Rietveld: don't email on "Dry Run: CQ is trying da patch"

appengine/chromium_rietveld/tests/test_utils.py

 #!/usr/bin/env python
 # Copyright 2016 Google Inc.
 #
 # 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
@@ skipping 30 matching lines @@
     msg += '\n'
     self.assertEqual(utils.parse_cq_status_url_message(msg), (url, 213, 1))
     msg = 'Dry run: ' + msg
     self.assertEqual(utils.parse_cq_status_url_message(msg), (url, 213, 1))
 
   def test_parse_cq_status_url_message_fail(self):
     self.assertEqual(utils.parse_cq_status_url_message(''), (None, None, None))
     msg = 'Dry run failed because https://weird.url/patch-status/123/4'
     self.assertEqual(utils.parse_cq_status_url_message(msg), (None, None, None))
 
+  def test_is_cq_dry_run_start_message(self):
+    self.assertTrue(utils.is_cq_dry_run_start_message(
+        'Dry Run: CQ is trying da patch. Follow status at\n\nhttps://u.r/l'))
+    self.assertTrue(utils.is_cq_dry_run_start_message(
+        'Dry Run: CQ is trying da patch.\nReference: codereview/xxxx/yyy'))
+
+    self.assertFalse(utils.is_cq_dry_run_start_message(
+        'CQ is trying da patch. Follow status at\n\nhttps://u.r/l'))
+    self.assertFalse(utils.is_cq_dry_run_start_message(
+        'Dry run: Try jobs failed...'))
+    self.assertFalse(utils.is_cq_dry_run_start_message(
+        'Try jobs failed because builder name is Dry Run...'))
+
+  def test_is_cq_dry_message(self):
+    self.assertTrue(utils.is_cq_dry_message('Dry run: Try jobs failed...'))
+    self.assertFalse(utils.is_cq_dry_message(
+        'Try jobs failed because builder name is Dry Run...'))
+
 
 if __name__ == '__main__':
   unittest.main()