How to use _create_user_warning method in Testify

Best Python code snippet using Testify_python

assertions_test.py

Source:assertions_test.py

...648            while True:649                yield 'y'650        assertions.assert_not_empty(yes())651class AssertWarnsTestCase(TestCase):652    def _create_user_warning(self):653        warnings.warn('Hey!', stacklevel=2)654    def _create_deprecation_warning(self):655        warnings.warn('Deprecated!', DeprecationWarning, stacklevel=2)656    def _raise_exception(self, *args):657        raise RuntimeError('A test got too far! args=%r' % args)658    def test_fails_when_no_warning(self):659        """Test that assert_warns fails when there is no warning thrown."""660        with assertions.assert_raises(AssertionError):661            with assertions.assert_warns():662                pass663    def test_fails_when_no_warning_with_callable(self):664        """Test that assert_warns fails when there is no warning thrown."""665        with assertions.assert_raises(AssertionError):666            def do_nothing():667                pass668            assertions.assert_warns(UserWarning, do_nothing)669    def test_fails_when_incorrect_warning(self):670        """671        Test that assert_warns fails when we pass a specific warning and672        a different warning class is thrown.673        """674        with assertions.assert_raises(AssertionError):675            with assertions.assert_warns(DeprecationWarning):676                self._create_user_warning()677    def test_fails_when_incorrect_warning_with_callable(self):678        """679        Test that assert_warns fails when we pass a specific warning and680        a different warning class is thrown.681        """682        with assertions.assert_raises(AssertionError):683            assertions.assert_warns(DeprecationWarning, self._create_user_warning)684    def test_passes_with_any_warning(self):685        """Test that assert_warns passes if no specific warning class is given."""686        with assertions.assert_warns():687            self._create_user_warning()688    def test_passes_with_specific_warning(self):689        """Test that assert_warns passes if a specific warning class is given and thrown."""690        with assertions.assert_warns(DeprecationWarning):691            self._create_deprecation_warning()692    def test_passes_with_specific_warning_with_callable(self):693        """Test that assert_warns passes if a specific warning class is given and thrown."""694        assertions.assert_warns(DeprecationWarning, self._create_deprecation_warning)695    def test_passes_with_specific_warning_with_callable_arguments(self):696        """Test that assert_warns passes args and kwargs to the callable correctly."""697        def _requires_args_and_kwargs(*args, **kwargs):698            if args != ['foo'] and kwargs != {'bar': 'bar'}:699                raise ValueError('invalid values for args and kwargs')700            self._create_user_warning()701        # If we hit the ArgumentError, our test fails.702        assertions.assert_warns(UserWarning, _requires_args_and_kwargs, 'foo', bar='bar')703    def test_fails_when_warnings_test_raises_exception(self):704        """705        Test that assert_warns_such_that (used as a context manager)706        fails when the warnings_test method raises an exception.707        """708        with assertions.assert_raises(RuntimeError):709            with assertions.assert_warns_such_that(self._raise_exception):710                self._create_user_warning()711    def test_passes_when_warnings_test_returns_true(self):712        """713        Test that assert_warns_such_that (used as a context manager)714        passes when the warnings_test method returns True.715        This should happen if warnings is populated correctly.716        """717        def one_user_warning_caught(warnings):718            assert_equal([UserWarning], [w.category for w in warnings])719        with assertions.assert_warns_such_that(one_user_warning_caught):720            self._create_user_warning()721    def test_fails_when_warnings_test_raises_exception_with_callable(self):722        """723        Test that assert_warns_such_that (when given a callable object)724        fails when the warnings_test method raises an exception.725        """726        with assertions.assert_raises(RuntimeError):727            assertions.assert_warns_such_that(self._raise_exception,728                                              self._create_user_warning)729    def test_passes_when_warnings_test_returns_true_with_callable(self):730        """731        Test that assert_warns_such_that (when given a callable object)732        passes when the warnings_test method returns True.733        This should happen if warnings is populated correctly.734        """735        def create_multiple_warnings(warnings_count):736            for _ in range(warnings_count):737                self._create_user_warning()738        def three_warnings_caught(warnings):739            assert_equal(len(warnings), 3)740        assertions.assert_warns_such_that(three_warnings_caught,741                                          create_multiple_warnings, 3)742class DocTest(DocTestCase):743    module = assertions744if __name__ == '__main__':745    run()...

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