tornado-openapi3/tornado_openapi3/testing.py
2021-02-26 15:28:32 -05:00

62 lines
2 KiB
Python

from typing import Any
import tornado.httpclient # type: ignore
import tornado.testing # type: ignore
from openapi_core import create_spec # type: ignore
from tornado_openapi3.responses import ResponseValidator
class AsyncOpenAPITestCase(tornado.testing.AsyncHTTPTestCase):
@property
def spec(self) -> dict:
"""The OpenAPI 3 specification as a Python dictionary.
Override this in your request handlers to load or define your OpenAPI 3
spec.
"""
return dict()
@property
def custom_media_type_deserializers(self) -> dict:
"""A dictionary mapping media types to deserializing functions.
If your endpoints make use of content types beyond ``application/json``,
you must add them to this dictionary with a deserializing method that
converts the raw body (as ``bytes`` or ``str``) to Python objects.
"""
return dict()
def setUp(self) -> None:
"""Hook method for setting up the test fixture before exercising it.
Instantiates the :class:`tornado_openapi3.responses.ResponseValidator`
for this test case.
"""
super().setUp()
self.validator = ResponseValidator(
create_spec(self.spec),
custom_media_type_deserializers=self.custom_media_type_deserializers,
)
def fetch(
self, path: str, raise_error: bool = False, **kwargs: Any
) -> tornado.httpclient.HTTPResponse:
"""Convenience methiod to synchronously fetch a URL.
Extends the fetch method in Tornado's
:class:``tornado.testing.AsyncHTTPTestCase`` to perform OpenAPI 3
validation on the response received before returning it. If validation
fails, an :class:`openapi_core.exceptions.OpenAPIError` will be raised
describing the failure.
"""
response = super().fetch(path, raise_error=False, **kwargs)
result = self.validator.validate(response)
result.raise_for_errors()
if raise_error:
response.rethrow()
return response