1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# 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 json
import sys
import warnings
from binascii import unhexlify
from typing import TYPE_CHECKING, Awaitable, Callable, Tuple, TypeVar
import attr
import zope.interface
from twisted.internet.interfaces import IProtocol
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
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
# 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]
"""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)
# HTTP response code
code: int = 200
# 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)
def deliverBody(self, protocol: IProtocol) -> None:
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"
)
|
