added test file for tools module containing a test for the ClientRedi…

…rectServer and ClientRedirect classes

tests/test_tools.py

@@ -0,0 +1,30 @@
+"""Unit tests for oauth2client.tools."""
+
+import unittest
+from oauth2client import tools
+from six.moves.urllib import request
+import threading
+
+class TestClientRedirectServer(unittest.TestCase):
+    """Test the ClientRedirectServer and ClientRedirectHandler classes."""
+
+    def test_ClientRedirectServer(self):
+        # create a ClientRedirectServer and run it in a thread to listen
+        # for a mock GET request with the access token
+        # the server should return a 200 message and store the token
+        httpd = tools.ClientRedirectServer(('localhost', 0), tools.ClientRedirectHandler)
+        code = 'foo'
+        url = 'http://localhost:%i?code=%s' % (httpd.server_address[1], code)
+        t = threading.Thread(target = httpd.handle_request)
+        t.setDaemon(True)
+        t.start()
+        f = request.urlopen( url )
+        self.assertTrue(f.read())
+        t.join()
+        httpd.server_close()
+        self.assertEqual(httpd.query_params.get('code'),code)
+
+
+if __name__ == '__main__':
+    unittest.main()
+