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Diffstat (limited to 'src/python/grpcio/tests/unit/framework/foundation/stream_testing.py')
-rw-r--r-- | src/python/grpcio/tests/unit/framework/foundation/stream_testing.py | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/python/grpcio/tests/unit/framework/foundation/stream_testing.py b/src/python/grpcio/tests/unit/framework/foundation/stream_testing.py new file mode 100644 index 0000000000..098a53d5e7 --- /dev/null +++ b/src/python/grpcio/tests/unit/framework/foundation/stream_testing.py @@ -0,0 +1,73 @@ +# 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: +# +# * Redistributions of source code must retain the above copyright +# 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 +# contributors may be used to endorse or promote products derived from +# 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 +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +"""Utilities for testing stream-related code.""" + +from grpc.framework.foundation import stream + + +class TestConsumer(stream.Consumer): + """A stream.Consumer instrumented for testing. + + Attributes: + calls: A sequence of value-termination pairs describing the history of calls + made on this object. + """ + + def __init__(self): + self.calls = [] + + def consume(self, value): + """See stream.Consumer.consume for specification.""" + self.calls.append((value, False)) + + def terminate(self): + """See stream.Consumer.terminate for specification.""" + self.calls.append((None, True)) + + def consume_and_terminate(self, value): + """See stream.Consumer.consume_and_terminate for specification.""" + self.calls.append((value, True)) + + def is_legal(self): + """Reports whether or not a legal sequence of calls has been made.""" + terminated = False + for value, terminal in self.calls: + if terminated: + return False + elif terminal: + terminated = True + elif value is None: + return False + else: # pylint: disable=useless-else-on-loop + return True + + def values(self): + """Returns the sequence of values that have been passed to this Consumer.""" + return [value for value, _ in self.calls if value] |