def test_add_request_handler_chain_throw_error_for_null_chain(self):
test_exception_mapper = GenericExceptionMapper(exception_handlers=None)
with self.assertRaises(DispatchException) as exc:
test_exception_mapper.add_exception_handler(None)
assert "Input is not an AbstractExceptionHandler instance" in str(
exc.exception
), ("Exception Mapper didn't throw error during add_exception_handler "
"method call when "
"an invalid Exception Handler is passed")
def test_add_exception_handler_for_valid_handler_type(self):
test_exception_handler = mock.MagicMock(spec=AbstractExceptionHandler)
test_exception_mapper = GenericExceptionMapper(exception_handlers=None)
test_exception_mapper.add_exception_handler(test_exception_handler)
assert test_exception_mapper.exception_handlers == [
test_exception_handler
], ("Exception Mapper throws exception when a valid Exception Handler "
"is provided in the "
"add_handler method")