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How to use test_fails_when_exception_is_not_raised method in Testify

Best Python code snippet using Testify_python

assertions_test.py

Source:assertions_test.py

...330            assertions.assert_equal(len(w), 0)331class MyException(Exception):332    pass333class AssertRaisesAsContextManagerTestCase(TestCase):334    def test_fails_when_exception_is_not_raised(self):335        def exception_should_be_raised():336            with assertions.assert_raises(MyException):337                pass338        try:339            exception_should_be_raised()340        except AssertionError:341            pass342        else:343            assert_not_reached('AssertionError should have been raised')344    def test_passes_when_exception_is_raised(self):345        def exception_should_be_raised():346            with assertions.assert_raises(MyException):347                raise MyException348        exception_should_be_raised()349    def test_crashes_when_another_exception_class_is_raised(self):350        def assert_raises_an_exception_and_raise_another():351            with assertions.assert_raises(MyException):352                raise ValueError353        try:354            assert_raises_an_exception_and_raise_another()355        except ValueError:356            pass357        else:358            raise AssertionError('ValueError should have been raised')359class AssertRaisesAsCallableTestCase(TestCase):360    def test_fails_when_exception_is_not_raised(self):361        def raises_nothing():362            pass363        try:364            assertions.assert_raises(ValueError, raises_nothing)365        except AssertionError:366            pass367        else:368            assert_not_reached('AssertionError should have been raised')369    def test_passes_when_exception_is_raised(self):370        def raises_value_error():371            raise ValueError372        assertions.assert_raises(ValueError, raises_value_error)373    def test_fails_when_wrong_exception_is_raised(self):374        def raises_value_error():375            raise ValueError376        try:377            assertions.assert_raises(MyException, raises_value_error)378        except ValueError:379            pass380        else:381            assert_not_reached('ValueError should have been raised')382    def test_callable_is_called_with_all_arguments(self):383        class GoodArguments(Exception):384            pass385        arg1, arg2, kwarg = object(), object(), object()386        def check_arguments(*args, **kwargs):387            assert_equal((arg1, arg2), args)388            assert_equal({'kwarg': kwarg}, kwargs)389            raise GoodArguments390        assertions.assert_raises(GoodArguments, check_arguments, arg1, arg2, kwarg=kwarg)391class AssertRaisesSuchThatTestCase(TestCase):392    def test_fails_when_no_exception_is_raised(self):393        """Tests that the assertion fails when no exception is raised."""394        def exists(e):395            return True396        with assertions.assert_raises(AssertionError):397            with assertions.assert_raises_such_that(Exception, exists):398                pass399    def test_fails_when_wrong_exception_is_raised(self):400        """Tests that when an unexpected exception is raised, that it is401        passed through and the assertion fails."""402        def exists(e):403            return True404        # note: in assert_raises*, if the exception raised is not of the405        # expected type, that exception just falls through406        with assertions.assert_raises(Exception):407            with assertions.assert_raises_such_that(AssertionError, exists):408                raise Exception("the wrong exception")409    def test_fails_when_exception_test_fails(self):410        """Tests that when an exception of the right type that fails the411        passed in exception test is raised, the assertion fails."""412        def has_two_args(e):413            assertions.assert_length(e.args, 2)414        with assertions.assert_raises(AssertionError):415            with assertions.assert_raises_such_that(Exception, has_two_args):416                raise Exception("only one argument")417    def test_passes_when_correct_exception_is_raised(self):418        """Tests that when an exception of the right type that passes the419        exception test is raised, the assertion passes."""420        def has_two_args(e):421            assertions.assert_length(e.args, 2)422        with assertions.assert_raises_such_that(Exception, has_two_args):423            raise Exception("first", "second")424    def test_callable_is_called_with_all_arguments(self):425        """Tests that the callable form works properly, with all arguments426        passed through."""427        def message_is_foo(e):428            assert_equal(str(e), 'foo')429        class GoodArguments(Exception):430            pass431        arg1, arg2, kwarg = object(), object(), object()432        def check_arguments(*args, **kwargs):433            assert_equal((arg1, arg2), args)434            assert_equal({'kwarg': kwarg}, kwargs)435            raise GoodArguments('foo')436        assertions.assert_raises_such_that(GoodArguments, message_is_foo, check_arguments, arg1, arg2, kwarg=kwarg)437class AssertRaisesExactlyTestCase(TestCase):438    class MyException(ValueError):439        pass440    def test_passes_when_correct_exception_is_raised(self):441        with assertions.assert_raises_exactly(self.MyException, "first", "second"):442            raise self.MyException("first", "second")443    def test_fails_with_wrong_value(self):444        with assertions.assert_raises(AssertionError):445            with assertions.assert_raises_exactly(self.MyException, "first", "second"):446                raise self.MyException("red", "blue")447    def test_fails_with_different_class(self):448        class SpecialException(self.MyException):449            pass450        with assertions.assert_raises(AssertionError):451            with assertions.assert_raises_exactly(self.MyException, "first", "second"):452                raise SpecialException("first", "second")453    def test_fails_with_vague_class(self):454        with assertions.assert_raises(AssertionError):455            with assertions.assert_raises_exactly(Exception, "first", "second"):456                raise self.MyException("first", "second")457    def test_unexpected_exception_passes_through(self):458        class DifferentException(Exception):459            pass460        with assertions.assert_raises(DifferentException):461            with assertions.assert_raises_exactly(self.MyException, "first", "second"):462                raise DifferentException("first", "second")463class AssertRaisesAndContainsTestCase(TestCase):464    def test_fails_when_exception_is_not_raised(self):465        def raises_nothing():466            pass467        try:468            assertions.assert_raises_and_contains(ValueError, 'abc', raises_nothing)469        except AssertionError:470            pass471        else:472            assert_not_reached('AssertionError should have been raised')473    def test_fails_when_wrong_exception_is_raised(self):474        def raises_value_error():475            raise ValueError476        try:477            assertions.assert_raises_and_contains(MyException, 'abc', raises_value_error)478        except ValueError:...

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