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diff --git a/src/python/_framework/face/testing/event_invocation_synchronous_event_service_test_case.py b/src/python/_framework/face/testing/event_invocation_synchronous_event_service_test_case.py
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+++ b/src/python/_framework/face/testing/event_invocation_synchronous_event_service_test_case.py
@@ -0,0 +1,367 @@
+# 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.
+
+"""A test to verify an implementation of the Face layer of RPC Framework."""
+
+import abc
+import unittest
+
+from _framework.face import interfaces
+from _framework.face.testing import callback as testing_callback
+from _framework.face.testing import control
+from _framework.face.testing import coverage
+from _framework.face.testing import digest
+from _framework.face.testing import stock_service
+from _framework.face.testing import test_case
+
+_TIMEOUT = 3
+
+
+class EventInvocationSynchronousEventServiceTestCase(
+    test_case.FaceTestCase, coverage.FullCoverage):
+  """A test of the Face layer of RPC Framework.
+
+  Concrete subclasses must also extend unittest.TestCase.
+  """
+  __metaclass__ = abc.ABCMeta
+
+  def setUp(self):
+    """See unittest.TestCase.setUp for full specification.
+
+    Overriding implementations must call this implementation.
+    """
+    self.control = control.PauseFailControl()
+    self.digest = digest.digest(
+        stock_service.STOCK_TEST_SERVICE, self.control, None)
+
+    self.server, self.stub, self.memo = self.set_up_implementation(
+        self.digest.name, self.digest.methods,
+        {}, {}, {}, {},
+        self.digest.event_unary_unary_methods,
+        self.digest.event_unary_stream_methods,
+        self.digest.event_stream_unary_methods,
+        self.digest.event_stream_stream_methods,
+        None)
+
+  def tearDown(self):
+    """See unittest.TestCase.tearDown for full specification.
+
+    Overriding implementations must call this implementation.
+    """
+    self.tear_down_implementation(self.memo)
+
+  def testSuccessfulUnaryRequestUnaryResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.unary_unary_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        request = test_messages.request()
+        callback = testing_callback.Callback()
+
+        self.stub.event_value_in_value_out(
+            name, request, callback.complete, callback.abort, _TIMEOUT)
+        callback.block_until_terminated()
+        response = callback.response()
+
+        test_messages.verify(request, response, self)
+
+  def testSuccessfulUnaryRequestStreamResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.unary_stream_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        request = test_messages.request()
+        callback = testing_callback.Callback()
+
+        self.stub.event_value_in_stream_out(
+            name, request, callback, callback.abort, _TIMEOUT)
+        callback.block_until_terminated()
+        responses = callback.responses()
+
+        test_messages.verify(request, responses, self)
+
+  def testSuccessfulStreamRequestUnaryResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.stream_unary_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        requests = test_messages.requests()
+        callback = testing_callback.Callback()
+
+        unused_call, request_consumer = self.stub.event_stream_in_value_out(
+            name, callback.complete, callback.abort, _TIMEOUT)
+        for request in requests:
+          request_consumer.consume(request)
+        request_consumer.terminate()
+        callback.block_until_terminated()
+        response = callback.response()
+
+        test_messages.verify(requests, response, self)
+
+  def testSuccessfulStreamRequestStreamResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.stream_stream_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        requests = test_messages.requests()
+        callback = testing_callback.Callback()
+
+        unused_call, request_consumer = self.stub.event_stream_in_stream_out(
+            name, callback, callback.abort, _TIMEOUT)
+        for request in requests:
+          request_consumer.consume(request)
+        request_consumer.terminate()
+        callback.block_until_terminated()
+        responses = callback.responses()
+
+        test_messages.verify(requests, responses, self)
+
+  def testSequentialInvocations(self):
+    # pylint: disable=cell-var-from-loop
+    for name, test_messages_sequence in (
+        self.digest.unary_unary_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        first_request = test_messages.request()
+        second_request = test_messages.request()
+        first_callback = testing_callback.Callback()
+        second_callback = testing_callback.Callback()
+
+        def make_second_invocation(first_response):
+          first_callback.complete(first_response)
+          self.stub.event_value_in_value_out(
+              name, second_request, second_callback.complete,
+              second_callback.abort, _TIMEOUT)
+
+        self.stub.event_value_in_value_out(
+            name, first_request, make_second_invocation, first_callback.abort,
+            _TIMEOUT)
+        second_callback.block_until_terminated()
+
+        first_response = first_callback.response()
+        second_response = second_callback.response()
+        test_messages.verify(first_request, first_response, self)
+        test_messages.verify(second_request, second_response, self)
+
+  def testExpiredUnaryRequestUnaryResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.unary_unary_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        request = test_messages.request()
+        callback = testing_callback.Callback()
+
+        with self.control.pause():
+          self.stub.event_value_in_value_out(
+              name, request, callback.complete, callback.abort, _TIMEOUT)
+          callback.block_until_terminated()
+
+        self.assertEqual(interfaces.EXPIRED, callback.abortion())
+
+  def testExpiredUnaryRequestStreamResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.unary_stream_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        request = test_messages.request()
+        callback = testing_callback.Callback()
+
+        with self.control.pause():
+          self.stub.event_value_in_stream_out(
+              name, request, callback, callback.abort, _TIMEOUT)
+          callback.block_until_terminated()
+
+        self.assertEqual(interfaces.EXPIRED, callback.abortion())
+
+  def testExpiredStreamRequestUnaryResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.stream_unary_messages_sequences.iteritems()):
+      for unused_test_messages in test_messages_sequence:
+        callback = testing_callback.Callback()
+
+        self.stub.event_stream_in_value_out(
+            name, callback.complete, callback.abort, _TIMEOUT)
+        callback.block_until_terminated()
+
+        self.assertEqual(interfaces.EXPIRED, callback.abortion())
+
+  def testExpiredStreamRequestStreamResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.stream_stream_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        requests = test_messages.requests()
+        callback = testing_callback.Callback()
+
+        unused_call, request_consumer = self.stub.event_stream_in_stream_out(
+            name, callback, callback.abort, _TIMEOUT)
+        for request in requests:
+          request_consumer.consume(request)
+        callback.block_until_terminated()
+
+        self.assertEqual(interfaces.EXPIRED, callback.abortion())
+
+  def testFailedUnaryRequestUnaryResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.unary_unary_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        request = test_messages.request()
+        callback = testing_callback.Callback()
+
+        with self.control.fail():
+          self.stub.event_value_in_value_out(
+              name, request, callback.complete, callback.abort, _TIMEOUT)
+          callback.block_until_terminated()
+
+        self.assertEqual(interfaces.SERVICER_FAILURE, callback.abortion())
+
+  def testFailedUnaryRequestStreamResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.unary_stream_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        request = test_messages.request()
+        callback = testing_callback.Callback()
+
+        with self.control.fail():
+          self.stub.event_value_in_stream_out(
+              name, request, callback, callback.abort, _TIMEOUT)
+          callback.block_until_terminated()
+
+        self.assertEqual(interfaces.SERVICER_FAILURE, callback.abortion())
+
+  def testFailedStreamRequestUnaryResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.stream_unary_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        requests = test_messages.requests()
+        callback = testing_callback.Callback()
+
+        with self.control.fail():
+          unused_call, request_consumer = self.stub.event_stream_in_value_out(
+              name, callback.complete, callback.abort, _TIMEOUT)
+          for request in requests:
+            request_consumer.consume(request)
+          request_consumer.terminate()
+          callback.block_until_terminated()
+
+        self.assertEqual(interfaces.SERVICER_FAILURE, callback.abortion())
+
+  def testFailedStreamRequestStreamResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.stream_stream_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        requests = test_messages.requests()
+        callback = testing_callback.Callback()
+
+        with self.control.fail():
+          unused_call, request_consumer = self.stub.event_stream_in_stream_out(
+              name, callback, callback.abort, _TIMEOUT)
+          for request in requests:
+            request_consumer.consume(request)
+          request_consumer.terminate()
+          callback.block_until_terminated()
+
+        self.assertEqual(interfaces.SERVICER_FAILURE, callback.abortion())
+
+  def testParallelInvocations(self):
+    for name, test_messages_sequence in (
+        self.digest.unary_unary_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        first_request = test_messages.request()
+        first_callback = testing_callback.Callback()
+        second_request = test_messages.request()
+        second_callback = testing_callback.Callback()
+
+        self.stub.event_value_in_value_out(
+            name, first_request, first_callback.complete, first_callback.abort,
+            _TIMEOUT)
+        self.stub.event_value_in_value_out(
+            name, second_request, second_callback.complete,
+            second_callback.abort, _TIMEOUT)
+        first_callback.block_until_terminated()
+        second_callback.block_until_terminated()
+
+        first_response = first_callback.response()
+        second_response = second_callback.response()
+        test_messages.verify(first_request, first_response, self)
+        test_messages.verify(second_request, second_response, self)
+
+  @unittest.skip('TODO(nathaniel): implement.')
+  def testWaitingForSomeButNotAllParallelInvocations(self):
+    raise NotImplementedError()
+
+  def testCancelledUnaryRequestUnaryResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.unary_unary_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        request = test_messages.request()
+        callback = testing_callback.Callback()
+
+        with self.control.pause():
+          call = self.stub.event_value_in_value_out(
+              name, request, callback.complete, callback.abort, _TIMEOUT)
+          call.cancel()
+          callback.block_until_terminated()
+
+        self.assertEqual(interfaces.CANCELLED, callback.abortion())
+
+  def testCancelledUnaryRequestStreamResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.unary_stream_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        request = test_messages.request()
+        callback = testing_callback.Callback()
+
+        call = self.stub.event_value_in_stream_out(
+            name, request, callback, callback.abort, _TIMEOUT)
+        call.cancel()
+        callback.block_until_terminated()
+
+        self.assertEqual(interfaces.CANCELLED, callback.abortion())
+
+  def testCancelledStreamRequestUnaryResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.stream_unary_messages_sequences.iteritems()):
+      for test_messages in test_messages_sequence:
+        requests = test_messages.requests()
+        callback = testing_callback.Callback()
+
+        call, request_consumer = self.stub.event_stream_in_value_out(
+            name, callback.complete, callback.abort, _TIMEOUT)
+        for request in requests:
+          request_consumer.consume(request)
+        call.cancel()
+        callback.block_until_terminated()
+
+        self.assertEqual(interfaces.CANCELLED, callback.abortion())
+
+  def testCancelledStreamRequestStreamResponse(self):
+    for name, test_messages_sequence in (
+        self.digest.stream_stream_messages_sequences.iteritems()):
+      for unused_test_messages in test_messages_sequence:
+        callback = testing_callback.Callback()
+
+        call, unused_request_consumer = self.stub.event_stream_in_stream_out(
+            name, callback, callback.abort, _TIMEOUT)
+        call.cancel()
+        callback.block_until_terminated()
+
+        self.assertEqual(interfaces.CANCELLED, callback.abortion())