEPTIONS
+    OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    SOURCES
+        tst_threewaycompare.cpp
+    LIBRARIES
+        Qt::Test
+)
+
+qt_internal_apply_testlib_coverage_options(threewaycompare)
diff --git a/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp b/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
new file mode 100644
index 00000000000..bcc544d33a1
--- /dev/null
+++ b/tests/auto/testlib/selftests/threewaycompare/tst_threewaycompare.cpp
@@ -0,0 +1,243 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include <QTest>
+#include <QtCore/qcompare.h>
+#include <QtCore/qdatetime.h>
+#include <QtCore/qurl.h>
+
+QT_BEGIN_NAMESPACE
+
+class MyClass
+{
+public:
+    MyClass(int v) : m_value(v) {}
+    int value() const { return m_value; }
+    void setValue(int v) { m_value = v; }
+
+    friend bool comparesEqual(const MyClass &lhs, const MyClass &rhs) noexcept
+    {
+        return lhs.m_value == rhs.m_value;
+    }
+    friend Qt::strong_ordering compareThreeWay(const MyClass &lhs,
+                                               const MyClass &rhs) noexcept
+    {
+        return Qt::compareThreeWay(lhs.m_value, rhs.m_value);
+    }
+    Q_DECLARE_STRONGLY_ORDERED(MyClass);
+private:
+    int m_value;
+};
+static MyClass arrayOfMyClassValues[] = { MyClass(-1), MyClass(-1) };
+
+class ClassWithPointerGetter
+{
+    Q_DISABLE_COPY_MOVE(ClassWithPointerGetter)
+public:
+    explicit ClassWithPointerGetter(int index) : m_index(index)
+    {
+        Q_ASSERT(m_index >= 0 && m_index < 2);
+        arrayOfMyClassValues[m_index].setValue(indexToValue(m_index));
+    }
+    ~ClassWithPointerGetter()
+    {
+        arrayOfMyClassValues[m_index].setValue(-1);
+    }
+
+    const MyClass *getValuePointer() const { return &arrayOfMyClassValues[m_index]; }
+
+    static int indexToValue(int index) { return 2 - index; }
+    static int valueToIndex(int value) { return 2 - value; }
+
+private:
+    int m_index;
+};
+
+#ifdef __cpp_lib_three_way_comparison
+// An auxiliary function to get a temporary object
+static ClassWithPointerGetter getClassForValue(int val)
+{
+    return ClassWithPointerGetter(val);
+}
+#endif
+
+// various toString() overloads
+namespace QTest {
+
+template <> char *toString(const int *const &val)
+{
+    return val ? toString(*val) : toString(nullptr);
+}
+
+} // namespace QTest
+
+char *toString(const MyClass &val)
+{
+    char *msg = new char[128];
+    std::snprintf(msg, 128, "MyClass(%d)", val.value());
+    return msg;
+}
+
+char *toString(const MyClass *val)
+{
+    if (val) {
+        char *msg = new char[128];
+        const auto value = val->value();
+        std::snprintf(msg, 128, "MyClass(%d) on memory address with index %d", value,
+                      ClassWithPointerGetter::valueToIndex(value));
+        return msg;
+    }
+    return toString(nullptr);
+}
+
+enum MyUnregisteredEnum { MyUnregisteredEnumValue1, MyUnregisteredEnumValue2 };
+
+namespace {
+static constexpr int values[] = { 1, 2 };
+static const MyClass val1(1);
+static const MyClass val2(2);
+static const int *ptr = nullptr;
+static const int value = 1;
+}
+
+class tst_ThreeWayCompare : public QObject
+{
+    Q_OBJECT
+
+private:
+    template <typename T, typename OrderingType>
+    void generateData(T val1, T val2, OrderingType order);
+    template <typename T, typename OrderingType> void executeComparison();
+
+private slots:
+    void compareInts_data() { generateData(1, 2, Qt::strong_ordering::equal); }
+    void compareInts() { executeComparison<int, Qt::strong_ordering>(); }
+    void compareFloats_data() { generateData(1.0f, 1.1f, Qt::partial_ordering::less); }
+    void compareFloats() { executeComparison<float, Qt::partial_ordering>(); }
+    void compareDoubles_data() { generateData(0.0, 0.1, Qt::partial_ordering::greater); }
+    void compareDoubles() { executeComparison<double, Qt::partial_ordering>(); }
+    void comparePointers_data()
+    { generateData(&values[0], &values[1], Qt::strong_ordering::equal); }
+    void comparePointers() { executeComparison<const int *, Qt::strong_ordering>(); }
+    void compareToNullptr_data() { generateData(ptr, &value, Qt::strong_ordering::equivalent); }
+    void compareToNullptr() { executeComparison<const int *, Qt::strong_ordering>(); }
+    void compareUnregisteredEnum_data()
+    { generateData(MyUnregisteredEnumValue1,
+                   MyUnregisteredEnumValue2, Qt::strong_ordering::less); }
+    void compareUnregisteredEnum()
+    { executeComparison<MyUnregisteredEnum, Qt::strong_ordering>(); }
+    void compareRegisteredEnum_data()
+    { generateData(Qt::Monday, Qt::Sunday, Qt::strong_ordering::greater); }
+    void compareRegisteredEnum() { executeComparison<Qt::DayOfWeek, Qt::strong_ordering>(); }
+    void compareCustomTypes_data() { generateData(val1, val2, Qt::strong_ordering::less); }
+    void compareCustomTypes() { executeComparison<MyClass, Qt::strong_ordering>(); }
+    void stdCompareInts_data() { generateData(1, -2, std::strong_ordering::equal); }
+    void stdCompareInts() { (executeComparison<int, std::strong_ordering>()); }
+    void stdCompareFloats_data()
+    { generateData(2.0f, 1.1f, std::partial_ordering::less); }
+    void stdCompareFloats() { (executeComparison<float, std::partial_ordering>()); }
+    void stdCompareDoubles_data() { generateData(0.15, 0.25, std::partial_ordering::greater); }
+    void stdCompareDoubles() { (executeComparison<double, std::partial_ordering>()); }
+    void stdComparePointers_data()
+    { generateData(&values[0], &values[1], std::strong_ordering::equal); }
+    void stdComparePointers() { executeComparison<const int *, std::strong_ordering>(); }
+    void stdCompareToNullptr_data()
+    { generateData(ptr, &value, std::strong_ordering::equivalent); }
+    void stdCompareToNullptr() { executeComparison<const int *, std::strong_ordering>(); }
+    void stdCompareUnregisteredEnum_data()
+    { generateData(MyUnregisteredEnumValue2,
+                     MyUnregisteredEnumValue1, std::strong_ordering::less); }
+    void stdCompareUnregisteredEnum()
+    { executeComparison<MyUnregisteredEnum, std::strong_ordering>(); }
+    void stdCompareRegisteredEnum_data()
+    { generateData(Qt::Monday, Qt::Friday, std::strong_ordering::greater); }
+    void stdCompareRegisteredEnum() { executeComparison<Qt::DayOfWeek, std::strong_ordering>(); }
+    void stdCompareCustomTypes_data() { generateData(val1, val2, std::strong_ordering::less); }
+    void stdCompareCustomTypes() { executeComparison<MyClass, std::strong_ordering>(); }
+
+    void checkComparisonForTemporaryObjects();
+    void checkWeakComparison();
+};
+
+template <typename OrderingType> inline QByteArray typeName()
+{
+#ifdef __cpp_lib_three_way_comparison
+    if constexpr (std::is_same_v<OrderingType, std::strong_ordering>)
+        return QByteArray("std::strong_ordering");
+    if constexpr (std::is_same_v<OrderingType, std::weak_ordering>)
+        return QByteArray("std::weak_ordering");
+    if constexpr (std::is_same_v<OrderingType, std::partial_ordering>)
+        return QByteArray("std::partial_ordering");
+#endif
+
+    if constexpr (std::is_same_v<OrderingType, Qt::strong_ordering>)
+        return QByteArray("Qt::strong_ordering");
+    if constexpr (std::is_same_v<OrderingType, Qt::partial_ordering>)
+        return QByteArray("Qt::partial_ordering");
+    if constexpr (std::is_same_v<OrderingType, Qt::weak_ordering>)
+        return QByteArray("Qt::weak_ordering");
+}
+
+template <typename T, typename OrderingType>
+void tst_ThreeWayCompare::generateData(T val1, T val2, OrderingType order)
+{
+#ifdef __cpp_lib_three_way_comparison
+    QTest::addColumn<T>("lhs");
+    QTest::addColumn<T>("rhs");
+    QTest::addColumn<OrderingType>("expectedOrder");
+
+    QTest::newRow(typeName<OrderingType>().append("::equivalent").constData())
+            << val1 << val1 << order;
+    QTest::newRow(typeName<OrderingType>().append("::less").constData())
+            << val1 << val2 << order;
+    QTest::newRow(typeName<OrderingType>().append("::greater").constData())
+            << val2 << val1 << order;
+#else
+    Q_UNUSED(val1)
+    Q_UNUSED(val2)
+    Q_UNUSED(order)
+#endif
+}
+
+template <typename T, typename OrderingType>
+void tst_ThreeWayCompare::executeComparison()
+{
+#ifdef __cpp_lib_three_way_comparison
+    QFETCH(T, lhs);
+    QFETCH(T, rhs);
+    QFETCH(OrderingType, expectedOrder);
+    QCOMPARE_3WAY(lhs, rhs, expectedOrder);
+#endif
+}
+
+void tst_ThreeWayCompare::checkComparisonForTemporaryObjects()
+{
+#ifdef __cpp_lib_three_way_comparison
+    QCOMPARE_3WAY(getClassForValue(0).getValuePointer(),
+                  getClassForValue(1).getValuePointer(),
+                  Qt::strong_ordering::less);
+
+    QCOMPARE_3WAY(getClassForValue(0).getValuePointer(),
+                  getClassForValue(1).getValuePointer(),
+                  std::strong_ordering::equal);
+#endif
+}
+
+void tst_ThreeWayCompare::checkWeakComparison()
+{
+#ifdef __cpp_lib_three_way_comparison
+    QUrl example_left("http://example.com");
+    QUrl example_right("http://example.com:0");
+
+    QCOMPARE_3WAY(example_left, example_right, std::weak_ordering::less);
+
+    QDateTime june(QDate(2012, 6, 20), QTime(14, 33, 2, 500));
+    QDateTime juneLater = june.addMSecs(1);
+    QCOMPARE_3WAY(june, juneLater, Qt::weak_ordering::greater);
+#endif
+}
+
+QT_END_NAMESPACE
+
+QTEST_MAIN(tst_ThreeWayCompare)
+#include "tst_threewaycompare.moc"
diff --git a/tests/auto/testlib/selftests/tst_selftests.cpp b/tests/auto/testlib/selftests/tst_selftests.cpp
index d7406386c6a..82324e06bf9 100644
--- a/tests/auto/testlib/selftests/tst_selftests.cpp
+++ b/tests/auto/testlib/selftests/tst_selftests.cpp
@@ -690,6 +690,13 @@ bool TestLogger::shouldIgnoreTest(const QString &test) const
 #endif
     }
 
+#ifndef __cpp_lib_three_way_comparison
+    if (test == "threewaycompare") {
+        WARN("The threewaycompare test requires C++20 support. Skipping.");
+        return true;
+    }
+#endif
+
     if (logger != QTestLog::Plain || outputMode == FileOutput) {
         // The following tests only work with plain text output to stdout,
         // either because they execute multiple test objects or because