57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
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###############################################################################
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#
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# The MIT License (MIT)
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#
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# Copyright (c) Crossbar.io Technologies GmbH
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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###############################################################################
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import txaio
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from contextlib import contextmanager
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@contextmanager
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def replace_loop(new_loop):
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"""
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This is a context-manager that sets the txaio event-loop to the
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one supplied temporarily. It's up to you to ensure you pass an
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event_loop or a reactor instance depending upon asyncio/Twisted.
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Use like so:
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.. sourcecode:: python
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from twisted.internet import task
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with replace_loop(task.Clock()) as fake_reactor:
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f = txaio.call_later(5, foo)
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fake_reactor.advance(10)
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# ...etc
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"""
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# setup
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orig = txaio.config.loop
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txaio.config.loop = new_loop
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yield new_loop
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# cleanup
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txaio.config.loop = orig
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