Enable Python testing and coverage

src/python/grpcio/.gitignore

 MANIFEST
-grpcio.egg-info/
+*.egg-info/
 build/
 dist/
 *.egg

src/python/grpcio/setup.py

@@ -89,7 +89,7 @@ _PACKAGE_DIRECTORIES = {
 _INSTALL_REQUIRES = (
     'enum34==1.0.4',
     'futures==2.2.0',
-    'protobuf==3.0.0a3'
+    'protobuf==3.0.0a3',
 )
 
 _SETUP_REQUIRES = (
@@ -97,7 +97,7 @@ _SETUP_REQUIRES = (
 ) + _INSTALL_REQUIRES
 
 _COMMAND_CLASS = {
-    'doc': commands.SphinxDocumentation
+    'doc': commands.SphinxDocumentation,
 }
 
 setuptools.setup(

src/python/grpcio_test/.gitignore

+MANIFEST
+*.egg-info/
+build/
+dist/
+*.egg
+*.egg/
+*.eggs/
+.coverage
+.coverage.*
+nosetests.xml

src/python/grpcio_test/MANIFEST.in

+graft grpc_interop
+graft grpc_test
+include commands.py

src/python/grpcio_test/commands.py

+# 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 test setup process."""
+
+import os
+import os.path
+import sys
+
+import setuptools
+
+
+class RunTests(setuptools.Command):
+  """Command to run all tests via py.test."""
+
+  description = ''
+  user_options = [('pytest-args=', 'a', 'arguments to pass to py.test')]
+
+  def initialize_options(self):
+    self.pytest_args = []
+
+  def finalize_options(self):
+    pass
+
+  def run(self):
+    # We import here to ensure that setup.py has had a chance to install the
+    # relevant package eggs first.
+    import pytest
+    pytest.main(self.pytest_args)

src/python/grpcio_test/setup.cfg

+[pytest]
+norecursedirs = _cython
+python_files = *_test.py

src/python/grpcio_test/setup.py

@@ -29,8 +29,17 @@
 
 """A setup module for the GRPC Python interop testing package."""
 
+import os
+import os.path
+
 import setuptools
 
+# 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 commands
+
 _PACKAGES = setuptools.find_packages('.', exclude=['*._cython', '*._cython.*'])
 
 _PACKAGE_DIRECTORIES = {
@@ -51,5 +60,13 @@ setuptools.setup(
     packages=_PACKAGES,
     package_dir=_PACKAGE_DIRECTORIES,
     package_data=_PACKAGE_DATA,
-    install_requires=_INSTALL_REQUIRES
+    install_requires=_INSTALL_REQUIRES,
+    setup_requires=(
+        'pytest>=2.6',
+        'pytest-cov>=2.0',
+        'pytest-xdist>=1.11',
+    ),
+    cmdclass={
+        'test': commands.RunTests
+    }
 )