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Tests for assertions provided by C{SynchronousTestCase} and C{TestCase},
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L{TestFailureTests} demonstrates that L{SynchronousTestCase.fail} works, so that
is the only method on C{twisted.trial.unittest.SynchronousTestCase} that is
initially assumed to work. The test classes are arranged so that the methods
demonstrated to work earlier in the file are used by those later in the file
(even though the runner will probably not run the tests in this order).
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Tests for the most basic functionality of L{SynchronousTestCase}, for
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Tests for L{SynchronousTestCase}'s C{assertFalse} and C{failIf} assertion
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Tests for L{SynchronousTestCase}'s C{assertTrue} and C{failUnless} assertion
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Tests for L{SynchronousTestCase}'s assertion methods. That is, failUnless*,
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If C{assertRaises} is used to create a context manager and an exception
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raised.
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mismatch.
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If C{assertRaises} is used to create a context manager and no exception
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C{failIfIdentical} returns its first argument if its first and second
arguments are not the same object.
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C{failIfIdentical} raises C{failureException} if its first and second
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L{assertIs} passes if two objects are identical.
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L{assertIsNot} passes if two objects are not identical.
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If L{TestCase.assertIsInstance} is passed a custom message as its 3rd
argument, the message is included in the failure exception raised when
the assertion fails.
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L{twisted.trial.unittest.TestCase} supports the C{assertDictEqual}
method inherited from the standard library in Python 2.7.
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