Add a note warning the users that presubmit hooks will be run.

tests/presubmit_unittest.py

 #!/usr/bin/python
 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Unit tests for presubmit_support.py and presubmit_canned_checks.py."""
 
 import StringIO
 
 # Fixes include path.
@@ skipping 323 matching lines @@
     presubmit.random.randint(0, 4).AndReturn(1)
     self.mox.ReplayAll()
 
     output = StringIO.StringIO()
     input = StringIO.StringIO('y\n')
     change = presubmit.Change('mychange', '\n'.join(description_lines),
                               self.fake_root_dir, files, 0, 0)
     self.failIf(presubmit.DoPresubmitChecks(change, False, True, output, input,
                                             None, False))
     self.assertEqual(output.getvalue().count('!!'), 2)
+    self.checkstdout('Running presubmit hooks...\n')
 
   def testDoPresubmitChecksPromptsAfterWarnings(self):
     join = presubmit.os.path.join
     description_lines = ('Hello there',
                          'this is a change',
                          'NOSUCHKEY=http://tracker/123')
     files = [
       ['A', join('haspresubmit', 'blat.cc')],
     ]
     presubmit_path = join(self.fake_root_dir, 'PRESUBMIT.py')
@@ skipping 18 matching lines @@
                               self.fake_root_dir, files, 0, 0)
     self.failIf(presubmit.DoPresubmitChecks(change, False, True, output, input,
                                             None, True))
     self.assertEqual(output.getvalue().count('??'), 2)
 
     output = StringIO.StringIO()
     input = StringIO.StringIO('y\n')  # say yes to the warning
     self.failUnless(presubmit.DoPresubmitChecks(change, False, True, output,
                                                 input, None, True))
     self.assertEquals(output.getvalue().count('??'), 2)
+    self.checkstdout('Running presubmit hooks...\nRunning presubmit hooks...\n')
 
   def testDoPresubmitChecksNoWarningPromptIfErrors(self):
     join = presubmit.os.path.join
     description_lines = ('Hello there',
                          'this is a change',
                          'NOSUCHKEY=http://tracker/123',
                          'REALLYNOSUCHKEY=http://tracker/123')
     files = [
       ['A', join('haspresubmit', 'blat.cc')],
     ]
@@ skipping 14 matching lines @@
 
     output = StringIO.StringIO()
     input = StringIO.StringIO()  # should be unused
     change = presubmit.Change('mychange', '\n'.join(description_lines),
                               self.fake_root_dir, files, 0, 0)
     self.failIf(presubmit.DoPresubmitChecks(change, False, True, output, input,
                                             None, False))
     self.assertEqual(output.getvalue().count('??'), 2)
     self.assertEqual(output.getvalue().count('XX!!XX'), 2)
     self.assertEqual(output.getvalue().count('(y/N)'), 0)
+    self.checkstdout('Running presubmit hooks...\n')
 
   def testDoDefaultPresubmitChecksAndFeedback(self):
     join = presubmit.os.path.join
     description_lines = ('Hello there',
                          'this is a change',
                          'STORY=http://tracker/123')
     files = [
       ['A', join('haspresubmit', 'blat.cc')],
     ]
     DEFAULT_SCRIPT = """
@@ skipping 19 matching lines @@
     change = presubmit.Change('mychange', '\n'.join(description_lines),
                               self.fake_root_dir, files, 0, 0)
     self.failIf(presubmit.DoPresubmitChecks(change, False, True, output, input,
                                             DEFAULT_SCRIPT, False))
     text = ('Warning, no presubmit.py found.\n'
             'Running default presubmit script.\n'
             '** Presubmit ERRORS **\n!!\n\n'
             'Was the presubmit check useful? Please send feedback & hate mail '
             'to maruel@chromium.org!\n')
     self.assertEquals(output.getvalue(), text)
+    self.checkstdout('Running presubmit hooks...\n')
 
   def testDirectoryHandling(self):
     files = [
       ['A', 'isdir'],
       ['A', presubmit.os.path.join('isdir', 'blat.cc')],
     ]
     isdir = presubmit.os.path.join(self.fake_root_dir, 'isdir')
     blat = presubmit.os.path.join(isdir, 'blat.cc')
     presubmit.os.path.exists(isdir).AndReturn(True)
     presubmit.os.path.isdir(isdir).AndReturn(True)
@@ skipping 51 matching lines @@
     change = presubmit.Change(
         'foo', "Blah Blah\n\nSTORY=http://tracker.com/42\nBUG=boo\n",
         self.fake_root_dir, None, 0, 0)
     self.failUnless(presubmit.DoPresubmitChecks(change, False, True, output,
                                                 input, DEFAULT_SCRIPT, False))
     self.assertEquals(output.getvalue(),
                       ('Warning, no presubmit.py found.\n'
                        'Running default presubmit script.\n'
                        '** Presubmit Messages **\n'
                        'http://tracker.com/42\n\n'))
+    self.checkstdout('Running presubmit hooks...\n')
 
   def testGetTrySlavesExecuter(self):
     self.mox.ReplayAll()
 
     executer = presubmit.GetTrySlavesExecuter()
     self.assertEqual([], executer.ExecPresubmitScript(''))
     self.assertEqual([], executer.ExecPresubmitScript('def foo():\n  return\n'))
 
     # bad results
     starts_with_space_result = ['  starts_with_space']
@@ skipping 1198 matching lines @@
     results = presubmit_canned_checks.CheckBuildbotPendingBuilds(
         input_api, presubmit.OutputApi, 'uurl', 2, ('foo'))
     self.assertEquals(len(results), 1)
     self.assertEquals(results[0].__class__,
         presubmit.OutputApi.PresubmitNotifyResult)
 
 
 if __name__ == '__main__':
   import unittest
   unittest.main()