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diff --git a/src/python/grpcio_tests/tests/unit/beta/_implementations_test.py b/src/python/grpcio_tests/tests/unit/beta/_implementations_test.py
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+# Copyright 2016, 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.
+
+"""Tests the implementations module of the gRPC Python Beta API."""
+
+import datetime
+import unittest
+
+from oauth2client import client as oauth2client_client
+
+from grpc.beta import implementations
+from tests.unit import resources
+
+
+class ChannelCredentialsTest(unittest.TestCase):
+
+  def test_runtime_provided_root_certificates(self):
+    channel_credentials = implementations.ssl_channel_credentials()
+    self.assertIsInstance(
+        channel_credentials, implementations.ChannelCredentials)
+  
+  def test_application_provided_root_certificates(self):
+    channel_credentials = implementations.ssl_channel_credentials(
+        resources.test_root_certificates())
+    self.assertIsInstance(
+        channel_credentials, implementations.ChannelCredentials)
+
+
+class CallCredentialsTest(unittest.TestCase):
+
+  def test_google_call_credentials(self):
+    creds = oauth2client_client.GoogleCredentials(
+        'token', 'client_id', 'secret', 'refresh_token',
+        datetime.datetime(2008, 6, 24), 'https://refresh.uri.com/',
+        'user_agent')
+    call_creds = implementations.google_call_credentials(creds)
+    self.assertIsInstance(call_creds, implementations.CallCredentials)
+
+  def test_access_token_call_credentials(self):
+    call_creds = implementations.access_token_call_credentials('token')
+    self.assertIsInstance(call_creds, implementations.CallCredentials)
+
+if __name__ == '__main__':
+  unittest.main(verbosity=2)