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vcrpy/tests/integration/test_tornado.py
2025-11-19 12:18:05 -03:00

411 lines
14 KiB
Python

"""Test requests' interaction with vcr"""
import asyncio
import functools
import inspect
import json
import os
import ssl
import pytest
import vcr
from vcr.errors import CannotOverwriteExistingCassetteException
from ..assertions import assert_cassette_empty, assert_is_json_bytes
tornado = pytest.importorskip("tornado")
gen = pytest.importorskip("tornado.gen")
http = pytest.importorskip("tornado.httpclient")
# whether the current version of Tornado supports the raise_error argument for
# fetch().
supports_raise_error = tornado.version_info >= (4,)
raise_error_for_response_code_only = tornado.version_info >= (6,)
def gen_test(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
async def coro():
return await gen.coroutine(func)(*args, **kwargs)
return asyncio.run(coro())
# Patch the signature so pytest can inject fixtures
# we can't use wrapt.decorator because it returns a generator function
wrapper.__signature__ = inspect.signature(func)
return wrapper
@pytest.fixture(params=["simple", "curl", "default"])
def get_client(request):
ca_bundle_path = os.environ.get("REQUESTS_CA_BUNDLE")
ssl_ctx = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
ssl_ctx.load_verify_locations(cafile=ca_bundle_path)
ssl_ctx.verify_mode = ssl.CERT_REQUIRED
if request.param == "simple":
from tornado import simple_httpclient as simple
return lambda: simple.SimpleAsyncHTTPClient(defaults={"ssl_options": ssl_ctx})
if request.param == "curl":
curl = pytest.importorskip("tornado.curl_httpclient")
return lambda: curl.CurlAsyncHTTPClient(defaults={"ca_certs": ca_bundle_path})
return lambda: http.AsyncHTTPClient(defaults={"ssl_options": ssl_ctx})
def get(client, url, **kwargs):
fetch_kwargs = {}
if supports_raise_error:
fetch_kwargs["raise_error"] = kwargs.pop("raise_error", True)
return client.fetch(http.HTTPRequest(url, method="GET", **kwargs), **fetch_kwargs)
def post(client, url, data=None, **kwargs):
if data:
kwargs["body"] = json.dumps(data)
return client.fetch(http.HTTPRequest(url, method="POST", **kwargs))
@pytest.mark.online
@gen_test
def test_status_code(get_client, tmpdir, httpbin_both):
"""Ensure that we can read the status code"""
url = httpbin_both.url
with vcr.use_cassette(str(tmpdir.join("atts.yaml"))):
status_code = (yield get(get_client(), url)).code
with vcr.use_cassette(str(tmpdir.join("atts.yaml"))) as cass:
assert status_code == (yield get(get_client(), url)).code
assert cass.play_count == 1
@pytest.mark.online
@gen_test
def test_headers(get_client, httpbin_both, tmpdir):
"""Ensure that we can read the headers back"""
url = httpbin_both.url
with vcr.use_cassette(str(tmpdir.join("headers.yaml"))):
headers = (yield get(get_client(), url)).headers
with vcr.use_cassette(str(tmpdir.join("headers.yaml"))) as cass:
assert headers == (yield get(get_client(), url)).headers
assert cass.play_count == 1
@pytest.mark.online
@gen_test
def test_body(get_client, tmpdir, httpbin_both):
"""Ensure the responses are all identical enough"""
url = httpbin_both.url + "/bytes/1024"
with vcr.use_cassette(str(tmpdir.join("body.yaml"))):
content = (yield get(get_client(), url)).body
with vcr.use_cassette(str(tmpdir.join("body.yaml"))) as cass:
assert content == (yield get(get_client(), url)).body
assert cass.play_count == 1
@gen_test
def test_effective_url(get_client, tmpdir, httpbin):
"""Ensure that the effective_url is captured"""
url = httpbin.url + "/redirect/1"
with vcr.use_cassette(str(tmpdir.join("url.yaml"))):
effective_url = (yield get(get_client(), url)).effective_url
assert effective_url == httpbin.url + "/get"
with vcr.use_cassette(str(tmpdir.join("url.yaml"))) as cass:
assert effective_url == (yield get(get_client(), url)).effective_url
assert cass.play_count == 1
@pytest.mark.online
@gen_test
def test_auth(get_client, tmpdir, httpbin_both):
"""Ensure that we can handle basic auth"""
auth = ("user", "passwd")
url = httpbin_both.url + "/basic-auth/user/passwd"
with vcr.use_cassette(str(tmpdir.join("auth.yaml"))):
one = yield get(get_client(), url, auth_username=auth[0], auth_password=auth[1])
with vcr.use_cassette(str(tmpdir.join("auth.yaml"))) as cass:
two = yield get(get_client(), url, auth_username=auth[0], auth_password=auth[1])
assert one.body == two.body
assert one.code == two.code
assert cass.play_count == 1
@pytest.mark.online
@gen_test
def test_auth_failed(get_client, tmpdir, httpbin_both):
"""Ensure that we can save failed auth statuses"""
auth = ("user", "wrongwrongwrong")
url = httpbin_both.url + "/basic-auth/user/passwd"
with vcr.use_cassette(str(tmpdir.join("auth-failed.yaml"))) as cass:
# Ensure that this is empty to begin with
assert_cassette_empty(cass)
with pytest.raises(http.HTTPError) as exc_info:
yield get(get_client(), url, auth_username=auth[0], auth_password=auth[1])
one = exc_info.value.response
assert exc_info.value.code == 401
with vcr.use_cassette(str(tmpdir.join("auth-failed.yaml"))) as cass:
with pytest.raises(http.HTTPError) as exc_info:
two = yield get(get_client(), url, auth_username=auth[0], auth_password=auth[1])
two = exc_info.value.response
assert exc_info.value.code == 401
assert one.body == two.body
assert one.code == two.code == 401
assert cass.play_count == 1
@pytest.mark.online
@gen_test
def test_post(get_client, tmpdir, httpbin_both):
"""Ensure that we can post and cache the results"""
data = {"key1": "value1", "key2": "value2"}
url = httpbin_both.url + "/post"
with vcr.use_cassette(str(tmpdir.join("requests.yaml"))):
req1 = (yield post(get_client(), url, data)).body
with vcr.use_cassette(str(tmpdir.join("requests.yaml"))) as cass:
req2 = (yield post(get_client(), url, data)).body
assert req1 == req2
assert cass.play_count == 1
@gen_test
def test_redirects(get_client, tmpdir, httpbin):
"""Ensure that we can handle redirects"""
url = httpbin + "/redirect-to?url=bytes/1024&status_code=301"
with vcr.use_cassette(str(tmpdir.join("requests.yaml"))):
content = (yield get(get_client(), url)).body
with vcr.use_cassette(str(tmpdir.join("requests.yaml"))) as cass:
assert content == (yield get(get_client(), url)).body
assert cass.play_count == 1
@pytest.mark.online
@gen_test
def test_cross_scheme(get_client, tmpdir, httpbin, httpbin_secure):
"""Ensure that requests between schemes are treated separately"""
# First fetch a url under http, and then again under https and then
# ensure that we haven't served anything out of cache, and we have two
# requests / response pairs in the cassette
url = httpbin.url
url_secure = httpbin_secure.url
with vcr.use_cassette(str(tmpdir.join("cross_scheme.yaml"))) as cass:
yield get(get_client(), url)
yield get(get_client(), url_secure)
assert cass.play_count == 0
assert len(cass) == 2
# Then repeat the same requests and ensure both were replayed.
with vcr.use_cassette(str(tmpdir.join("cross_scheme.yaml"))) as cass:
yield get(get_client(), url)
yield get(get_client(), url_secure)
assert cass.play_count == 2
@pytest.mark.online
@gen_test
def test_gzip(get_client, tmpdir, httpbin_both):
"""
Ensure that httpclient is able to automatically decompress the response
body
"""
url = httpbin_both + "/gzip"
# use_gzip was renamed to decompress_response in 4.0
kwargs = {}
if tornado.version_info < (4,):
kwargs["use_gzip"] = True
else:
kwargs["decompress_response"] = True
with vcr.use_cassette(str(tmpdir.join("gzip.yaml"))):
response = yield get(get_client(), url, **kwargs)
assert_is_json_bytes(response.body)
with vcr.use_cassette(str(tmpdir.join("gzip.yaml"))) as cass:
response = yield get(get_client(), url, **kwargs)
assert_is_json_bytes(response.body)
assert cass.play_count == 1
@pytest.mark.online
@gen_test
def test_https_with_cert_validation_disabled(get_client, tmpdir, httpbin_secure):
cass_path = str(tmpdir.join("cert_validation_disabled.yaml"))
url = httpbin_secure.url
with vcr.use_cassette(cass_path):
yield get(get_client(), url, validate_cert=False)
with vcr.use_cassette(cass_path) as cass:
yield get(get_client(), url, validate_cert=False)
assert cass.play_count == 1
@gen_test
def test_unsupported_features_raises_in_future(get_client, tmpdir, httpbin):
"""Ensure that the exception for an AsyncHTTPClient feature not being
supported is raised inside the future."""
def callback(chunk):
raise AssertionError("Did not expect to be called.")
with vcr.use_cassette(str(tmpdir.join("invalid.yaml"))):
future = get(get_client(), httpbin.url, streaming_callback=callback)
with pytest.raises(Exception) as excinfo:
yield future
assert "not yet supported by VCR" in str(excinfo)
@pytest.mark.skipif(not supports_raise_error, reason="raise_error unavailable in tornado <= 3")
@pytest.mark.skipif(
raise_error_for_response_code_only,
reason="raise_error only ignores HTTPErrors due to response code",
)
@gen_test
def test_unsupported_features_raise_error_disabled(get_client, tmpdir):
"""Ensure that the exception for an AsyncHTTPClient feature not being
supported is not raised if raise_error=False."""
def callback(chunk):
raise AssertionError("Did not expect to be called.")
with vcr.use_cassette(str(tmpdir.join("invalid.yaml"))):
response = yield get(
get_client(),
"http://httpbin.org",
streaming_callback=callback,
raise_error=False,
)
assert "not yet supported by VCR" in str(response.error)
@pytest.mark.online
@gen_test
def test_cannot_overwrite_cassette_raises_in_future(get_client, tmpdir, httpbin):
"""Ensure that CannotOverwriteExistingCassetteException is raised inside
the future."""
url = httpbin.url
with vcr.use_cassette(str(tmpdir.join("overwrite.yaml"))):
yield get(get_client(), url + "/get")
with vcr.use_cassette(str(tmpdir.join("overwrite.yaml"))):
future = get(get_client(), url + "/headers")
with pytest.raises(CannotOverwriteExistingCassetteException):
yield future
@pytest.mark.skipif(not supports_raise_error, reason="raise_error unavailable in tornado <= 3")
@pytest.mark.skipif(
raise_error_for_response_code_only,
reason="raise_error only ignores HTTPErrors due to response code",
)
@gen_test
def test_cannot_overwrite_cassette_raise_error_disabled(get_client, tmpdir, httpbin):
"""Ensure that CannotOverwriteExistingCassetteException is not raised if
raise_error=False in the fetch() call."""
url = httpbin.url
with vcr.use_cassette(str(tmpdir.join("overwrite.yaml"))):
yield get(get_client(), url + "/get", raise_error=False)
with vcr.use_cassette(str(tmpdir.join("overwrite.yaml"))):
response = yield get(get_client(), url + "/headers", raise_error=False)
assert isinstance(response.error, CannotOverwriteExistingCassetteException)
@gen_test
@vcr.use_cassette(path_transformer=vcr.default_vcr.ensure_suffix(".yaml"))
def test_tornado_with_decorator_use_cassette(get_client):
response = yield get_client().fetch(http.HTTPRequest("http://www.google.com/", method="GET"))
assert response.body.decode("utf-8") == "not actually google"
@gen_test
@vcr.use_cassette(path_transformer=vcr.default_vcr.ensure_suffix(".yaml"))
def test_tornado_exception_can_be_caught(get_client):
try:
yield get(get_client(), "http://httpbin.org/status/500")
except http.HTTPError as e:
assert e.code == 500
try:
yield get(get_client(), "http://httpbin.org/status/404")
except http.HTTPError as e:
assert e.code == 404
@pytest.mark.online
@gen_test
def test_existing_references_get_patched(tmpdir, httpbin):
from tornado.httpclient import AsyncHTTPClient
url = httpbin.url + "/get"
with vcr.use_cassette(str(tmpdir.join("data.yaml"))):
client = AsyncHTTPClient()
yield get(client, url)
with vcr.use_cassette(str(tmpdir.join("data.yaml"))) as cass:
yield get(client, url)
assert cass.play_count == 1
@pytest.mark.online
@gen_test
def test_existing_instances_get_patched(get_client, tmpdir, httpbin):
"""Ensure that existing instances of AsyncHTTPClient get patched upon
entering VCR context."""
url = httpbin.url + "/get"
client = get_client()
with vcr.use_cassette(str(tmpdir.join("data.yaml"))):
yield get(client, url)
with vcr.use_cassette(str(tmpdir.join("data.yaml"))) as cass:
yield get(client, url)
assert cass.play_count == 1
@pytest.mark.online
@gen_test
def test_request_time_is_set(get_client, tmpdir, httpbin):
"""Ensures that the request_time on HTTPResponses is set."""
url = httpbin.url + "/get"
with vcr.use_cassette(str(tmpdir.join("data.yaml"))):
client = get_client()
response = yield get(client, url)
assert response.request_time is not None
with vcr.use_cassette(str(tmpdir.join("data.yaml"))) as cass:
client = get_client()
response = yield get(client, url)
assert response.request_time is not None
assert cass.play_count == 1