| # Copyright 2015, Google Inc. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
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| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following disclaimer |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
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| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| """A utility useful in tests of asynchronous, event-driven interfaces.""" |
| |
| import threading |
| |
| from grpc.framework.interfaces.face import face |
| |
| |
| class Receiver(face.ResponseReceiver): |
| """A utility object useful in tests of asynchronous code.""" |
| |
| def __init__(self): |
| self._condition = threading.Condition() |
| self._initial_metadata = None |
| self._responses = [] |
| self._terminal_metadata = None |
| self._code = None |
| self._details = None |
| self._completed = False |
| self._abortion = None |
| |
| def abort(self, abortion): |
| with self._condition: |
| self._abortion = abortion |
| self._condition.notify_all() |
| |
| def initial_metadata(self, initial_metadata): |
| with self._condition: |
| self._initial_metadata = initial_metadata |
| |
| def response(self, response): |
| with self._condition: |
| self._responses.append(response) |
| |
| def complete(self, terminal_metadata, code, details): |
| with self._condition: |
| self._terminal_metadata = terminal_metadata |
| self._code = code |
| self._details = details |
| self._completed = True |
| self._condition.notify_all() |
| |
| def block_until_terminated(self): |
| with self._condition: |
| while self._abortion is None and not self._completed: |
| self._condition.wait() |
| |
| def unary_response(self): |
| with self._condition: |
| if self._abortion is not None: |
| raise AssertionError('Aborted: "{}"!'.format(self._abortion)) |
| elif len(self._responses) != 1: |
| raise AssertionError( |
| '%d responses received, not exactly one!', len(self._responses)) |
| else: |
| return self._responses[0] |
| |
| def stream_responses(self): |
| with self._condition: |
| if self._abortion is None: |
| return list(self._responses) |
| else: |
| raise AssertionError('Aborted: "{}"!'.format(self._abortion)) |
| |
| def abortion(self): |
| with self._condition: |
| return self._abortion |