synapse/tests/test_utils/__init__.py

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

160 lines
4.9 KiB
Python
Raw Normal View History

#
2023-11-21 23:29:58 +03:00
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2019-2021 The Matrix.org Foundation C.I.C.
2023-11-21 23:29:58 +03:00
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
"""
Utilities for running the unit tests
"""
import base64
import json
import sys
import warnings
from binascii import unhexlify
from typing import TYPE_CHECKING, Awaitable, Callable, Tuple, TypeVar
2020-12-02 21:22:01 +03:00
import attr
import zope.interface
2020-12-02 21:22:01 +03:00
from twisted.internet.interfaces import IProtocol
2020-12-02 21:22:01 +03:00
from twisted.python.failure import Failure
from twisted.web.client import ResponseDone
from twisted.web.http import RESPONSES
from twisted.web.http_headers import Headers
from twisted.web.iweb import IResponse
from synapse.types import JsonSerializable
2020-12-02 21:22:01 +03:00
if TYPE_CHECKING:
from sys import UnraisableHookArgs
TV = TypeVar("TV")
def get_awaitable_result(awaitable: Awaitable[TV]) -> TV:
"""Get the result from an Awaitable which should have completed
Asserts that the given awaitable has a result ready, and returns its value
"""
i = awaitable.__await__()
try:
next(i)
except StopIteration as e:
# awaitable returned a result
return e.value
# if next didn't raise, the awaitable hasn't completed.
raise Exception("awaitable has not yet completed")
def setup_awaitable_errors() -> Callable[[], None]:
"""
Convert warnings from a non-awaited coroutines into errors.
"""
warnings.simplefilter("error", RuntimeWarning)
# State shared between unraisablehook and check_for_unraisable_exceptions.
unraisable_exceptions = []
orig_unraisablehook = sys.unraisablehook
def unraisablehook(unraisable: "UnraisableHookArgs") -> None:
unraisable_exceptions.append(unraisable.exc_value)
def cleanup() -> None:
"""
A method to be used as a clean-up that fails a test-case if there are any new unraisable exceptions.
"""
sys.unraisablehook = orig_unraisablehook
if unraisable_exceptions:
exc = unraisable_exceptions.pop()
assert exc is not None
raise exc
sys.unraisablehook = unraisablehook
return cleanup
2020-12-02 21:22:01 +03:00
# Type ignore: it does not fully implement IResponse, but is good enough for tests
@zope.interface.implementer(IResponse)
@attr.s(slots=True, frozen=True, auto_attribs=True)
class FakeResponse: # type: ignore[misc]
2020-12-02 21:22:01 +03:00
"""A fake twisted.web.IResponse object
there is a similar class at treq.test.test_response, but it lacks a `phrase`
attribute, and didn't support deliverBody until recently.
"""
version: Tuple[bytes, int, int] = (b"HTTP", 1, 1)
2020-12-02 21:22:01 +03:00
# HTTP response code
code: int = 200
2020-12-02 21:22:01 +03:00
# body of the response
body: bytes = b""
headers: Headers = attr.Factory(Headers)
@property
def phrase(self) -> bytes:
return RESPONSES.get(self.code, b"Unknown Status")
@property
def length(self) -> int:
return len(self.body)
2020-12-02 21:22:01 +03:00
def deliverBody(self, protocol: IProtocol) -> None:
2020-12-02 21:22:01 +03:00
protocol.dataReceived(self.body)
protocol.connectionLost(Failure(ResponseDone()))
@classmethod
def json(cls, *, code: int = 200, payload: JsonSerializable) -> "FakeResponse":
headers = Headers({"Content-Type": ["application/json"]})
body = json.dumps(payload).encode("utf-8")
return cls(code=code, body=body, headers=headers)
# A small image used in some tests.
#
# Resolution: 1×1, MIME type: image/png, Extension: png, Size: 67 B
SMALL_PNG = unhexlify(
b"89504e470d0a1a0a0000000d4948445200000001000000010806"
b"0000001f15c4890000000a49444154789c63000100000500010d"
b"0a2db40000000049454e44ae426082"
)
# A small CMYK-encoded JPEG image used in some tests.
#
# Generated with:
# img = PIL.Image.new('CMYK', (1, 1), (0, 0, 0, 0))
# img.save('minimal_cmyk.jpg', 'JPEG')
#
# Resolution: 1x1, MIME type: image/jpeg, Extension: jpeg, Size: 4 KiB
SMALL_CMYK_JPEG = base64.b64decode("""
/9j/7gAOQWRvYmUAZAAAAAAA/9sAQwAIBgYHBgUIBwcHCQkICgwUDQwLCww
ZEhMPFB0aHx4dGhwcICQuJyAiLCMcHCg3KSwwMTQ0NB8nOT04MjwuMzQy/8
AAFAgAAQABBEMRAE0RAFkRAEsRAP/EAB8AAAEFAQEBAQEBAAAAAAAAAAABA
gMEBQYHCAkKC//EALUQAAIBAwMCBAMFBQQEAAABfQECAwAEEQUSITFBBhNR
YQcicRQygZGhCCNCscEVUtHwJDNicoIJChYXGBkaJSYnKCkqNDU2Nzg5OkN
ERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6g4SFhoeIiYqSk5SVlp
eYmZqio6Slpqeoqaqys7S1tre4ubrCw8TFxsfIycrS09TV1tfY2drh4uPk5
ebn6Onq8fLz9PX29/j5+v/aAA4EQwBNAFkASwAAPwD3+vf69/r3+v/Z
""")