test_helpers.py 文件源码

def invoke(cls, **kwargs):
        """Mocked invoke function that returns a reponse mimicking boto3's reponse

        Keyword Arguments:
            FuncitonName (str): The AWS Lambda function name being invoked
            InvocationType (str): Type of invocation (typically 'Event')
            Payload (str): Payload in string or file format to send to lambda
            Qualifier (str): Alias for fully qualified AWS ARN

        Returns:
            dict: Response dictionary containing a fake RequestId
        """
        if cls._raise_exception:
            # Turn of the raise exception boolean so we don't do this next time
            cls._raise_exception = not cls._raise_exception
            err = {'Error': {'Code': 400, 'Message': 'raising test exception'}}
            raise ClientError(err, 'invoke')

        req_keywords = {'FunctionName', 'InvocationType', 'Payload'}
        key_diff = req_keywords.difference(set(kwargs))
        if key_diff:
            message = 'required keyword missing: {}'.format(', '.join(key_diff))
            err = {'Error': {'Code': 400, 'Message': message}}
            raise ClientError(err, 'invoke')

        if not isinstance(kwargs['Payload'], (str, bytearray)):
            if not hasattr(kwargs['Payload'], 'read'):
                err = ('Invalid type for parameter Payload, value: {}, type: {}, '
                       'valid types: <type \'str\'>, <type \'bytearray\'>, '
                       'file-like object').format(kwargs['Payload'], type(kwargs['Payload']))
                raise ParamValidationError(response=err)

        return {'ResponseMetadata': {'RequestId': '9af88643-7b3c-43cd-baae-addb73bb4d27'}}