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# -*- coding: utf-8 -*-
# Copyright 2019 New Vector Ltd
# Copyright 2020 The Matrix.org Foundation C.I.C
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Utilities for running the unit tests
"""
from typing import Awaitable, TypeVar
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")
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