Added missing virtual destructors

api/Print.h

@@ -43,6 +43,8 @@ class Print
     void setWriteError(int err = 1) { write_error = err; }
   public:
     Print() : write_error(0) {}
+    virtual ~Print() {}
+
 
     int getWriteError() { return write_error; }
     void clearWriteError() { setWriteError(0); }

api/Printable.h

@@ -34,6 +34,7 @@ class Print;
 class Printable
 {
   public:
+    virtual ~Printable() {}
     virtual size_t printTo(Print& p) const = 0;
 };
 

test/.gitignore

@@ -1 +1,19 @@
-build
+build
+### CMake ###
+CMakeLists.txt.user
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+_deps
+
+### CMake Patch ###
+CMakeUserPresets.json
+
+# External projects
+*-prefix/

test/CMakeLists.txt

@@ -8,11 +8,20 @@ cmake_minimum_required(VERSION 2.8)
 
 project(test-ArduinoCore-API)
 
+Include(FetchContent)
+
+FetchContent_Declare(
+  Catch2
+  GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+  GIT_TAG        v3.4.0
+)
+
+FetchContent_MakeAvailable(Catch2)
+
 ##########################################################################
 
 include_directories(..)
 include_directories(include)
-include_directories(external/catch/v2.13.9/include)
 
 ##########################################################################
 
@@ -103,6 +112,7 @@ set(TEST_SRCS
   src/WCharacter/test_isUpperCase.cpp
   src/WCharacter/test_isWhitespace.cpp
   src/WCharacter/test_toAscii.cpp
+  src/Interfaces/test_virtualDestructor.cpp
 )
 
 set(TEST_DUT_SRCS
@@ -118,7 +128,6 @@ set(TEST_DUT_SRCS
 ##########################################################################
 
 set(TEST_TARGET_SRCS
-  src/main.cpp
   src/dtostrf.cpp
   src/itoa.cpp
   src/MillisFake.cpp
@@ -144,5 +153,7 @@ add_executable(
   ${TEST_TARGET_SRCS}
 )
 
+target_link_libraries( ${TEST_TARGET} Catch2WithMain )
+
 ##########################################################################