Method assertRaises

tests/PexpectTestCase.py:99–105

(self, excClass)

        # removed when we drop Python 2.6 support.
        @contextlib.contextmanager
        def assertRaises(self, excClass):
            try:
                yield
            except Exception as e:
                assert isinstance(e, excClass)
            else:
                raise AssertionError("%s was not raised" % excClass)

        @contextlib.contextmanager
        def assertRaisesRegex(self, excClass, pattern):