**Overview**

In AWS it is possible to trigger step functions through an API Gateway integration, see https://docs.aws.amazon.com/step-functions/latest/dg/tutorial-api-gateway.html

Similar integrations already occur within localstack, however the step function URIs are notably missing. See lines 66-88 of https://github.com/localstack/localstack/blob/master/localstack/services/apigateway/apigateway_listener.py



┆Issue is synchronized with this [Jira Bug](https://localstack.atlassian.net/browse/LOC-107) by [Unito](https://www.unito.io/learn-more)

stream = aws_stack.create_kinesis_stream(self.TEST_STREAM_KINESIS_API_GW)
        stream.wait_for()
        
        result = self.connect_api_gateway_to_kinesis('test_gateway1', self.TEST_STREAM_KINESIS_API_GW)
        
        test_data = {'records': [
            {'data': '{"foo": "bar1"}'},
            {'data': '{"foo": "bar2"}'},
            {'data': '{"foo": "bar3"}'}
        ]}
        url = gateway_request_url(
            api_id=result['id'], stage_name=self.TEST_STAGE_NAME, path=self.API_PATH_DATA_INBOUND)
        
        result = requests.get(url)
        result = json.loads(to_str(result.content))
        self.assertIn('StreamNames', result)
        
        result = requests.post(url, data=json.dumps(test_data))
        result = json.loads(to_str(result.content))
        self.assertEqual(result['FailedRecordCount'], 0)
        self.assertEqual(len(result['Records']), len(test_data['records']))
        
        kinesis = aws_stack.connect_to_service('kinesis')
        kinesis.delete_stream(StreamName=self.TEST_STREAM_KINESIS_API_GW)
    def test_api_gateway_sqs_integration_with_event_source(self):