39 lines
1.2 KiB
Python
39 lines
1.2 KiB
Python
# Copyright 2019 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import sys
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from typing import cast
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from synapse.types import ISynapseReactor
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try:
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from twisted.internet.epollreactor import EPollReactor as Reactor
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except ImportError:
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from twisted.internet.pollreactor import PollReactor as Reactor # type: ignore[assignment]
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from twisted.internet.main import installReactor
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def make_reactor() -> ISynapseReactor:
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"""
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Instantiate and install a Twisted reactor suitable for testing (i.e. not the
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default global one).
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"""
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reactor = Reactor()
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if "twisted.internet.reactor" in sys.modules:
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del sys.modules["twisted.internet.reactor"]
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installReactor(reactor)
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return cast(ISynapseReactor, reactor)
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