Merge branch 'master' of github.com:grpc/grpc into bb_reader_error

133 files changed, 789 insertions, 538 deletions

diff --git a/src/core/ext/resolver/zookeeper/README.md b/src/core/ext/resolver/zookeeper/README.md
deleted file mode 100644
index ce6f39683b..0000000000
--- a/src/core/ext/resolver/zookeeper/README.md
+++ /dev/null
@@ -1 +0,0 @@
-Zookeeper based name resolver: WIP
diff --git a/src/core/lib/channel/channel_stack.c b/src/core/lib/channel/channel_stack.c
index 42075b127b..87175d7943 100644
--- a/src/core/lib/channel/channel_stack.c
+++ b/src/core/lib/channel/channel_stack.c
@@ -266,3 +266,14 @@ void grpc_call_element_send_cancel(grpc_exec_ctx *exec_ctx,
   op.cancel_error = GRPC_ERROR_CANCELLED;
   grpc_call_next_op(exec_ctx, cur_elem, &op);
 }
+
+void grpc_call_element_send_cancel_with_message(grpc_exec_ctx *exec_ctx,
+                                                grpc_call_element *cur_elem,
+                                                grpc_status_code status,
+                                                gpr_slice *optional_message) {
+  grpc_transport_stream_op op;
+  memset(&op, 0, sizeof(op));
+  grpc_transport_stream_op_add_cancellation_with_message(&op, status,
+                                                         optional_message);
+  grpc_call_next_op(exec_ctx, cur_elem, &op);
+}
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index 41dd4a0d8a..d72c015b67 100644
--- a/src/core/lib/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -273,6 +273,11 @@ void grpc_call_log_op(char *file, int line, gpr_log_severity severity,
 void grpc_call_element_send_cancel(grpc_exec_ctx *exec_ctx,
                                    grpc_call_element *cur_elem);
 
+void grpc_call_element_send_cancel_with_message(grpc_exec_ctx *exec_ctx,
+                                                grpc_call_element *cur_elem,
+                                                grpc_status_code status,
+                                                gpr_slice *optional_message);
+
 extern int grpc_trace_channel;
 
 #define GRPC_CALL_LOG_OP(sev, elem, op) \
diff --git a/src/core/lib/channel/http_client_filter.c b/src/core/lib/channel/http_client_filter.c
index ab6c6c9ef0..8057e251f0 100644
--- a/src/core/lib/channel/http_client_filter.c
+++ b/src/core/lib/channel/http_client_filter.c
@@ -76,7 +76,13 @@ static grpc_mdelem *client_recv_filter(void *user_data, grpc_mdelem *md) {
   if (md == GRPC_MDELEM_STATUS_200) {
     return NULL;
   } else if (md->key == GRPC_MDSTR_STATUS) {
-    grpc_call_element_send_cancel(a->exec_ctx, a->elem);
+    char *message_string;
+    gpr_asprintf(&message_string, "Received http2 header with status: %s",
+                 grpc_mdstr_as_c_string(md->value));
+    gpr_slice message = gpr_slice_from_copied_string(message_string);
+    gpr_free(message_string);
+    grpc_call_element_send_cancel_with_message(a->exec_ctx, a->elem,
+                                               GRPC_STATUS_CANCELLED, &message);
     return NULL;
   } else if (md == GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC) {
     return NULL;
diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index 708ea3502a..e5668be47f 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -1206,7 +1206,7 @@ static void validate_filtered_metadata(grpc_exec_ctx *exec_ctx,
     } else if (grpc_compression_options_is_algorithm_enabled(
                    &compression_options, algo) == 0) {
       /* check if algorithm is supported by current channel config */
-      char *algo_name;
+      char *algo_name = NULL;
       grpc_compression_algorithm_name(algo, &algo_name);
       gpr_asprintf(&error_msg, "Compression algorithm '%s' is disabled.",
                    algo_name);
@@ -1225,7 +1225,7 @@ static void validate_filtered_metadata(grpc_exec_ctx *exec_ctx,
                   call->incoming_compression_algorithm)) {
     extern int grpc_compression_trace;
     if (grpc_compression_trace) {
-      char *algo_name;
+      char *algo_name = NULL;
       grpc_compression_algorithm_name(call->incoming_compression_algorithm,
                                       &algo_name);
       gpr_log(GPR_ERROR,
@@ -1426,7 +1426,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
           const grpc_compression_algorithm calgo =
               compression_algorithm_for_level_locked(
                   call, effective_compression_level);
-          char *calgo_name;
+          char *calgo_name = NULL;
           grpc_compression_algorithm_name(calgo, &calgo_name);
           // the following will be picked up by the compress filter and used as
           // the call's compression algorithm.
diff --git a/src/core/lib/transport/transport.c b/src/core/lib/transport/transport.c
index f8ddf5774a..857c3909d2 100644
--- a/src/core/lib/transport/transport.c
+++ b/src/core/lib/transport/transport.c
@@ -199,6 +199,30 @@ void grpc_transport_stream_op_add_cancellation(grpc_transport_stream_op *op,
   }
 }
 
+void grpc_transport_stream_op_add_cancellation_with_message(
+    grpc_transport_stream_op *op, grpc_status_code status,
+    gpr_slice *optional_message) {
+  GPR_ASSERT(status != GRPC_STATUS_OK);
+  if (op->cancel_error != GRPC_ERROR_NONE) {
+    if (optional_message) {
+      gpr_slice_unref(*optional_message);
+    }
+    return;
+  }
+  grpc_error *error;
+  if (optional_message != NULL) {
+    char *msg = gpr_dump_slice(*optional_message, GPR_DUMP_ASCII);
+    error = grpc_error_set_str(GRPC_ERROR_CREATE(msg),
+                               GRPC_ERROR_STR_GRPC_MESSAGE, msg);
+    gpr_free(msg);
+    gpr_slice_unref(*optional_message);
+  } else {
+    error = GRPC_ERROR_CREATE("Call cancelled");
+  }
+  error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS, status);
+  add_error(op, &op->close_error, error);
+}
+
 void grpc_transport_stream_op_add_close(grpc_transport_stream_op *op,
                                         grpc_status_code status,
                                         gpr_slice *optional_message) {
diff --git a/src/core/lib/transport/transport.h b/src/core/lib/transport/transport.h
index d2f6344ee3..08c0a237c9 100644
--- a/src/core/lib/transport/transport.h
+++ b/src/core/lib/transport/transport.h
@@ -221,6 +221,10 @@ void grpc_transport_stream_op_finish_with_failure(grpc_exec_ctx *exec_ctx,
 void grpc_transport_stream_op_add_cancellation(grpc_transport_stream_op *op,
                                                grpc_status_code status);
 
+void grpc_transport_stream_op_add_cancellation_with_message(
+    grpc_transport_stream_op *op, grpc_status_code status,
+    gpr_slice *optional_message);
+
 void grpc_transport_stream_op_add_close(grpc_transport_stream_op *op,
                                         grpc_status_code status,
                                         gpr_slice *optional_message);
diff --git a/src/python/grpcio/.gitignore b/src/python/grpcio/.gitignore
index 6e5e65096c..7cd8fab273 100644
--- a/src/python/grpcio/.gitignore
+++ b/src/python/grpcio/.gitignore
@@ -9,7 +9,6 @@ dist/
 .coverage
 .coverage.*
 .cache/
-.tox/
 nosetests.xml
 doc/
 _grpcio_metadata.py
diff --git a/src/python/grpcio/commands.py b/src/python/grpcio/commands.py
index f498ed4190..3f91954d5f 100644
--- a/src/python/grpcio/commands.py
+++ b/src/python/grpcio/commands.py
@@ -134,75 +134,6 @@ class SphinxDocumentation(setuptools.Command):
     sphinx.main(['', os.path.join('doc', 'src'), os.path.join('doc', 'build')])
 
 
-class BuildProtoModules(setuptools.Command):
-  """Command to generate project *_pb2.py modules from proto files."""
-
-  description = 'build protobuf modules'
-  user_options = [
-    ('include=', None, 'path patterns to include in protobuf generation'),
-    ('exclude=', None, 'path patterns to exclude from protobuf generation')
-  ]
-
-  def initialize_options(self):
-    self.exclude = None
-    self.include = r'.*\.proto$'
-    self.protoc_command = None
-    self.grpc_python_plugin_command = None
-
-  def finalize_options(self):
-    self.protoc_command = distutils.spawn.find_executable('protoc')
-    self.grpc_python_plugin_command = distutils.spawn.find_executable(
-        'grpc_python_plugin')
-
-  def run(self):
-    if not self.protoc_command:
-      raise CommandError('could not find protoc')
-    if not self.grpc_python_plugin_command:
-      raise CommandError('could not find grpc_python_plugin '
-                         '(protoc plugin for GRPC Python)')
-
-    if not os.path.exists(PROTO_GEN_STEM):
-      os.makedirs(PROTO_GEN_STEM)
-
-    include_regex = re.compile(self.include)
-    exclude_regex = re.compile(self.exclude) if self.exclude else None
-    paths = []
-    for walk_root, directories, filenames in os.walk(PROTO_STEM):
-      for filename in filenames:
-        path = os.path.join(walk_root, filename)
-        if include_regex.match(path) and not (
-            exclude_regex and exclude_regex.match(path)):
-          paths.append(path)
-
-    # TODO(kpayson): It would be nice to do this in a batch command,
-    # but we currently have name conflicts in src/proto
-    for path in paths:
-      command = [
-          self.protoc_command,
-          '--plugin=protoc-gen-python-grpc={}'.format(
-              self.grpc_python_plugin_command),
-          '-I {}'.format(GRPC_STEM),
-          '-I .',
-          '-I {}/third_party/protobuf/src'.format(GRPC_STEM),
-          '--python_out={}'.format(PROTO_GEN_STEM),
-          '--python-grpc_out={}'.format(PROTO_GEN_STEM),
-      ] + [path]
-      try:
-        subprocess.check_output(' '.join(command), cwd=PYTHON_STEM, shell=True,
-                                stderr=subprocess.STDOUT)
-      except subprocess.CalledProcessError as e:
-        sys.stderr.write(
-            'warning: Command:\n{}\nMessage:\n{}\nOutput:\n{}'.format(
-                command, str(e), e.output))
-
-    # Generated proto directories dont include __init__.py, but
-    # these are needed for python package resolution
-    for walk_root, _, _ in os.walk(PROTO_GEN_STEM):
-      if walk_root != PROTO_GEN_STEM:
-        path = os.path.join(walk_root, '__init__.py')
-        open(path, 'a').close()
-
-
 class BuildProjectMetadata(setuptools.Command):
   """Command to generate project metadata in a module."""
 
@@ -225,10 +156,6 @@ class BuildPy(build_py.build_py):
   """Custom project build command."""
 
   def run(self):
-    try:
-      self.run_command('build_proto_modules')
-    except CommandError as error:
-      sys.stderr.write('warning: %s\n' % error.message)
     self.run_command('build_project_metadata')
     build_py.build_py.run(self)
 
@@ -281,76 +208,3 @@ class Gather(setuptools.Command):
       self.distribution.fetch_build_eggs(self.distribution.install_requires)
     if self.test and self.distribution.tests_require:
       self.distribution.fetch_build_eggs(self.distribution.tests_require)
-
-
-class TestLite(setuptools.Command):
-  """Command to run tests without fetching or building anything."""
-
-  description = 'run tests without fetching or building anything.'
-  user_options = []
-
-  def initialize_options(self):
-    pass
-
-  def finalize_options(self):
-    # distutils requires this override.
-    pass
-
-  def run(self):
-    self._add_eggs_to_path()
-
-    import tests
-    loader = tests.Loader()
-    loader.loadTestsFromNames(['tests'])
-    runner = tests.Runner()
-    result = runner.run(loader.suite)
-    if not result.wasSuccessful():
-      sys.exit('Test failure')
-
-  def _add_eggs_to_path(self):
-    """Fetch install and test requirements"""
-    self.distribution.fetch_build_eggs(self.distribution.install_requires)
-    self.distribution.fetch_build_eggs(self.distribution.tests_require)
-
-
-class RunInterop(test.test):
-
-  description = 'run interop test client/server'
-  user_options = [
-    ('args=', 'a', 'pass-thru arguments for the client/server'),
-    ('client', 'c', 'flag indicating to run the client'),
-    ('server', 's', 'flag indicating to run the server')
-  ]
-
-  def initialize_options(self):
-    self.args = ''
-    self.client = False
-    self.server = False
-
-  def finalize_options(self):
-    if self.client and self.server:
-      raise DistutilsOptionError('you may only specify one of client or server')
-
-  def run(self):
-    if self.distribution.install_requires:
-      self.distribution.fetch_build_eggs(self.distribution.install_requires)
-    if self.distribution.tests_require:
-      self.distribution.fetch_build_eggs(self.distribution.tests_require)
-    if self.client:
-      self.run_client()
-    elif self.server:
-      self.run_server()
-
-  def run_server(self):
-    # We import here to ensure that our setuptools parent has had a chance to
-    # edit the Python system path.
-    from tests.interop import server
-    sys.argv[1:] = self.args.split()
-    server.serve()
-
-  def run_client(self):
-    # We import here to ensure that our setuptools parent has had a chance to
-    # edit the Python system path.
-    from tests.interop import client
-    sys.argv[1:] = self.args.split()
-    client.test_interoperability()
diff --git a/src/python/grpcio_health_checking/health_commands.py b/src/python/grpcio_health_checking/health_commands.py
index 631066f331..a7a59f6974 100644
--- a/src/python/grpcio_health_checking/health_commands.py
+++ b/src/python/grpcio_health_checking/health_commands.py
@@ -39,14 +39,13 @@ import sys
 
 import setuptools
 from setuptools.command import build_py
-from setuptools.command import sdist
 
 ROOT_DIR = os.path.abspath(os.path.dirname(os.path.abspath(__file__)))
 HEALTH_PROTO = os.path.join(ROOT_DIR, '../../proto/grpc/health/v1/health.proto')
 
 
-class BuildProtoModules(setuptools.Command):
-  """Command to generate project *_pb2.py modules from proto files."""
+class CopyProtoModules(setuptools.Command):
+  """Command to copy proto modules from grpc/src/proto."""
 
   description = ''
   user_options = []
@@ -55,39 +54,6 @@ class BuildProtoModules(setuptools.Command):
     pass
 
   def finalize_options(self):
-    self.protoc_command = distutils.spawn.find_executable('protoc')
-    self.grpc_python_plugin_command = distutils.spawn.find_executable(
-        'grpc_python_plugin')
-
-  def run(self):
-    paths = []
-    root_directory = os.getcwd()
-    for walk_root, directories, filenames in os.walk(root_directory):
-      for filename in filenames:
-        if filename.endswith('.proto'):
-          paths.append(os.path.join(walk_root, filename))
-    command = [
-        self.protoc_command,
-        '--plugin=protoc-gen-python-grpc={}'.format(
-            self.grpc_python_plugin_command),
-        '-I {}'.format(root_directory),
-        '--python_out={}'.format(root_directory),
-        '--python-grpc_out={}'.format(root_directory),
-    ] + paths
-    try:
-      subprocess.check_output(' '.join(command), cwd=root_directory, shell=True,
-                              stderr=subprocess.STDOUT)
-    except subprocess.CalledProcessError as e:
-      raise Exception('{}\nOutput:\n{}'.format(e.message, e.output))
-
-
-class CopyProtoModules(setuptools.Command):
-  """Command to copy proto modules from grpc/src/proto."""
-
-  def initialize_options(self):
-    pass
-
-  def finalize_options(self):
     pass
 
   def run(self):
@@ -101,14 +67,5 @@ class BuildPy(build_py.build_py):
   """Custom project build command."""
 
   def run(self):
-    self.run_command('copy_proto_modules')
     self.run_command('build_proto_modules')
     build_py.build_py.run(self)
-
-
-class SDist(sdist.sdist):
-  """Custom project build command."""
-
-  def run(self):
-    self.run_command('copy_proto_modules')
-    sdist.sdist.run(self)
diff --git a/src/python/grpcio_health_checking/setup.py b/src/python/grpcio_health_checking/setup.py
index d68a7ced8e..70b4575bf5 100644
--- a/src/python/grpcio_health_checking/setup.py
+++ b/src/python/grpcio_health_checking/setup.py
@@ -36,36 +36,44 @@ import sys
 from distutils import core as _core
 import setuptools
 
+import grpc.tools.command
+
 # Ensure we're in the proper directory whether or not we're being used by pip.
 os.chdir(os.path.dirname(os.path.abspath(__file__)))
 
 # Break import-style to ensure we can actually find our commands module.
 import health_commands
 
-_PACKAGES = (
+PACKAGES = (
     setuptools.find_packages('.')
 )
 
-_PACKAGE_DIRECTORIES = {
+PACKAGE_DIRECTORIES = {
     '': '.',
 }
 
-_INSTALL_REQUIRES = (
+SETUP_REQUIRES = (
+    'grpcio-tools>=0.14.0',
+)
+
+INSTALL_REQUIRES = (
     'grpcio>=0.13.1',
 )
 
-_COMMAND_CLASS = {
-    'copy_proto_modules': health_commands.CopyProtoModules,
-    'build_proto_modules': health_commands.BuildProtoModules,
+COMMAND_CLASS = {
+    # Run preprocess from the repository *before* doing any packaging!
+    'preprocess': health_commands.CopyProtoModules,
+
+    'build_proto_modules': grpc.tools.command.BuildProtoModules,
     'build_py': health_commands.BuildPy,
-    'sdist': health_commands.SDist,
 }
 
 setuptools.setup(
-    name='grpcio_health_checking',
-    version='0.14.0b0',
-    packages=list(_PACKAGES),
-    package_dir=_PACKAGE_DIRECTORIES,
-    install_requires=_INSTALL_REQUIRES,
-    cmdclass=_COMMAND_CLASS
+    name='grpcio-health-checking',
+    version='0.14.0',
+    packages=list(PACKAGES),
+    package_dir=PACKAGE_DIRECTORIES,
+    install_requires=INSTALL_REQUIRES,
+    setup_requires=SETUP_REQUIRES,
+    cmdclass=COMMAND_CLASS
 )
diff --git a/src/python/grpcio_tests/.gitignore b/src/python/grpcio_tests/.gitignore
new file mode 100644
index 0000000000..fc620135dc
--- /dev/null
+++ b/src/python/grpcio_tests/.gitignore
@@ -0,0 +1,4 @@
+proto/
+src/
+*_pb2.py
+*.egg-info/
diff --git a/src/python/grpcio_tests/commands.py b/src/python/grpcio_tests/commands.py
new file mode 100644
index 0000000000..171829b62f
--- /dev/null
+++ b/src/python/grpcio_tests/commands.py
@@ -0,0 +1,217 @@
+# 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.
+
+"""Provides distutils command classes for the gRPC Python setup process."""
+
+import distutils
+import glob
+import os
+import os.path
+import platform
+import re
+import shutil
+import subprocess
+import sys
+import traceback
+
+import setuptools
+from setuptools.command import build_ext
+from setuptools.command import build_py
+from setuptools.command import easy_install
+from setuptools.command import install
+from setuptools.command import test
+
+PYTHON_STEM = os.path.dirname(os.path.abspath(__file__))
+GRPC_STEM = os.path.abspath(PYTHON_STEM + '../../../../')
+GRPC_PROTO_STEM = os.path.join(GRPC_STEM, 'src', 'proto')
+PROTO_STEM = os.path.join(PYTHON_STEM, 'src', 'proto')
+PYTHON_PROTO_TOP_LEVEL = os.path.join(PYTHON_STEM, 'src')
+
+
+class CommandError(object):
+  pass
+
+
+class GatherProto(setuptools.Command):
+
+  description = 'gather proto dependencies'
+  user_options = []
+
+  def initialize_options(self):
+    pass
+
+  def finalize_options(self):
+    pass
+
+  def run(self):
+    # TODO(atash) ensure that we're running from the repository directory when
+    # this command is used
+    try:
+      shutil.rmtree(PROTO_STEM)
+    except Exception as error:
+      # We don't care if this command fails
+      pass
+    shutil.copytree(GRPC_PROTO_STEM, PROTO_STEM)
+    for root, _, _ in os.walk(PYTHON_PROTO_TOP_LEVEL):
+      path = os.path.join(root, '__init__.py')
+      open(path, 'a').close()
+
+
+class BuildProtoModules(setuptools.Command):
+  """Command to generate project *_pb2.py modules from proto files."""
+
+  description = 'build protobuf modules'
+  user_options = [
+    ('include=', None, 'path patterns to include in protobuf generation'),
+    ('exclude=', None, 'path patterns to exclude from protobuf generation')
+  ]
+
+  def initialize_options(self):
+    self.exclude = None
+    self.include = r'.*\.proto$'
+
+  def finalize_options(self):
+    pass
+
+  def run(self):
+    import grpc.tools.protoc as protoc
+
+    include_regex = re.compile(self.include)
+    exclude_regex = re.compile(self.exclude) if self.exclude else None
+    paths = []
+    for walk_root, directories, filenames in os.walk(PROTO_STEM):
+      for filename in filenames:
+        path = os.path.join(walk_root, filename)
+        if include_regex.match(path) and not (
+            exclude_regex and exclude_regex.match(path)):
+          paths.append(path)
+
+    # TODO(kpayson): It would be nice to do this in a batch command,
+    # but we currently have name conflicts in src/proto
+    for path in paths:
+      command = [
+          'grpc.tools.protoc',
+          '-I {}'.format(PROTO_STEM),
+          '--python_out={}'.format(PROTO_STEM),
+          '--grpc_python_out={}'.format(PROTO_STEM),
+      ] + [path]
+      if protoc.main(command) != 0:
+        sys.stderr.write(
+            'warning: Command:\n{}\nFailed'.format(
+                command))
+
+    # Generated proto directories dont include __init__.py, but
+    # these are needed for python package resolution
+    for walk_root, _, _ in os.walk(PROTO_STEM):
+      path = os.path.join(walk_root, '__init__.py')
+      open(path, 'a').close()
+
+
+class BuildPy(build_py.build_py):
+  """Custom project build command."""
+
+  def run(self):
+    try:
+      self.run_command('build_proto_modules')
+    except CommandError as error:
+      sys.stderr.write('warning: %s\n' % error.message)
+    build_py.build_py.run(self)
+
+
+class TestLite(setuptools.Command):
+  """Command to run tests without fetching or building anything."""
+
+  description = 'run tests without fetching or building anything.'
+  user_options = []
+
+  def initialize_options(self):
+    pass
+
+  def finalize_options(self):
+    # distutils requires this override.
+    pass
+
+  def run(self):
+    self._add_eggs_to_path()
+
+    import tests
+    loader = tests.Loader()
+    loader.loadTestsFromNames(['tests'])
+    runner = tests.Runner()
+    result = runner.run(loader.suite)
+    if not result.wasSuccessful():
+      sys.exit('Test failure')
+
+  def _add_eggs_to_path(self):
+    """Fetch install and test requirements"""
+    self.distribution.fetch_build_eggs(self.distribution.install_requires)
+    self.distribution.fetch_build_eggs(self.distribution.tests_require)
+
+
+class RunInterop(test.test):
+
+  description = 'run interop test client/server'
+  user_options = [
+    ('args=', 'a', 'pass-thru arguments for the client/server'),
+    ('client', 'c', 'flag indicating to run the client'),
+    ('server', 's', 'flag indicating to run the server')
+  ]
+
+  def initialize_options(self):
+    self.args = ''
+    self.client = False
+    self.server = False
+
+  def finalize_options(self):
+    if self.client and self.server:
+      raise DistutilsOptionError('you may only specify one of client or server')
+
+  def run(self):
+    if self.distribution.install_requires:
+      self.distribution.fetch_build_eggs(self.distribution.install_requires)
+    if self.distribution.tests_require:
+      self.distribution.fetch_build_eggs(self.distribution.tests_require)
+    if self.client:
+      self.run_client()
+    elif self.server:
+      self.run_server()
+
+  def run_server(self):
+    # We import here to ensure that our setuptools parent has had a chance to
+    # edit the Python system path.
+    from tests.interop import server
+    sys.argv[1:] = self.args.split()
+    server.serve()
+
+  def run_client(self):
+    # We import here to ensure that our setuptools parent has had a chance to
+    # edit the Python system path.
+    from tests.interop import client
+    sys.argv[1:] = self.args.split()
+    client.test_interoperability()
diff --git a/src/python/grpcio_tests/grpc_version.py b/src/python/grpcio_tests/grpc_version.py
new file mode 100644
index 0000000000..7aa600728a
--- /dev/null
+++ b/src/python/grpcio_tests/grpc_version.py
@@ -0,0 +1,32 @@
+# 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.
+
+# AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_tests/grpc_version.py.template`!!!
+
+VERSION='0.16.0.dev0'
diff --git a/src/python/grpcio_tests/setup.py b/src/python/grpcio_tests/setup.py
new file mode 100644
index 0000000000..7eef420bdb
--- /dev/null
+++ b/src/python/grpcio_tests/setup.py
@@ -0,0 +1,124 @@
+# 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 setup module for the gRPC Python package."""
+
+import os
+import os.path
+import shutil
+import sys
+
+from distutils import core as _core
+from distutils import extension as _extension
+import setuptools
+from setuptools.command import egg_info
+
+import grpc.tools.command
+
+PY3 = sys.version_info.major == 3
+
+# Ensure we're in the proper directory whether or not we're being used by pip.
+os.chdir(os.path.dirname(os.path.abspath(__file__)))
+
+# Break import-style to ensure we can actually find our in-repo dependencies.
+import commands
+import grpc_version
+
+LICENSE = '3-clause BSD'
+
+PACKAGE_DIRECTORIES = {
+    '': '.',
+}
+
+INSTALL_REQUIRES = (
+    'coverage>=4.0',
+    'enum34>=1.0.4',
+    'futures>=2.2.0',
+    'grpcio>=0.14.0',
+    'grpcio-health-checking>=0.14.0',
+    'oauth2client>=1.4.7',
+    'protobuf>=3.0.0a3',
+    'six>=1.10',
+)
+
+SETUP_REQUIRES = (
+    'grpcio-tools>=0.14.0',
+)
+
+COMMAND_CLASS = {
+    # Run `preprocess` *before* doing any packaging!
+    'preprocess': commands.GatherProto,
+
+    'build_proto_modules': grpc.tools.command.BuildProtoModules,
+    'build_py': commands.BuildPy,
+    'run_interop': commands.RunInterop,
+    'test_lite': commands.TestLite
+}
+
+PACKAGE_DATA = {
+    'tests.interop': [
+        'credentials/ca.pem',
+        'credentials/server1.key',
+        'credentials/server1.pem',
+    ],
+    'tests.protoc_plugin': [
+        'protoc_plugin_test.proto',
+    ],
+    'tests.unit': [
+        'credentials/ca.pem',
+        'credentials/server1.key',
+        'credentials/server1.pem',
+    ],
+    'tests': [
+        'tests.json'
+    ],
+}
+
+TEST_SUITE = 'tests'
+TEST_LOADER = 'tests:Loader'
+TEST_RUNNER = 'tests:Runner'
+TESTS_REQUIRE = INSTALL_REQUIRES
+
+PACKAGES = setuptools.find_packages('.')
+
+setuptools.setup(
+  name='grpcio-tests',
+  version=grpc_version.VERSION,
+  license=LICENSE,
+  packages=list(PACKAGES),
+  package_dir=PACKAGE_DIRECTORIES,
+  package_data=PACKAGE_DATA,
+  install_requires=INSTALL_REQUIRES,
+  setup_requires=SETUP_REQUIRES,
+  cmdclass=COMMAND_CLASS,
+  tests_require=TESTS_REQUIRE,
+  test_suite=TEST_SUITE,
+  test_loader=TEST_LOADER,
+  test_runner=TEST_RUNNER,
+)
diff --git a/src/python/grpcio/tests/__init__.py b/src/python/grpcio_tests/tests/__init__.py
index a70a1b1f1d..a70a1b1f1d 100644
--- a/src/python/grpcio/tests/__init__.py
+++ b/src/python/grpcio_tests/tests/__init__.py
diff --git a/src/python/grpcio/tests/_loader.py b/src/python/grpcio_tests/tests/_loader.py
index c2f097f6c6..c2f097f6c6 100644
--- a/src/python/grpcio/tests/_loader.py
+++ b/src/python/grpcio_tests/tests/_loader.py
diff --git a/src/python/grpcio/tests/_result.py b/src/python/grpcio_tests/tests/_result.py
index 1acec6a9b5..1acec6a9b5 100644
--- a/src/python/grpcio/tests/_result.py
+++ b/src/python/grpcio_tests/tests/_result.py
diff --git a/src/python/grpcio/tests/_runner.py b/src/python/grpcio_tests/tests/_runner.py
index f0718573e2..f0718573e2 100644
--- a/src/python/grpcio/tests/_runner.py
+++ b/src/python/grpcio_tests/tests/_runner.py
diff --git a/src/python/grpcio/tests/health_check/__init__.py b/src/python/grpcio_tests/tests/health_check/__init__.py
index 100a624dc9..100a624dc9 100644
--- a/src/python/grpcio/tests/health_check/__init__.py
+++ b/src/python/grpcio_tests/tests/health_check/__init__.py
diff --git a/src/python/grpcio/tests/health_check/_health_servicer_test.py b/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py
index 1b63388663..1b63388663 100644
--- a/src/python/grpcio/tests/health_check/_health_servicer_test.py
+++ b/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py
diff --git a/src/python/grpcio/tests/interop/__init__.py b/src/python/grpcio_tests/tests/interop/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/interop/__init__.py
+++ b/src/python/grpcio_tests/tests/interop/__init__.py
diff --git a/src/python/grpcio/tests/interop/_insecure_interop_test.py b/src/python/grpcio_tests/tests/interop/_insecure_interop_test.py
index 91519b6fba..91519b6fba 100644
--- a/src/python/grpcio/tests/interop/_insecure_interop_test.py
+++ b/src/python/grpcio_tests/tests/interop/_insecure_interop_test.py
diff --git a/src/python/grpcio/tests/interop/_interop_test_case.py b/src/python/grpcio_tests/tests/interop/_interop_test_case.py
index ccea17a66d..ccea17a66d 100644
--- a/src/python/grpcio/tests/interop/_interop_test_case.py
+++ b/src/python/grpcio_tests/tests/interop/_interop_test_case.py
diff --git a/src/python/grpcio/tests/interop/_secure_interop_test.py b/src/python/grpcio_tests/tests/interop/_secure_interop_test.py
index c61547b977..c61547b977 100644
--- a/src/python/grpcio/tests/interop/_secure_interop_test.py
+++ b/src/python/grpcio_tests/tests/interop/_secure_interop_test.py
diff --git a/src/python/grpcio/tests/interop/client.py b/src/python/grpcio_tests/tests/interop/client.py
index 8aa1ce30c1..8aa1ce30c1 100644
--- a/src/python/grpcio/tests/interop/client.py
+++ b/src/python/grpcio_tests/tests/interop/client.py
diff --git a/src/python/grpcio/tests/interop/credentials/README b/src/python/grpcio_tests/tests/interop/credentials/README
index cb20dcb49f..cb20dcb49f 100644
--- a/src/python/grpcio/tests/interop/credentials/README
+++ b/src/python/grpcio_tests/tests/interop/credentials/README
diff --git a/src/python/grpcio/tests/interop/credentials/ca.pem b/src/python/grpcio_tests/tests/interop/credentials/ca.pem
index 6c8511a73c..6c8511a73c 100755
--- a/src/python/grpcio/tests/interop/credentials/ca.pem
+++ b/src/python/grpcio_tests/tests/interop/credentials/ca.pem
diff --git a/src/python/grpcio/tests/interop/credentials/server1.key b/src/python/grpcio_tests/tests/interop/credentials/server1.key
index 143a5b8765..143a5b8765 100755
--- a/src/python/grpcio/tests/interop/credentials/server1.key
+++ b/src/python/grpcio_tests/tests/interop/credentials/server1.key
diff --git a/src/python/grpcio/tests/interop/credentials/server1.pem b/src/python/grpcio_tests/tests/interop/credentials/server1.pem
index f3d43fcc5b..f3d43fcc5b 100755
--- a/src/python/grpcio/tests/interop/credentials/server1.pem
+++ b/src/python/grpcio_tests/tests/interop/credentials/server1.pem
diff --git a/src/python/grpcio/tests/interop/methods.py b/src/python/grpcio_tests/tests/interop/methods.py
index 86aa0495a2..86aa0495a2 100644
--- a/src/python/grpcio/tests/interop/methods.py
+++ b/src/python/grpcio_tests/tests/interop/methods.py
diff --git a/src/python/grpcio/tests/interop/resources.py b/src/python/grpcio_tests/tests/interop/resources.py
index c424385cf6..c424385cf6 100644
--- a/src/python/grpcio/tests/interop/resources.py
+++ b/src/python/grpcio_tests/tests/interop/resources.py
diff --git a/src/python/grpcio/tests/interop/server.py b/src/python/grpcio_tests/tests/interop/server.py
index ab2c3c708f..ab2c3c708f 100644
--- a/src/python/grpcio/tests/interop/server.py
+++ b/src/python/grpcio_tests/tests/interop/server.py
diff --git a/src/python/grpcio/tests/protoc_plugin/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/protoc_plugin/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/__init__.py
diff --git a/src/python/grpcio/tests/protoc_plugin/_python_plugin_test.py b/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
index 1c9cbb0d0c..bf09380c85 100644
--- a/src/python/grpcio/tests/protoc_plugin/_python_plugin_test.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
@@ -45,6 +45,11 @@ from six import moves
 import grpc
 from tests.unit.framework.common import test_constants
 
+import tests.protoc_plugin.protos.payload.test_payload_pb2 as payload_pb2
+import tests.protoc_plugin.protos.requests.r.test_requests_pb2 as request_pb2
+import tests.protoc_plugin.protos.responses.test_responses_pb2 as response_pb2
+import tests.protoc_plugin.protos.service.test_service_pb2 as service_pb2
+
 # Identifiers of entities we expect to find in the generated module.
 STUB_IDENTIFIER = 'TestServiceStub'
 SERVICER_IDENTIFIER = 'TestServiceServicer'
@@ -53,12 +58,10 @@ ADD_SERVICER_TO_SERVER_IDENTIFIER = 'add_TestServiceServicer_to_server'
 
 class _ServicerMethods(object):
 
-  def __init__(self, response_pb2, payload_pb2):
+  def __init__(self):
     self._condition = threading.Condition()
     self._paused = False
     self._fail = False
-    self._response_pb2 = response_pb2
-    self._payload_pb2 = payload_pb2
 
   @contextlib.contextmanager
   def pause(self):  # pylint: disable=invalid-name
@@ -85,22 +88,22 @@ class _ServicerMethods(object):
         self._condition.wait()
 
   def UnaryCall(self, request, unused_rpc_context):
-    response = self._response_pb2.SimpleResponse()
-    response.payload.payload_type = self._payload_pb2.COMPRESSABLE
+    response = response_pb2.SimpleResponse()
+    response.payload.payload_type = payload_pb2.COMPRESSABLE
     response.payload.payload_compressable = 'a' * request.response_size
     self._control()
     return response
 
   def StreamingOutputCall(self, request, unused_rpc_context):
     for parameter in request.response_parameters:
-      response = self._response_pb2.StreamingOutputCallResponse()
-      response.payload.payload_type = self._payload_pb2.COMPRESSABLE
+      response = response_pb2.StreamingOutputCallResponse()
+      response.payload.payload_type = payload_pb2.COMPRESSABLE
       response.payload.payload_compressable = 'a' * parameter.size
       self._control()
       yield response
 
   def StreamingInputCall(self, request_iter, unused_rpc_context):
-    response = self._response_pb2.StreamingInputCallResponse()
+    response = response_pb2.StreamingInputCallResponse()
     aggregated_payload_size = 0
     for request in request_iter:
       aggregated_payload_size += len(request.payload.payload_compressable)
@@ -111,8 +114,8 @@ class _ServicerMethods(object):
   def FullDuplexCall(self, request_iter, unused_rpc_context):
     for request in request_iter:
       for parameter in request.response_parameters:
-        response = self._response_pb2.StreamingOutputCallResponse()
-        response.payload.payload_type = self._payload_pb2.COMPRESSABLE
+        response = response_pb2.StreamingOutputCallResponse()
+        response.payload.payload_type = payload_pb2.COMPRESSABLE
         response.payload.payload_compressable = 'a' * parameter.size
         self._control()
         yield response
@@ -121,8 +124,8 @@ class _ServicerMethods(object):
     responses = []
     for request in request_iter:
       for parameter in request.response_parameters:
-        response = self._response_pb2.StreamingOutputCallResponse()
-        response.payload.payload_type = self._payload_pb2.COMPRESSABLE
+        response = response_pb2.StreamingOutputCallResponse()
+        response.payload.payload_type = payload_pb2.COMPRESSABLE
         response.payload.payload_compressable = 'a' * parameter.size
         self._control()
         responses.append(response)
@@ -142,18 +145,13 @@ class _Service(
   """
       
 
-def _CreateService(service_pb2, response_pb2, payload_pb2):
+def _CreateService():
   """Provides a servicer backend and a stub.
 
-  Args:
-    service_pb2: The service_pb2 module generated by this test.
-    response_pb2: The response_pb2 module generated by this test.
-    payload_pb2: The payload_pb2 module generated by this test.
-
   Returns:
     A _Service with which to test RPCs.
   """
-  servicer_methods = _ServicerMethods(response_pb2, payload_pb2)
+  servicer_methods = _ServicerMethods()
 
   class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
 
@@ -182,12 +180,9 @@ def _CreateService(service_pb2, response_pb2, payload_pb2):
   return _Service(servicer_methods, server, stub)
 
 
-def _CreateIncompleteService(service_pb2):
+def _CreateIncompleteService():
   """Provides a servicer backend that fails to implement methods and its stub.
 
-  Args:
-    service_pb2: The service_pb2 module generated by this test.
-
   Returns:
     A _Service with which to test RPCs. The returned _Service's
       servicer_methods implements none of the methods required of it.
@@ -206,7 +201,7 @@ def _CreateIncompleteService(service_pb2):
   return _Service(None, server, stub)
 
 
-def _streaming_input_request_iterator(request_pb2, payload_pb2):
+def _streaming_input_request_iterator():
   for _ in range(3):
     request = request_pb2.StreamingInputCallRequest()
     request.payload.payload_type = payload_pb2.COMPRESSABLE
@@ -214,7 +209,7 @@ def _streaming_input_request_iterator(request_pb2, payload_pb2):
     yield request
 
 
-def _streaming_output_request(request_pb2):
+def _streaming_output_request():
   request = request_pb2.StreamingOutputCallRequest()
   sizes = [1, 2, 3]
   request.response_parameters.add(size=sizes[0], interval_us=0)
@@ -223,7 +218,7 @@ def _streaming_output_request(request_pb2):
   return request
 
 
-def _full_duplex_request_iterator(request_pb2):
+def _full_duplex_request_iterator():
   request = request_pb2.StreamingOutputCallRequest()
   request.response_parameters.add(size=1, interval_us=0)
   yield request
@@ -241,102 +236,40 @@ class PythonPluginTest(unittest.TestCase):
   methods and does not exist for response-streaming methods.
   """
 
-  def setUp(self):
-    # Assume that the appropriate protoc and grpc_python_plugins are on the
-    # path.
-    protoc_command = 'protoc'
-    protoc_plugin_filename = distutils.spawn.find_executable(
-        'grpc_python_plugin')
-    if not os.path.isfile(protoc_command):
-      # Assume that if we haven't built protoc that it's on the system.
-      protoc_command = 'protoc'
-
-    # Ensure that the output directory exists.
-    self.outdir = tempfile.mkdtemp()
-
-    # Find all proto files
-    paths = []
-    root_dir = os.path.dirname(os.path.realpath(__file__))
-    proto_dir = os.path.join(root_dir, 'protos')
-    for walk_root, _, filenames in os.walk(proto_dir):
-      for filename in filenames:
-        if filename.endswith('.proto'):
-          path = os.path.join(walk_root, filename)
-          paths.append(path)
-
-    # Invoke protoc with the plugin.
-    cmd = [
-        protoc_command,
-        '--plugin=protoc-gen-python-grpc=%s' % protoc_plugin_filename,
-        '-I %s' % root_dir,
-        '--python_out=%s' % self.outdir,
-        '--python-grpc_out=%s' % self.outdir
-    ] + paths
-    subprocess.check_call(' '.join(cmd), shell=True, env=os.environ,
-                          cwd=os.path.dirname(os.path.realpath(__file__)))
-
-    # Generated proto directories dont include __init__.py, but
-    # these are needed for python package resolution
-    for walk_root, _, _ in os.walk(os.path.join(self.outdir, 'protos')):
-      path = os.path.join(walk_root, '__init__.py')
-      open(path, 'a').close()
-
-    sys.path.insert(0, self.outdir)
-
-    import protos.payload.test_payload_pb2 as payload_pb2
-    import protos.requests.r.test_requests_pb2 as request_pb2
-    import protos.responses.test_responses_pb2 as response_pb2
-    import protos.service.test_service_pb2 as service_pb2
-    self._payload_pb2 = payload_pb2
-    self._request_pb2 = request_pb2
-    self._response_pb2 = response_pb2
-    self._service_pb2 = service_pb2
-
-  def tearDown(self):
-    try:
-      shutil.rmtree(self.outdir)
-    except OSError as exc:
-      if exc.errno != errno.ENOENT:
-        raise
-    sys.path.remove(self.outdir)
-
   def testImportAttributes(self):
     # check that we can access the generated module and its members.
     self.assertIsNotNone(
-        getattr(self._service_pb2, STUB_IDENTIFIER, None))
+        getattr(service_pb2, STUB_IDENTIFIER, None))
     self.assertIsNotNone(
-        getattr(self._service_pb2, SERVICER_IDENTIFIER, None))
+        getattr(service_pb2, SERVICER_IDENTIFIER, None))
     self.assertIsNotNone(
-        getattr(self._service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER, None))
+        getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER, None))
 
   def testUpDown(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    service = _CreateService()
     self.assertIsNotNone(service.servicer_methods)
     self.assertIsNotNone(service.server)
     self.assertIsNotNone(service.stub)
 
   def testIncompleteServicer(self):
-    service = _CreateIncompleteService(self._service_pb2)
-    request = self._request_pb2.SimpleRequest(response_size=13)
+    service = _CreateIncompleteService()
+    request = request_pb2.SimpleRequest(response_size=13)
     with self.assertRaises(grpc.RpcError) as exception_context:
       service.stub.UnaryCall(request)
     self.assertIs(
         exception_context.exception.code(), grpc.StatusCode.UNIMPLEMENTED)
 
   def testUnaryCall(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request = self._request_pb2.SimpleRequest(response_size=13)
+    service = _CreateService()
+    request = request_pb2.SimpleRequest(response_size=13)
     response = service.stub.UnaryCall(request)
     expected_response = service.servicer_methods.UnaryCall(
         request, 'not a real context!')
     self.assertEqual(expected_response, response)
 
   def testUnaryCallFuture(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request = self._request_pb2.SimpleRequest(response_size=13)
+    service = _CreateService()
+    request = request_pb2.SimpleRequest(response_size=13)
     # Check that the call does not block waiting for the server to respond.
     with service.servicer_methods.pause():
       response_future = service.stub.UnaryCall.future(request)
@@ -346,9 +279,8 @@ class PythonPluginTest(unittest.TestCase):
     self.assertEqual(expected_response, response)
 
   def testUnaryCallFutureExpired(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request = self._request_pb2.SimpleRequest(response_size=13)
+    service = _CreateService()
+    request = request_pb2.SimpleRequest(response_size=13)
     with service.servicer_methods.pause():
       response_future = service.stub.UnaryCall.future(
           request, timeout=test_constants.SHORT_TIMEOUT)
@@ -359,9 +291,8 @@ class PythonPluginTest(unittest.TestCase):
     self.assertIs(response_future.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
 
   def testUnaryCallFutureCancelled(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request = self._request_pb2.SimpleRequest(response_size=13)
+    service = _CreateService()
+    request = request_pb2.SimpleRequest(response_size=13)
     with service.servicer_methods.pause():
       response_future = service.stub.UnaryCall.future(request)
       response_future.cancel()
@@ -369,18 +300,16 @@ class PythonPluginTest(unittest.TestCase):
     self.assertIs(response_future.code(), grpc.StatusCode.CANCELLED)
 
   def testUnaryCallFutureFailed(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request = self._request_pb2.SimpleRequest(response_size=13)
+    service = _CreateService()
+    request = request_pb2.SimpleRequest(response_size=13)
     with service.servicer_methods.fail():
       response_future = service.stub.UnaryCall.future(request)
       self.assertIsNotNone(response_future.exception())
     self.assertIs(response_future.code(), grpc.StatusCode.UNKNOWN)
 
   def testStreamingOutputCall(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request = _streaming_output_request(self._request_pb2)
+    service = _CreateService()
+    request = _streaming_output_request()
     responses = service.stub.StreamingOutputCall(request)
     expected_responses = service.servicer_methods.StreamingOutputCall(
         request, 'not a real RpcContext!')
@@ -389,9 +318,8 @@ class PythonPluginTest(unittest.TestCase):
       self.assertEqual(expected_response, response)
 
   def testStreamingOutputCallExpired(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request = _streaming_output_request(self._request_pb2)
+    service = _CreateService()
+    request = _streaming_output_request()
     with service.servicer_methods.pause():
       responses = service.stub.StreamingOutputCall(
           request, timeout=test_constants.SHORT_TIMEOUT)
@@ -401,9 +329,8 @@ class PythonPluginTest(unittest.TestCase):
         exception_context.exception.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
 
   def testStreamingOutputCallCancelled(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request = _streaming_output_request(self._request_pb2)
+    service = _CreateService()
+    request = _streaming_output_request()
     responses = service.stub.StreamingOutputCall(request)
     next(responses)
     responses.cancel()
@@ -412,9 +339,8 @@ class PythonPluginTest(unittest.TestCase):
     self.assertIs(responses.code(), grpc.StatusCode.CANCELLED)
 
   def testStreamingOutputCallFailed(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request = _streaming_output_request(self._request_pb2)
+    service = _CreateService()
+    request = _streaming_output_request()
     with service.servicer_methods.fail():
       responses = service.stub.StreamingOutputCall(request)
       self.assertIsNotNone(responses)
@@ -423,36 +349,30 @@ class PythonPluginTest(unittest.TestCase):
     self.assertIs(exception_context.exception.code(), grpc.StatusCode.UNKNOWN)
 
   def testStreamingInputCall(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    service = _CreateService()
     response = service.stub.StreamingInputCall(
-        _streaming_input_request_iterator(
-            self._request_pb2, self._payload_pb2))
+        _streaming_input_request_iterator())
     expected_response = service.servicer_methods.StreamingInputCall(
-        _streaming_input_request_iterator(self._request_pb2, self._payload_pb2),
+        _streaming_input_request_iterator(),
         'not a real RpcContext!')
     self.assertEqual(expected_response, response)
 
   def testStreamingInputCallFuture(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    service = _CreateService()
     with service.servicer_methods.pause():
       response_future = service.stub.StreamingInputCall.future(
-          _streaming_input_request_iterator(
-              self._request_pb2, self._payload_pb2))
+          _streaming_input_request_iterator())
     response = response_future.result()
     expected_response = service.servicer_methods.StreamingInputCall(
-        _streaming_input_request_iterator(self._request_pb2, self._payload_pb2),
+        _streaming_input_request_iterator(),
         'not a real RpcContext!')
     self.assertEqual(expected_response, response)
 
   def testStreamingInputCallFutureExpired(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    service = _CreateService()
     with service.servicer_methods.pause():
       response_future = service.stub.StreamingInputCall.future(
-          _streaming_input_request_iterator(
-              self._request_pb2, self._payload_pb2),
+          _streaming_input_request_iterator(),
           timeout=test_constants.SHORT_TIMEOUT)
       with self.assertRaises(grpc.RpcError) as exception_context:
         response_future.result()
@@ -463,43 +383,37 @@ class PythonPluginTest(unittest.TestCase):
         exception_context.exception.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
 
   def testStreamingInputCallFutureCancelled(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    service = _CreateService()
     with service.servicer_methods.pause():
       response_future = service.stub.StreamingInputCall.future(
-          _streaming_input_request_iterator(
-              self._request_pb2, self._payload_pb2))
+          _streaming_input_request_iterator())
       response_future.cancel()
     self.assertTrue(response_future.cancelled())
     with self.assertRaises(grpc.FutureCancelledError):
       response_future.result()
 
   def testStreamingInputCallFutureFailed(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    service = _CreateService()
     with service.servicer_methods.fail():
       response_future = service.stub.StreamingInputCall.future(
-          _streaming_input_request_iterator(
-              self._request_pb2, self._payload_pb2))
+          _streaming_input_request_iterator())
       self.assertIsNotNone(response_future.exception())
       self.assertIs(response_future.code(), grpc.StatusCode.UNKNOWN)
 
   def testFullDuplexCall(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    service = _CreateService()
     responses = service.stub.FullDuplexCall(
-        _full_duplex_request_iterator(self._request_pb2))
+        _full_duplex_request_iterator())
     expected_responses = service.servicer_methods.FullDuplexCall(
-        _full_duplex_request_iterator(self._request_pb2),
+        _full_duplex_request_iterator(),
         'not a real RpcContext!')
     for expected_response, response in moves.zip_longest(
         expected_responses, responses):
       self.assertEqual(expected_response, response)
 
   def testFullDuplexCallExpired(self):
-    request_iterator = _full_duplex_request_iterator(self._request_pb2)
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    request_iterator = _full_duplex_request_iterator()
+    service = _CreateService()
     with service.servicer_methods.pause():
       responses = service.stub.FullDuplexCall(
           request_iterator, timeout=test_constants.SHORT_TIMEOUT)
@@ -509,9 +423,8 @@ class PythonPluginTest(unittest.TestCase):
         exception_context.exception.code(), grpc.StatusCode.DEADLINE_EXCEEDED)
 
   def testFullDuplexCallCancelled(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
-    request_iterator = _full_duplex_request_iterator(self._request_pb2)
+    service = _CreateService()
+    request_iterator = _full_duplex_request_iterator()
     responses = service.stub.FullDuplexCall(request_iterator)
     next(responses)
     responses.cancel()
@@ -521,9 +434,8 @@ class PythonPluginTest(unittest.TestCase):
         exception_context.exception.code(), grpc.StatusCode.CANCELLED)
 
   def testFullDuplexCallFailed(self):
-    request_iterator = _full_duplex_request_iterator(self._request_pb2)
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    request_iterator = _full_duplex_request_iterator()
+    service = _CreateService()
     with service.servicer_methods.fail():
       responses = service.stub.FullDuplexCall(request_iterator)
       with self.assertRaises(grpc.RpcError) as exception_context:
@@ -531,13 +443,12 @@ class PythonPluginTest(unittest.TestCase):
     self.assertIs(exception_context.exception.code(), grpc.StatusCode.UNKNOWN)
 
   def testHalfDuplexCall(self):
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    service = _CreateService()
     def half_duplex_request_iterator():
-      request = self._request_pb2.StreamingOutputCallRequest()
+      request = request_pb2.StreamingOutputCallRequest()
       request.response_parameters.add(size=1, interval_us=0)
       yield request
-      request = self._request_pb2.StreamingOutputCallRequest()
+      request = request_pb2.StreamingOutputCallRequest()
       request.response_parameters.add(size=2, interval_us=0)
       request.response_parameters.add(size=3, interval_us=0)
       yield request
@@ -561,14 +472,13 @@ class PythonPluginTest(unittest.TestCase):
         wait_cell[0] = False
         condition.notify_all()
     def half_duplex_request_iterator():
-      request = self._request_pb2.StreamingOutputCallRequest()
+      request = request_pb2.StreamingOutputCallRequest()
       request.response_parameters.add(size=1, interval_us=0)
       yield request
       with condition:
         while wait_cell[0]:
           condition.wait()
-    service = _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2)
+    service = _CreateService()
     with wait():
       responses = service.stub.HalfDuplexCall(
           half_duplex_request_iterator(), timeout=test_constants.SHORT_TIMEOUT)
diff --git a/src/python/grpcio/tests/protoc_plugin/beta_python_plugin_test.py b/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py
index 7466f88059..1eba9c9354 100644
--- a/src/python/grpcio/tests/protoc_plugin/beta_python_plugin_test.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py
@@ -50,6 +50,11 @@ from grpc.framework.foundation import future
 from grpc.framework.interfaces.face import face
 from tests.unit.framework.common import test_constants
 
+import tests.protoc_plugin.protos.payload.test_payload_pb2 as payload_pb2
+import tests.protoc_plugin.protos.requests.r.test_requests_pb2 as request_pb2
+import tests.protoc_plugin.protos.responses.test_responses_pb2 as response_pb2
+import tests.protoc_plugin.protos.service.test_service_pb2 as service_pb2
+
 # Identifiers of entities we expect to find in the generated module.
 SERVICER_IDENTIFIER = 'BetaTestServiceServicer'
 STUB_IDENTIFIER = 'BetaTestServiceStub'
@@ -59,12 +64,10 @@ STUB_FACTORY_IDENTIFIER = 'beta_create_TestService_stub'
 
 class _ServicerMethods(object):
 
-  def __init__(self, response_pb2, payload_pb2):
+  def __init__(self):
     self._condition = threading.Condition()
     self._paused = False
     self._fail = False
-    self._response_pb2 = response_pb2
-    self._payload_pb2 = payload_pb2
 
   @contextlib.contextmanager
   def pause(self):  # pylint: disable=invalid-name
@@ -91,22 +94,22 @@ class _ServicerMethods(object):
         self._condition.wait()
 
   def UnaryCall(self, request, unused_rpc_context):
-    response = self._response_pb2.SimpleResponse()
-    response.payload.payload_type = self._payload_pb2.COMPRESSABLE
+    response = response_pb2.SimpleResponse()
+    response.payload.payload_type = payload_pb2.COMPRESSABLE
     response.payload.payload_compressable = 'a' * request.response_size
     self._control()
     return response
 
   def StreamingOutputCall(self, request, unused_rpc_context):
     for parameter in request.response_parameters:
-      response = self._response_pb2.StreamingOutputCallResponse()
-      response.payload.payload_type = self._payload_pb2.COMPRESSABLE
+      response = response_pb2.StreamingOutputCallResponse()
+      response.payload.payload_type = payload_pb2.COMPRESSABLE
       response.payload.payload_compressable = 'a' * parameter.size
       self._control()
       yield response
 
   def StreamingInputCall(self, request_iter, unused_rpc_context):
-    response = self._response_pb2.StreamingInputCallResponse()
+    response = response_pb2.StreamingInputCallResponse()
     aggregated_payload_size = 0
     for request in request_iter:
       aggregated_payload_size += len(request.payload.payload_compressable)
@@ -117,8 +120,8 @@ class _ServicerMethods(object):
   def FullDuplexCall(self, request_iter, unused_rpc_context):
     for request in request_iter:
       for parameter in request.response_parameters:
-        response = self._response_pb2.StreamingOutputCallResponse()
-        response.payload.payload_type = self._payload_pb2.COMPRESSABLE
+        response = response_pb2.StreamingOutputCallResponse()
+        response.payload.payload_type = payload_pb2.COMPRESSABLE
         response.payload.payload_compressable = 'a' * parameter.size
         self._control()
         yield response
@@ -127,8 +130,8 @@ class _ServicerMethods(object):
     responses = []
     for request in request_iter:
       for parameter in request.response_parameters:
-        response = self._response_pb2.StreamingOutputCallResponse()
-        response.payload.payload_type = self._payload_pb2.COMPRESSABLE
+        response = response_pb2.StreamingOutputCallResponse()
+        response.payload.payload_type = payload_pb2.COMPRESSABLE
         response.payload.payload_compressable = 'a' * parameter.size
         self._control()
         responses.append(response)
@@ -137,23 +140,18 @@ class _ServicerMethods(object):
 
 
 @contextlib.contextmanager
-def _CreateService(service_pb2, response_pb2, payload_pb2):
+def _CreateService():
   """Provides a servicer backend and a stub.
 
   The servicer is just the implementation of the actual servicer passed to the
   face player of the python RPC implementation; the two are detached.
 
-  Args:
-    service_pb2: The service_pb2 module generated by this test.
-    response_pb2: The response_pb2 module generated by this test
-    payload_pb2: The payload_pb2 module generated by this test
-
   Yields:
     A (servicer_methods, stub) pair where servicer_methods is the back-end of
       the service bound to the stub and and stub is the stub on which to invoke
       RPCs.
   """
-  servicer_methods = _ServicerMethods(response_pb2, payload_pb2)
+  servicer_methods = _ServicerMethods()
 
   class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
 
@@ -183,7 +181,7 @@ def _CreateService(service_pb2, response_pb2, payload_pb2):
 
 
 @contextlib.contextmanager
-def _CreateIncompleteService(service_pb2):
+def _CreateIncompleteService():
   """Provides a servicer backend that fails to implement methods and its stub.
 
   The servicer is just the implementation of the actual servicer passed to the
@@ -209,7 +207,7 @@ def _CreateIncompleteService(service_pb2):
   server.stop(0)
 
 
-def _streaming_input_request_iterator(request_pb2, payload_pb2):
+def _streaming_input_request_iterator():
   for _ in range(3):
     request = request_pb2.StreamingInputCallRequest()
     request.payload.payload_type = payload_pb2.COMPRESSABLE
@@ -217,7 +215,7 @@ def _streaming_input_request_iterator(request_pb2, payload_pb2):
     yield request
 
 
-def _streaming_output_request(request_pb2):
+def _streaming_output_request():
   request = request_pb2.StreamingOutputCallRequest()
   sizes = [1, 2, 3]
   request.response_parameters.add(size=sizes[0], interval_us=0)
@@ -226,7 +224,7 @@ def _streaming_output_request(request_pb2):
   return request
 
 
-def _full_duplex_request_iterator(request_pb2):
+def _full_duplex_request_iterator():
   request = request_pb2.StreamingOutputCallRequest()
   request.response_parameters.add(size=1, interval_us=0)
   yield request
@@ -244,101 +242,39 @@ class PythonPluginTest(unittest.TestCase):
   methods and does not exist for response-streaming methods.
   """
 
-  def setUp(self):
-    # Assume that the appropriate protoc and grpc_python_plugins are on the
-    # path.
-    protoc_command = 'protoc'
-    protoc_plugin_filename = distutils.spawn.find_executable(
-        'grpc_python_plugin')
-    if not os.path.isfile(protoc_command):
-      # Assume that if we haven't built protoc that it's on the system.
-      protoc_command = 'protoc'
-
-    # Ensure that the output directory exists.
-    self.outdir = tempfile.mkdtemp()
-
-    # Find all proto files
-    paths = []
-    root_dir = os.path.dirname(os.path.realpath(__file__))
-    proto_dir = os.path.join(root_dir, 'protos')
-    for walk_root, _, filenames in os.walk(proto_dir):
-      for filename in filenames:
-        if filename.endswith('.proto'):
-          path = os.path.join(walk_root, filename)
-          paths.append(path)
-
-    # Invoke protoc with the plugin.
-    cmd = [
-        protoc_command,
-        '--plugin=protoc-gen-python-grpc=%s' % protoc_plugin_filename,
-        '-I %s' % root_dir,
-        '--python_out=%s' % self.outdir,
-        '--python-grpc_out=%s' % self.outdir
-    ] + paths
-    subprocess.check_call(' '.join(cmd), shell=True, env=os.environ,
-                          cwd=os.path.dirname(os.path.realpath(__file__)))
-
-    # Generated proto directories dont include __init__.py, but
-    # these are needed for python package resolution
-    for walk_root, _, _ in os.walk(os.path.join(self.outdir, 'protos')):
-      path = os.path.join(walk_root, '__init__.py')
-      open(path, 'a').close()
-
-    sys.path.insert(0, self.outdir)
-
-    import protos.payload.test_payload_pb2 as payload_pb2  # pylint: disable=g-import-not-at-top
-    import protos.requests.r.test_requests_pb2 as request_pb2  # pylint: disable=g-import-not-at-top
-    import protos.responses.test_responses_pb2 as response_pb2  # pylint: disable=g-import-not-at-top
-    import protos.service.test_service_pb2 as service_pb2  # pylint: disable=g-import-not-at-top
-    self._payload_pb2 = payload_pb2
-    self._request_pb2 = request_pb2
-    self._response_pb2 = response_pb2
-    self._service_pb2 = service_pb2
-
-  def tearDown(self):
-    try:
-      shutil.rmtree(self.outdir)
-    except OSError as exc:
-      if exc.errno != errno.ENOENT:
-        raise
-    sys.path.remove(self.outdir)
-
   def testImportAttributes(self):
     # check that we can access the generated module and its members.
     self.assertIsNotNone(
-        getattr(self._service_pb2, SERVICER_IDENTIFIER, None))
+        getattr(service_pb2, SERVICER_IDENTIFIER, None))
     self.assertIsNotNone(
-        getattr(self._service_pb2, STUB_IDENTIFIER, None))
+        getattr(service_pb2, STUB_IDENTIFIER, None))
     self.assertIsNotNone(
-        getattr(self._service_pb2, SERVER_FACTORY_IDENTIFIER, None))
+        getattr(service_pb2, SERVER_FACTORY_IDENTIFIER, None))
     self.assertIsNotNone(
-        getattr(self._service_pb2, STUB_FACTORY_IDENTIFIER, None))
+        getattr(service_pb2, STUB_FACTORY_IDENTIFIER, None))
 
   def testUpDown(self):
-    with _CreateService(
-        self._service_pb2, self._response_pb2, self._payload_pb2):
-      self._request_pb2.SimpleRequest(response_size=13)
+    with _CreateService():
+      request_pb2.SimpleRequest(response_size=13)
 
   def testIncompleteServicer(self):
-    with _CreateIncompleteService(self._service_pb2) as (_, stub):
-      request = self._request_pb2.SimpleRequest(response_size=13)
+    with _CreateIncompleteService() as (_, stub):
+      request = request_pb2.SimpleRequest(response_size=13)
       try:
         stub.UnaryCall(request, test_constants.LONG_TIMEOUT)
       except face.AbortionError as error:
         self.assertEqual(interfaces.StatusCode.UNIMPLEMENTED, error.code)
 
   def testUnaryCall(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request = self._request_pb2.SimpleRequest(response_size=13)
+    with _CreateService() as (methods, stub):
+      request = request_pb2.SimpleRequest(response_size=13)
       response = stub.UnaryCall(request, test_constants.LONG_TIMEOUT)
     expected_response = methods.UnaryCall(request, 'not a real context!')
     self.assertEqual(expected_response, response)
 
   def testUnaryCallFuture(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request = self._request_pb2.SimpleRequest(response_size=13)
+    with _CreateService() as (methods, stub):
+      request = request_pb2.SimpleRequest(response_size=13)
       # Check that the call does not block waiting for the server to respond.
       with methods.pause():
         response_future = stub.UnaryCall.future(
@@ -348,9 +284,8 @@ class PythonPluginTest(unittest.TestCase):
     self.assertEqual(expected_response, response)
 
   def testUnaryCallFutureExpired(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request = self._request_pb2.SimpleRequest(response_size=13)
+    with _CreateService() as (methods, stub):
+      request = request_pb2.SimpleRequest(response_size=13)
       with methods.pause():
         response_future = stub.UnaryCall.future(
             request, test_constants.SHORT_TIMEOUT)
@@ -358,27 +293,24 @@ class PythonPluginTest(unittest.TestCase):
           response_future.result()
 
   def testUnaryCallFutureCancelled(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request = self._request_pb2.SimpleRequest(response_size=13)
+    with _CreateService() as (methods, stub):
+      request = request_pb2.SimpleRequest(response_size=13)
       with methods.pause():
         response_future = stub.UnaryCall.future(request, 1)
         response_future.cancel()
         self.assertTrue(response_future.cancelled())
 
   def testUnaryCallFutureFailed(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request = self._request_pb2.SimpleRequest(response_size=13)
+    with _CreateService() as (methods, stub):
+      request = request_pb2.SimpleRequest(response_size=13)
       with methods.fail():
         response_future = stub.UnaryCall.future(
             request, test_constants.LONG_TIMEOUT)
         self.assertIsNotNone(response_future.exception())
 
   def testStreamingOutputCall(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request = _streaming_output_request(self._request_pb2)
+    with _CreateService() as (methods, stub):
+      request = _streaming_output_request()
       responses = stub.StreamingOutputCall(
           request, test_constants.LONG_TIMEOUT)
       expected_responses = methods.StreamingOutputCall(
@@ -388,9 +320,8 @@ class PythonPluginTest(unittest.TestCase):
         self.assertEqual(expected_response, response)
 
   def testStreamingOutputCallExpired(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request = _streaming_output_request(self._request_pb2)
+    with _CreateService() as (methods, stub):
+      request = _streaming_output_request()
       with methods.pause():
         responses = stub.StreamingOutputCall(
             request, test_constants.SHORT_TIMEOUT)
@@ -398,9 +329,8 @@ class PythonPluginTest(unittest.TestCase):
           list(responses)
 
   def testStreamingOutputCallCancelled(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request = _streaming_output_request(self._request_pb2)
+    with _CreateService() as (methods, stub):
+      request = _streaming_output_request()
       responses = stub.StreamingOutputCall(
           request, test_constants.LONG_TIMEOUT)
       next(responses)
@@ -409,9 +339,8 @@ class PythonPluginTest(unittest.TestCase):
         next(responses)
 
   def testStreamingOutputCallFailed(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request = _streaming_output_request(self._request_pb2)
+    with _CreateService() as (methods, stub):
+      request = _streaming_output_request()
       with methods.fail():
         responses = stub.StreamingOutputCall(request, 1)
         self.assertIsNotNone(responses)
@@ -419,38 +348,32 @@ class PythonPluginTest(unittest.TestCase):
           next(responses)
 
   def testStreamingInputCall(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    with _CreateService() as (methods, stub):
       response = stub.StreamingInputCall(
-          _streaming_input_request_iterator(
-              self._request_pb2, self._payload_pb2),
+          _streaming_input_request_iterator(),
           test_constants.LONG_TIMEOUT)
     expected_response = methods.StreamingInputCall(
-        _streaming_input_request_iterator(self._request_pb2, self._payload_pb2),
+        _streaming_input_request_iterator(),
         'not a real RpcContext!')
     self.assertEqual(expected_response, response)
 
   def testStreamingInputCallFuture(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    with _CreateService() as (methods, stub):
       with methods.pause():
         response_future = stub.StreamingInputCall.future(
-            _streaming_input_request_iterator(
-                self._request_pb2, self._payload_pb2),
+            _streaming_input_request_iterator(),
             test_constants.LONG_TIMEOUT)
       response = response_future.result()
     expected_response = methods.StreamingInputCall(
-        _streaming_input_request_iterator(self._request_pb2, self._payload_pb2),
+        _streaming_input_request_iterator(),
         'not a real RpcContext!')
     self.assertEqual(expected_response, response)
 
   def testStreamingInputCallFutureExpired(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    with _CreateService() as (methods, stub):
       with methods.pause():
         response_future = stub.StreamingInputCall.future(
-            _streaming_input_request_iterator(
-                self._request_pb2, self._payload_pb2),
+            _streaming_input_request_iterator(),
             test_constants.SHORT_TIMEOUT)
         with self.assertRaises(face.ExpirationError):
           response_future.result()
@@ -458,12 +381,10 @@ class PythonPluginTest(unittest.TestCase):
             response_future.exception(), face.ExpirationError)
 
   def testStreamingInputCallFutureCancelled(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    with _CreateService() as (methods, stub):
       with methods.pause():
         response_future = stub.StreamingInputCall.future(
-            _streaming_input_request_iterator(
-                self._request_pb2, self._payload_pb2),
+            _streaming_input_request_iterator(),
             test_constants.LONG_TIMEOUT)
         response_future.cancel()
         self.assertTrue(response_future.cancelled())
@@ -471,32 +392,28 @@ class PythonPluginTest(unittest.TestCase):
         response_future.result()
 
   def testStreamingInputCallFutureFailed(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    with _CreateService() as (methods, stub):
       with methods.fail():
         response_future = stub.StreamingInputCall.future(
-            _streaming_input_request_iterator(
-                self._request_pb2, self._payload_pb2),
+            _streaming_input_request_iterator(),
             test_constants.LONG_TIMEOUT)
         self.assertIsNotNone(response_future.exception())
 
   def testFullDuplexCall(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    with _CreateService() as (methods, stub):
       responses = stub.FullDuplexCall(
-          _full_duplex_request_iterator(self._request_pb2),
+          _full_duplex_request_iterator(),
           test_constants.LONG_TIMEOUT)
       expected_responses = methods.FullDuplexCall(
-          _full_duplex_request_iterator(self._request_pb2),
+          _full_duplex_request_iterator(),
           'not a real RpcContext!')
       for expected_response, response in moves.zip_longest(
           expected_responses, responses):
         self.assertEqual(expected_response, response)
 
   def testFullDuplexCallExpired(self):
-    request_iterator = _full_duplex_request_iterator(self._request_pb2)
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    request_iterator = _full_duplex_request_iterator()
+    with _CreateService() as (methods, stub):
       with methods.pause():
         responses = stub.FullDuplexCall(
             request_iterator, test_constants.SHORT_TIMEOUT)
@@ -504,9 +421,8 @@ class PythonPluginTest(unittest.TestCase):
           list(responses)
 
   def testFullDuplexCallCancelled(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
-      request_iterator = _full_duplex_request_iterator(self._request_pb2)
+    with _CreateService() as (methods, stub):
+      request_iterator = _full_duplex_request_iterator()
       responses = stub.FullDuplexCall(
           request_iterator, test_constants.LONG_TIMEOUT)
       next(responses)
@@ -515,9 +431,8 @@ class PythonPluginTest(unittest.TestCase):
         next(responses)
 
   def testFullDuplexCallFailed(self):
-    request_iterator = _full_duplex_request_iterator(self._request_pb2)
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    request_iterator = _full_duplex_request_iterator()
+    with _CreateService() as (methods, stub):
       with methods.fail():
         responses = stub.FullDuplexCall(
             request_iterator, test_constants.LONG_TIMEOUT)
@@ -526,13 +441,12 @@ class PythonPluginTest(unittest.TestCase):
           next(responses)
 
   def testHalfDuplexCall(self):
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    with _CreateService() as (methods, stub):
       def half_duplex_request_iterator():
-        request = self._request_pb2.StreamingOutputCallRequest()
+        request = request_pb2.StreamingOutputCallRequest()
         request.response_parameters.add(size=1, interval_us=0)
         yield request
-        request = self._request_pb2.StreamingOutputCallRequest()
+        request = request_pb2.StreamingOutputCallRequest()
         request.response_parameters.add(size=2, interval_us=0)
         request.response_parameters.add(size=3, interval_us=0)
         yield request
@@ -557,14 +471,13 @@ class PythonPluginTest(unittest.TestCase):
         wait_cell[0] = False
         condition.notify_all()
     def half_duplex_request_iterator():
-      request = self._request_pb2.StreamingOutputCallRequest()
+      request = request_pb2.StreamingOutputCallRequest()
       request.response_parameters.add(size=1, interval_us=0)
       yield request
       with condition:
         while wait_cell[0]:
           condition.wait()
-    with _CreateService(self._service_pb2, self._response_pb2,
-                        self._payload_pb2) as (methods, stub):
+    with _CreateService() as (methods, stub):
       with wait():
         responses = stub.HalfDuplexCall(
             half_duplex_request_iterator(), test_constants.SHORT_TIMEOUT)
@@ -574,5 +487,4 @@ class PythonPluginTest(unittest.TestCase):
 
 
 if __name__ == '__main__':
-  #os.chdir(os.path.dirname(sys.argv[0]))
   unittest.main(verbosity=2)
diff --git a/src/python/grpcio/tests/unit/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/__init__.py
diff --git a/src/python/grpcio/tests/unit/_adapter/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/payload/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/_adapter/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/payload/__init__.py
diff --git a/src/python/grpcio/tests/protoc_plugin/protos/payload/test_payload.proto b/src/python/grpcio_tests/tests/protoc_plugin/protos/payload/test_payload.proto
index 457543aa79..457543aa79 100644
--- a/src/python/grpcio/tests/protoc_plugin/protos/payload/test_payload.proto
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/payload/test_payload.proto
diff --git a/src/python/grpcio/tests/unit/_junkdrawer/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/_junkdrawer/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/__init__.py
diff --git a/src/python/grpcio/tests/unit/_links/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/r/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/_links/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/r/__init__.py
diff --git a/src/python/grpcio/tests/protoc_plugin/protos/requests/r/test_requests.proto b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/r/test_requests.proto
index 54105df6a5..365ae738e1 100644
--- a/src/python/grpcio/tests/protoc_plugin/protos/requests/r/test_requests.proto
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/requests/r/test_requests.proto
@@ -29,7 +29,7 @@
 
 syntax = "proto3";
 
-import "protos/payload/test_payload.proto";
+import "tests/protoc_plugin/protos/payload/test_payload.proto";
 
 package grpc_protoc_plugin;
 
diff --git a/src/python/grpcio/tests/unit/beta/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/responses/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/beta/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/responses/__init__.py
diff --git a/src/python/grpcio/tests/protoc_plugin/protos/responses/test_responses.proto b/src/python/grpcio_tests/tests/protoc_plugin/protos/responses/test_responses.proto
index 734fbda86e..1d54d58db1 100644
--- a/src/python/grpcio/tests/protoc_plugin/protos/responses/test_responses.proto
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/responses/test_responses.proto
@@ -29,7 +29,7 @@
 
 syntax = "proto3";
 
-import "protos/payload/test_payload.proto";
+import "tests/protoc_plugin/protos/payload/test_payload.proto";
 
 package grpc_protoc_plugin;
 
diff --git a/src/python/grpcio/tests/unit/framework/__init__.py b/src/python/grpcio_tests/tests/protoc_plugin/protos/service/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/framework/__init__.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/service/__init__.py
diff --git a/src/python/grpcio/tests/protoc_plugin/protos/service/test_service.proto b/src/python/grpcio_tests/tests/protoc_plugin/protos/service/test_service.proto
index fe715ee7f9..003dbbb9eb 100644
--- a/src/python/grpcio/tests/protoc_plugin/protos/service/test_service.proto
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/service/test_service.proto
@@ -29,8 +29,8 @@
 
 syntax = "proto3";
 
-import "protos/requests/r/test_requests.proto";
-import "protos/responses/test_responses.proto";
+import "tests/protoc_plugin/protos/requests/r/test_requests.proto";
+import "tests/protoc_plugin/protos/responses/test_responses.proto";
 
 package grpc_protoc_plugin;
 
diff --git a/src/python/grpcio/tests/qps/__init__.py b/src/python/grpcio_tests/tests/qps/__init__.py
index 100a624dc9..100a624dc9 100644
--- a/src/python/grpcio/tests/qps/__init__.py
+++ b/src/python/grpcio_tests/tests/qps/__init__.py
diff --git a/src/python/grpcio/tests/qps/benchmark_client.py b/src/python/grpcio_tests/tests/qps/benchmark_client.py
index 080281415d..080281415d 100644
--- a/src/python/grpcio/tests/qps/benchmark_client.py
+++ b/src/python/grpcio_tests/tests/qps/benchmark_client.py
diff --git a/src/python/grpcio/tests/qps/benchmark_server.py b/src/python/grpcio_tests/tests/qps/benchmark_server.py
index 8cbf480d58..8cbf480d58 100644
--- a/src/python/grpcio/tests/qps/benchmark_server.py
+++ b/src/python/grpcio_tests/tests/qps/benchmark_server.py
diff --git a/src/python/grpcio/tests/qps/client_runner.py b/src/python/grpcio_tests/tests/qps/client_runner.py
index 1fd58687ad..1fd58687ad 100644
--- a/src/python/grpcio/tests/qps/client_runner.py
+++ b/src/python/grpcio_tests/tests/qps/client_runner.py
diff --git a/src/python/grpcio/tests/qps/histogram.py b/src/python/grpcio_tests/tests/qps/histogram.py
index 9a7b5eb2ba..9a7b5eb2ba 100644
--- a/src/python/grpcio/tests/qps/histogram.py
+++ b/src/python/grpcio_tests/tests/qps/histogram.py
diff --git a/src/python/grpcio/tests/qps/qps_worker.py b/src/python/grpcio_tests/tests/qps/qps_worker.py
index 16926379a5..16926379a5 100644
--- a/src/python/grpcio/tests/qps/qps_worker.py
+++ b/src/python/grpcio_tests/tests/qps/qps_worker.py
diff --git a/src/python/grpcio/tests/qps/worker_server.py b/src/python/grpcio_tests/tests/qps/worker_server.py
index d41f8377c2..d41f8377c2 100644
--- a/src/python/grpcio/tests/qps/worker_server.py
+++ b/src/python/grpcio_tests/tests/qps/worker_server.py
diff --git a/src/python/grpcio/tests/stress/__init__.py b/src/python/grpcio_tests/tests/stress/__init__.py
index 100a624dc9..100a624dc9 100644
--- a/src/python/grpcio/tests/stress/__init__.py
+++ b/src/python/grpcio_tests/tests/stress/__init__.py
diff --git a/src/python/grpcio/tests/stress/client.py b/src/python/grpcio_tests/tests/stress/client.py
index 0de2532cd8..0de2532cd8 100644
--- a/src/python/grpcio/tests/stress/client.py
+++ b/src/python/grpcio_tests/tests/stress/client.py
diff --git a/src/python/grpcio/tests/stress/metrics_server.py b/src/python/grpcio_tests/tests/stress/metrics_server.py
index b994e4643e..b994e4643e 100644
--- a/src/python/grpcio/tests/stress/metrics_server.py
+++ b/src/python/grpcio_tests/tests/stress/metrics_server.py
diff --git a/src/python/grpcio/tests/stress/test_runner.py b/src/python/grpcio_tests/tests/stress/test_runner.py
index 88f13727e3..88f13727e3 100644
--- a/src/python/grpcio/tests/stress/test_runner.py
+++ b/src/python/grpcio_tests/tests/stress/test_runner.py
diff --git a/src/python/grpcio/tests/tests.json b/src/python/grpcio_tests/tests/tests.json
index 45eb75b242..45eb75b242 100644
--- a/src/python/grpcio/tests/tests.json
+++ b/src/python/grpcio_tests/tests/tests.json
diff --git a/src/python/grpcio/tests/unit/framework/common/__init__.py b/src/python/grpcio_tests/tests/unit/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/framework/common/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/__init__.py
diff --git a/src/python/grpcio/tests/unit/_adapter/.gitignore b/src/python/grpcio_tests/tests/unit/_adapter/.gitignore
index a6f96cd6db..a6f96cd6db 100644
--- a/src/python/grpcio/tests/unit/_adapter/.gitignore
+++ b/src/python/grpcio_tests/tests/unit/_adapter/.gitignore
diff --git a/src/python/grpcio/tests/unit/framework/core/__init__.py b/src/python/grpcio_tests/tests/unit/_adapter/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/framework/core/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/_adapter/__init__.py
diff --git a/src/python/grpcio/tests/unit/_adapter/_proto_scenarios.py b/src/python/grpcio_tests/tests/unit/_adapter/_proto_scenarios.py
index 7a90eacf77..7a90eacf77 100644
--- a/src/python/grpcio/tests/unit/_adapter/_proto_scenarios.py
+++ b/src/python/grpcio_tests/tests/unit/_adapter/_proto_scenarios.py
diff --git a/src/python/grpcio/tests/unit/_api_test.py b/src/python/grpcio_tests/tests/unit/_api_test.py
index 2fe89499f5..2fe89499f5 100644
--- a/src/python/grpcio/tests/unit/_api_test.py
+++ b/src/python/grpcio_tests/tests/unit/_api_test.py
diff --git a/src/python/grpcio/tests/unit/_auth_test.py b/src/python/grpcio_tests/tests/unit/_auth_test.py
index c31f7b06f7..c31f7b06f7 100644
--- a/src/python/grpcio/tests/unit/_auth_test.py
+++ b/src/python/grpcio_tests/tests/unit/_auth_test.py
diff --git a/src/python/grpcio/tests/unit/_channel_connectivity_test.py b/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py
index ae8de523ec..ae8de523ec 100644
--- a/src/python/grpcio/tests/unit/_channel_connectivity_test.py
+++ b/src/python/grpcio_tests/tests/unit/_channel_connectivity_test.py
diff --git a/src/python/grpcio/tests/unit/_channel_ready_future_test.py b/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py
index b84bc0197a..b84bc0197a 100644
--- a/src/python/grpcio/tests/unit/_channel_ready_future_test.py
+++ b/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py
diff --git a/src/python/grpcio/tests/unit/_compression_test.py b/src/python/grpcio_tests/tests/unit/_compression_test.py
index 9e8b8578c1..9e8b8578c1 100644
--- a/src/python/grpcio/tests/unit/_compression_test.py
+++ b/src/python/grpcio_tests/tests/unit/_compression_test.py
diff --git a/src/python/grpcio/tests/unit/_cython/.gitignore b/src/python/grpcio_tests/tests/unit/_cython/.gitignore
index c315029288..c315029288 100644
--- a/src/python/grpcio/tests/unit/_cython/.gitignore
+++ b/src/python/grpcio_tests/tests/unit/_cython/.gitignore
diff --git a/src/python/grpcio/tests/unit/_cython/__init__.py b/src/python/grpcio_tests/tests/unit/_cython/__init__.py
index b89398809f..b89398809f 100644
--- a/src/python/grpcio/tests/unit/_cython/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/__init__.py
diff --git a/src/python/grpcio/tests/unit/_cython/_cancel_many_calls_test.py b/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py
index cac0c8b3b9..cac0c8b3b9 100644
--- a/src/python/grpcio/tests/unit/_cython/_cancel_many_calls_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/_cancel_many_calls_test.py
diff --git a/src/python/grpcio/tests/unit/_cython/_channel_test.py b/src/python/grpcio_tests/tests/unit/_cython/_channel_test.py
index f9c8a3ac62..f9c8a3ac62 100644
--- a/src/python/grpcio/tests/unit/_cython/_channel_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/_channel_test.py
diff --git a/src/python/grpcio/tests/unit/_cython/_read_some_but_not_all_responses_test.py b/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py
index 27fcee0d6f..27fcee0d6f 100644
--- a/src/python/grpcio/tests/unit/_cython/_read_some_but_not_all_responses_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py
diff --git a/src/python/grpcio/tests/unit/_cython/cygrpc_test.py b/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py
index b740695e35..b740695e35 100644
--- a/src/python/grpcio/tests/unit/_cython/cygrpc_test.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/cygrpc_test.py
diff --git a/src/python/grpcio/tests/unit/_cython/test_utilities.py b/src/python/grpcio_tests/tests/unit/_cython/test_utilities.py
index 6280ce74c4..6280ce74c4 100644
--- a/src/python/grpcio/tests/unit/_cython/test_utilities.py
+++ b/src/python/grpcio_tests/tests/unit/_cython/test_utilities.py
diff --git a/src/python/grpcio/tests/unit/_empty_message_test.py b/src/python/grpcio_tests/tests/unit/_empty_message_test.py
index 8c7d697728..8c7d697728 100644
--- a/src/python/grpcio/tests/unit/_empty_message_test.py
+++ b/src/python/grpcio_tests/tests/unit/_empty_message_test.py
diff --git a/src/python/grpcio/tests/unit/_exit_scenarios.py b/src/python/grpcio_tests/tests/unit/_exit_scenarios.py
index 24a2faef85..24a2faef85 100644
--- a/src/python/grpcio/tests/unit/_exit_scenarios.py
+++ b/src/python/grpcio_tests/tests/unit/_exit_scenarios.py
diff --git a/src/python/grpcio/tests/unit/_exit_test.py b/src/python/grpcio_tests/tests/unit/_exit_test.py
index b0d6af73e5..b0d6af73e5 100644
--- a/src/python/grpcio/tests/unit/_exit_test.py
+++ b/src/python/grpcio_tests/tests/unit/_exit_test.py
diff --git a/src/python/grpcio/tests/unit/_from_grpc_import_star.py b/src/python/grpcio_tests/tests/unit/_from_grpc_import_star.py
index 78d2fb7dc5..78d2fb7dc5 100644
--- a/src/python/grpcio/tests/unit/_from_grpc_import_star.py
+++ b/src/python/grpcio_tests/tests/unit/_from_grpc_import_star.py
diff --git a/src/python/grpcio/tests/unit/framework/foundation/__init__.py b/src/python/grpcio_tests/tests/unit/_junkdrawer/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/framework/foundation/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/_junkdrawer/__init__.py
diff --git a/src/python/grpcio/tests/unit/_junkdrawer/math_pb2.py b/src/python/grpcio_tests/tests/unit/_junkdrawer/math_pb2.py
index 20165955b4..20165955b4 100644
--- a/src/python/grpcio/tests/unit/_junkdrawer/math_pb2.py
+++ b/src/python/grpcio_tests/tests/unit/_junkdrawer/math_pb2.py
diff --git a/src/python/grpcio/tests/unit/_junkdrawer/stock_pb2.py b/src/python/grpcio_tests/tests/unit/_junkdrawer/stock_pb2.py
index eef18f82d6..eef18f82d6 100644
--- a/src/python/grpcio/tests/unit/_junkdrawer/stock_pb2.py
+++ b/src/python/grpcio_tests/tests/unit/_junkdrawer/stock_pb2.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/__init__.py b/src/python/grpcio_tests/tests/unit/_links/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/_links/__init__.py
diff --git a/src/python/grpcio/tests/unit/_links/_proto_scenarios.py b/src/python/grpcio_tests/tests/unit/_links/_proto_scenarios.py
index 50661085f9..50661085f9 100644
--- a/src/python/grpcio/tests/unit/_links/_proto_scenarios.py
+++ b/src/python/grpcio_tests/tests/unit/_links/_proto_scenarios.py
diff --git a/src/python/grpcio/tests/unit/_metadata_code_details_test.py b/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py
index 0fd02d2a22..0fd02d2a22 100644
--- a/src/python/grpcio/tests/unit/_metadata_code_details_test.py
+++ b/src/python/grpcio_tests/tests/unit/_metadata_code_details_test.py
diff --git a/src/python/grpcio/tests/unit/_metadata_test.py b/src/python/grpcio_tests/tests/unit/_metadata_test.py
index c637a28039..c637a28039 100644
--- a/src/python/grpcio/tests/unit/_metadata_test.py
+++ b/src/python/grpcio_tests/tests/unit/_metadata_test.py
diff --git a/src/python/grpcio/tests/unit/_rpc_test.py b/src/python/grpcio_tests/tests/unit/_rpc_test.py
index c70d65a6df..c70d65a6df 100644
--- a/src/python/grpcio/tests/unit/_rpc_test.py
+++ b/src/python/grpcio_tests/tests/unit/_rpc_test.py
diff --git a/src/python/grpcio/tests/unit/_sanity/__init__.py b/src/python/grpcio_tests/tests/unit/_sanity/__init__.py
index 2f88fa0412..2f88fa0412 100644
--- a/src/python/grpcio/tests/unit/_sanity/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/_sanity/__init__.py
diff --git a/src/python/grpcio/tests/unit/_sanity/_sanity_test.py b/src/python/grpcio_tests/tests/unit/_sanity/_sanity_test.py
index 0a5a715c0e..e9fdf217ae 100644
--- a/src/python/grpcio/tests/unit/_sanity/_sanity_test.py
+++ b/src/python/grpcio_tests/tests/unit/_sanity/_sanity_test.py
@@ -30,6 +30,9 @@
 import json
 import unittest
 
+import pkg_resources
+import six
+
 import tests
 
 
@@ -44,8 +47,10 @@ class Sanity(unittest.TestCase):
         for test_case_class in tests._loader.iterate_suite_cases(loader.suite)]
     test_suite_names = sorted(set(test_suite_names))
 
-    with open('src/python/grpcio/tests/tests.json') as tests_json_file:
-      tests_json = json.load(tests_json_file)
+    tests_json_string = pkg_resources.resource_string('tests', 'tests.json')
+    if six.PY3:
+      tests_json_string = tests_json_string.decode()
+    tests_json = json.loads(tests_json_string)
     self.assertListEqual(test_suite_names, tests_json)
 
 
diff --git a/src/python/grpcio/tests/unit/_thread_cleanup_test.py b/src/python/grpcio_tests/tests/unit/_thread_cleanup_test.py
index 3e4f317edc..3e4f317edc 100644
--- a/src/python/grpcio/tests/unit/_thread_cleanup_test.py
+++ b/src/python/grpcio_tests/tests/unit/_thread_cleanup_test.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/base/__init__.py b/src/python/grpcio_tests/tests/unit/beta/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/base/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/beta/__init__.py
diff --git a/src/python/grpcio/tests/unit/beta/_beta_features_test.py b/src/python/grpcio_tests/tests/unit/beta/_beta_features_test.py
index 3a9701b8eb..3a9701b8eb 100644
--- a/src/python/grpcio/tests/unit/beta/_beta_features_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_beta_features_test.py
diff --git a/src/python/grpcio/tests/unit/beta/_connectivity_channel_test.py b/src/python/grpcio_tests/tests/unit/beta/_connectivity_channel_test.py
index 5d826a269d..5d826a269d 100644
--- a/src/python/grpcio/tests/unit/beta/_connectivity_channel_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_connectivity_channel_test.py
diff --git a/src/python/grpcio/tests/unit/beta/_face_interface_test.py b/src/python/grpcio_tests/tests/unit/beta/_face_interface_test.py
index 3a67516906..3a67516906 100644
--- a/src/python/grpcio/tests/unit/beta/_face_interface_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_face_interface_test.py
diff --git a/src/python/grpcio/tests/unit/beta/_implementations_test.py b/src/python/grpcio_tests/tests/unit/beta/_implementations_test.py
index 127f93e9bb..127f93e9bb 100644
--- a/src/python/grpcio/tests/unit/beta/_implementations_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_implementations_test.py
diff --git a/src/python/grpcio/tests/unit/beta/_not_found_test.py b/src/python/grpcio_tests/tests/unit/beta/_not_found_test.py
index 37b8c49120..37b8c49120 100644
--- a/src/python/grpcio/tests/unit/beta/_not_found_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_not_found_test.py
diff --git a/src/python/grpcio/tests/unit/beta/_utilities_test.py b/src/python/grpcio_tests/tests/unit/beta/_utilities_test.py
index 90fe10c77c..90fe10c77c 100644
--- a/src/python/grpcio/tests/unit/beta/_utilities_test.py
+++ b/src/python/grpcio_tests/tests/unit/beta/_utilities_test.py
diff --git a/src/python/grpcio/tests/unit/beta/test_utilities.py b/src/python/grpcio_tests/tests/unit/beta/test_utilities.py
index 692da9c97d..692da9c97d 100644
--- a/src/python/grpcio/tests/unit/beta/test_utilities.py
+++ b/src/python/grpcio_tests/tests/unit/beta/test_utilities.py
diff --git a/src/python/grpcio/tests/unit/credentials/README b/src/python/grpcio_tests/tests/unit/credentials/README
index cb20dcb49f..cb20dcb49f 100644
--- a/src/python/grpcio/tests/unit/credentials/README
+++ b/src/python/grpcio_tests/tests/unit/credentials/README
diff --git a/src/python/grpcio/tests/unit/credentials/ca.pem b/src/python/grpcio_tests/tests/unit/credentials/ca.pem
index 6c8511a73c..6c8511a73c 100755
--- a/src/python/grpcio/tests/unit/credentials/ca.pem
+++ b/src/python/grpcio_tests/tests/unit/credentials/ca.pem
diff --git a/src/python/grpcio/tests/unit/credentials/server1.key b/src/python/grpcio_tests/tests/unit/credentials/server1.key
index 143a5b8765..143a5b8765 100755
--- a/src/python/grpcio/tests/unit/credentials/server1.key
+++ b/src/python/grpcio_tests/tests/unit/credentials/server1.key
diff --git a/src/python/grpcio/tests/unit/credentials/server1.pem b/src/python/grpcio_tests/tests/unit/credentials/server1.pem
index f3d43fcc5b..f3d43fcc5b 100755
--- a/src/python/grpcio/tests/unit/credentials/server1.pem
+++ b/src/python/grpcio_tests/tests/unit/credentials/server1.pem
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/__init__.py b/src/python/grpcio_tests/tests/unit/framework/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/framework/__init__.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/links/__init__.py b/src/python/grpcio_tests/tests/unit/framework/common/__init__.py
index 7086519106..7086519106 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/links/__init__.py
+++ b/src/python/grpcio_tests/tests/unit/framework/common/__init__.py
diff --git a/src/python/grpcio/tests/unit/framework/common/test_constants.py b/src/python/grpcio_tests/tests/unit/framework/common/test_constants.py
index b6682d396c..b6682d396c 100644
--- a/src/python/grpcio/tests/unit/framework/common/test_constants.py
+++ b/src/python/grpcio_tests/tests/unit/framework/common/test_constants.py
diff --git a/src/python/grpcio/tests/unit/framework/common/test_control.py b/src/python/grpcio_tests/tests/unit/framework/common/test_control.py
index 088e2f8b88..088e2f8b88 100644
--- a/src/python/grpcio/tests/unit/framework/common/test_control.py
+++ b/src/python/grpcio_tests/tests/unit/framework/common/test_control.py
diff --git a/src/python/grpcio/tests/unit/framework/common/test_coverage.py b/src/python/grpcio_tests/tests/unit/framework/common/test_coverage.py
index ea2d2812ce..ea2d2812ce 100644
--- a/src/python/grpcio/tests/unit/framework/common/test_coverage.py
+++ b/src/python/grpcio_tests/tests/unit/framework/common/test_coverage.py
diff --git a/src/python/grpcio_tests/tests/unit/framework/core/__init__.py b/src/python/grpcio_tests/tests/unit/framework/core/__init__.py
new file mode 100644
index 0000000000..7086519106
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/framework/core/__init__.py
@@ -0,0 +1,30 @@
+# 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.
+
+
diff --git a/src/python/grpcio_tests/tests/unit/framework/foundation/__init__.py b/src/python/grpcio_tests/tests/unit/framework/foundation/__init__.py
new file mode 100644
index 0000000000..7086519106
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/framework/foundation/__init__.py
@@ -0,0 +1,30 @@
+# 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.
+
+
diff --git a/src/python/grpcio/tests/unit/framework/foundation/_logging_pool_test.py b/src/python/grpcio_tests/tests/unit/framework/foundation/_logging_pool_test.py
index 330e445d43..330e445d43 100644
--- a/src/python/grpcio/tests/unit/framework/foundation/_logging_pool_test.py
+++ b/src/python/grpcio_tests/tests/unit/framework/foundation/_logging_pool_test.py
diff --git a/src/python/grpcio/tests/unit/framework/foundation/stream_testing.py b/src/python/grpcio_tests/tests/unit/framework/foundation/stream_testing.py
index 098a53d5e7..098a53d5e7 100644
--- a/src/python/grpcio/tests/unit/framework/foundation/stream_testing.py
+++ b/src/python/grpcio_tests/tests/unit/framework/foundation/stream_testing.py
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/__init__.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/__init__.py
new file mode 100644
index 0000000000..7086519106
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/__init__.py
@@ -0,0 +1,30 @@
+# 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.
+
+
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/base/__init__.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/__init__.py
new file mode 100644
index 0000000000..7086519106
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/__init__.py
@@ -0,0 +1,30 @@
+# 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.
+
+
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/base/_control.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/_control.py
index 0eb38abf22..0eb38abf22 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/base/_control.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/_control.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/base/_sequence.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/_sequence.py
index 571d0e1e63..571d0e1e63 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/base/_sequence.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/_sequence.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/base/_state.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/_state.py
index 21cf33aeb6..21cf33aeb6 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/base/_state.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/_state.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/base/test_cases.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/test_cases.py
index 5d16bf98be..5d16bf98be 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/base/test_cases.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/test_cases.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/base/test_interfaces.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/test_interfaces.py
index 5eba475ba8..5eba475ba8 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/base/test_interfaces.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/base/test_interfaces.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/_3069_test_constant.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_3069_test_constant.py
index 1ea356c0bf..1ea356c0bf 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/_3069_test_constant.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_3069_test_constant.py
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/face/__init__.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/__init__.py
new file mode 100644
index 0000000000..7086519106
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/__init__.py
@@ -0,0 +1,30 @@
+# 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.
+
+
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/_blocking_invocation_inline_service.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_blocking_invocation_inline_service.py
index e338aaa396..e338aaa396 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/_blocking_invocation_inline_service.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_blocking_invocation_inline_service.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/_digest.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_digest.py
index f0befb0b27..f0befb0b27 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/_digest.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_digest.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py
index 791620307b..791620307b 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_future_invocation_asynchronous_event_service.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/_invocation.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_invocation.py
index ac487bed4f..ac487bed4f 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/_invocation.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_invocation.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/_receiver.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_receiver.py
index 48f31fc677..48f31fc677 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/_receiver.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_receiver.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/_service.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_service.py
index f13dff0558..f13dff0558 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/_service.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_service.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/_stock_service.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_stock_service.py
index 5299655bb3..5299655bb3 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/_stock_service.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/_stock_service.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/test_cases.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_cases.py
index 71de9d835e..71de9d835e 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/test_cases.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_cases.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/face/test_interfaces.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_interfaces.py
index 40f38e68ba..40f38e68ba 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/face/test_interfaces.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/face/test_interfaces.py
diff --git a/src/python/grpcio_tests/tests/unit/framework/interfaces/links/__init__.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/links/__init__.py
new file mode 100644
index 0000000000..7086519106
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/links/__init__.py
@@ -0,0 +1,30 @@
+# 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.
+
+
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/links/test_cases.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/links/test_cases.py
index 608e64119e..608e64119e 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/links/test_cases.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/links/test_cases.py
diff --git a/src/python/grpcio/tests/unit/framework/interfaces/links/test_utilities.py b/src/python/grpcio_tests/tests/unit/framework/interfaces/links/test_utilities.py
index 39c7f2fc63..39c7f2fc63 100644
--- a/src/python/grpcio/tests/unit/framework/interfaces/links/test_utilities.py
+++ b/src/python/grpcio_tests/tests/unit/framework/interfaces/links/test_utilities.py
diff --git a/src/python/grpcio/tests/unit/resources.py b/src/python/grpcio_tests/tests/unit/resources.py
index 023cdb155f..023cdb155f 100644
--- a/src/python/grpcio/tests/unit/resources.py
+++ b/src/python/grpcio_tests/tests/unit/resources.py
diff --git a/src/python/grpcio/tests/unit/test_common.py b/src/python/grpcio_tests/tests/unit/test_common.py
index c8886bf4ca..c8886bf4ca 100644
--- a/src/python/grpcio/tests/unit/test_common.py
+++ b/src/python/grpcio_tests/tests/unit/test_common.py