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How to use test_context_manager method in pyshould

Best Python code snippet using pyshould_python

test_lock.py

...53    lock = RedLock("test_from_url", [{"url": "redis://localhost/0"}], ttl=1000)54    locked = lock.acquire()55    lock.release()56    assert locked is True57def test_context_manager():58    """59    Test a RedLock can be released by the context manager automically.60    """61    ttl = 100062    with RedLock("test_context_manager", [{"host": "localhost"}], ttl=ttl) as validity:63        assert 0 < validity < ttl - ttl * CLOCK_DRIFT_FACTOR - 264        lock = RedLock("test_context_manager", [{"host": "localhost"}], ttl=ttl)65        locked = lock.acquire()66        assert locked is False67    lock = RedLock("test_context_manager", [{"host": "localhost"}], ttl=ttl)68    locked = lock.acquire()69    assert locked is True70    # try to lock again within a with block71    try:...

Chapter_18.py

Source: Chapter_18.py

...50# Please Don't divide by zero !51############## Simplify the creation of Context manager using @contextlib.contextmanager decorator :52import contextlib53@contextlib.contextmanager54def test_context_manager():55    # Prepare some context ...56    import sys57    original_write = sys.stdout.write58    def reverse_write(text):59        original_write(text[::-1])60    sys.stdout.write = reverse_write61    yield "Mohamed" # ================ The code until the part, represents the __enter__ method , and the coming is the  __exist__ method62    sys.stdout.write = original_write63with test_context_manager() as test_1:64    print("ABCD")65    print(test_1)66#  Output:67# DCBA68#  demahoM69# update test_context_manager to handle excpetions :70@contextlib.contextmanager71def test_context_manager():72    import sys73    original_write = sys.stdout.write74    def reverse_write(text):75        original_write(text[::-1])76    sys.stdout.write = reverse_write77    msg = ""    # empty string78    try:79        yield "Mohamed"     # If an exception occured inside the with block, it will be propagate until here80    except ZeroDivisionError:81        msg = "Please Don't divide by zero !"82    finally:83        sys.stdout.write = original_write84        if msg:85            print(msg)

test_management.py

Source: test_management.py

...4from djangae.contrib import sleuth5from djangae.core.management import execute_from_command_line6from djangae.test import TestCase7@contextmanager8def test_context_manager(*args, **kwargs):9    yield10class ManagementCommandsTest(TestCase):11    def test_arguments_are_passed_through_correctly(self):12        with sleuth.switch("django.core.management.execute_from_command_line", lambda *args, **kwargs: None) as django_execute_mock, \13             sleuth.switch("djangae.sandbox.activate", test_context_manager):14            execute_from_command_line(['manage.py', 'arg1', 'arg2', 'arg3',])15            self.assertEqual(1, django_execute_mock.call_count)16            self.assertEqual((['manage.py', 'arg1', 'arg2', 'arg3',],), django_execute_mock.calls[0].args)17    def test_sandbox_can_be_specified(self):18        with sleuth.switch("django.core.management.execute_from_command_line", lambda *args, **kwargs: None) as django_execute_mock, \19             sleuth.switch("djangae.sandbox.activate", test_context_manager) as activate_sandbox_mock:20            # test default sandbox is used if no sandbox argument21            execute_from_command_line(['manage.py', 'arg1', 'arg2',])22            self.assertEqual(1, activate_sandbox_mock.call_count)...

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