Add a simple test to google_assistant code.

diff --git a/tests/google_assistant_test.py b/tests/google_assistant_test.py
new file mode 100755 (executable)
index 0000000..7699337
--- /dev/null
+++ b/tests/google_assistant_test.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+
+import unittest
+from unittest.mock import MagicMock, patch
+
+import google_assistant
+import unittest_utils  # Needed for --unittests_ignore_perf flag
+
+
+class TestGoogleAssistant(unittest.TestCase):
+    def test_basic_functionality(self):
+
+        with patch('requests.post') as mock:
+            response = MagicMock()
+            response.status_code = 404
+            mock.return_value = response
+            ret = google_assistant.ask_google('What happens with a 404 response?')
+            self.assertFalse(ret.success)
+            self.assertTrue('failed; code 404' in ret.response)
+            self.assertEqual('', ret.audio_transcription)
+            self.assertEqual('', ret.audio_url)
+
+
+if __name__ == '__main__':
+    unittest.main()