def to_have_an_error_message_of(topic, expected):
'''Asserts that `topic` has an error message of `expected`.'''
if utils.text_type(topic) != expected:
msg = 'Expected topic({0!r}) to be an error with message {1!r}'
values = utils.text_type(topic), expected
err = AssertionError(msg.format(*values))
raise err
def __exit__(self, exc_type, exc_val, exc_tb):
has_exception = exc_type is not None
is_subclass = has_exception and (exc_type is self.error_class or issubclass(exc_type, self.error_class)) or False
if has_exception and self.message is not None:
error_msg = getattr(exc_val, 'message', utils.text_type(exc_val))
if error_msg != self.message:
raise AssertionError('Expected "%s.%s" to have a message of "%s", but the actual error was "%s".' % (
self.error_class.__module__,
self.error_class.__name__,
self.message,
error_msg
))
if has_exception and not is_subclass:
raise AssertionError('Expected "%s.%s" not to happen but "%s.%s" happened during execution of with block.' % (
self.error_class.__module__,
self.error_class.__name__,
exc_type.__module__,
exc_type.__name__
))
if has_exception:
raise AssertionError('Expected "%s.%s" not to happen but it happened during execution of with block.' % (
self.error_class.__module__,
self.error_class.__name__,
))
def we_get_an_understandable_message(self, topic):
expected_message = "Expected topic({0!r}) to be an error with message {1!r}".format(
utils.text_type(ValueError('some bogus error')),
'some bogus'
)
expect(topic).to_have_an_error_message_of(expected_message)
