# Copyright 2018 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Test of gRPC Python's interaction with the python logging module"""

import unittest
import six
from six.moves import reload_module
import logging
import grpc
import functools
import sys

class LoggingTest(unittest.TestCase):

    def test_logger_not_occupied(self):
        self.assertEqual(0, len(logging.getLogger().handlers))

    def test_handler_found(self):
        old_stderr = sys.stderr
        sys.stderr = six.StringIO()
        try:
            reload_module(logging)
            logging.basicConfig()
            reload_module(grpc)
            self.assertFalse("No handlers could be found" in sys.stderr.getvalue())
        finally:
            sys.stderr = old_stderr
            reload_module(logging)

if __name__ == '__main__':
    unittest.main(verbosity=2)

# Copyright 2018 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Test of gRPC Python's interaction with the python logging module"""

import unittest
import six
import grpc
import logging


class LoggingTest(unittest.TestCase):

    def test_logger_not_occupied(self):
        self.assertEqual(0, len(logging.getLogger().handlers))


if __name__ == '__main__':
    unittest.main(verbosity=2)

--- 
+++ 
@@ -15,15 +15,28 @@
 
 import unittest
 import six
+from six.moves import reload_module
+import logging
 import grpc
-import logging
-
+import functools
+import sys
 
 class LoggingTest(unittest.TestCase):
 
     def test_logger_not_occupied(self):
         self.assertEqual(0, len(logging.getLogger().handlers))
 
+    def test_handler_found(self):
+        old_stderr = sys.stderr
+        sys.stderr = six.StringIO()
+        try:
+            reload_module(logging)
+            logging.basicConfig()
+            reload_module(grpc)
+            self.assertFalse("No handlers could be found" in sys.stderr.getvalue())
+        finally:
+            sys.stderr = old_stderr
+            reload_module(logging)
 
 if __name__ == '__main__':
     unittest.main(verbosity=2)
Add test for 'No handlers could be found' problem
