Add CheckChangeHasNoStrayWhitespace().

tests/presubmit_unittest.py

 #!/usr/bin/python
 # Copyright (c) 2006-2009 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 exceptions
 import random
 import string
@@ skipping 920 matching lines @@
     input_api.re = presubmit.re
     input_api.traceback = presubmit.traceback
     input_api.urllib2 = self.mox.CreateMock(presubmit.urllib2)
     input_api.unittest = unittest
     return input_api
 
   def testMembersChanged(self):
     self.mox.ReplayAll()
     members = [
       'CheckChangeHasBugField', 'CheckChangeHasDescription',
+      'CheckChangeHasNoStrayWhitespace',
       'CheckChangeHasOnlyOneEol', 'CheckChangeHasNoCR',
       'CheckChangeHasNoCrAndHasOnlyOneEol', 'CheckChangeHasNoTabs',
       'CheckChangeHasQaField', 'CheckChangeHasTestedField',
       'CheckChangeHasTestField', 'CheckChangeSvnEolStyle',
       'CheckDoNotSubmit',
       'CheckDoNotSubmitInDescription', 'CheckDoNotSubmitInFiles',
       'CheckLongLines', 'CheckTreeIsOpen', 'RunPythonUnitTests',
     ]
     # If this test fails, you should add the relevant test.
     self.compareMembers(presubmit_canned_checks, members)
@@ skipping 135 matching lines @@
                          'Foo\nDO NOTSUBMIT', 'Foo\nDO NOT ' + 'SUBMIT',
                          presubmit.OutputApi.PresubmitError,
                          False)
 
   def testCannedCheckDoNotSubmitInFiles(self):
     self.ContentTest(
         lambda x,y,z: presubmit_canned_checks.CheckDoNotSubmitInFiles(x, y),
         'DO NOTSUBMIT', 'DO NOT ' + 'SUBMIT',
         presubmit.OutputApi.PresubmitError)
 
+  def testCheckChangeHasNoStrayWhitespace(self):
+    self.ContentTest(
+        lambda x,y,z:
+            presubmit_canned_checks.CheckChangeHasNoStrayWhitespace(x, y),
+        'Foo', 'Foo ',
+        presubmit.OutputApi.PresubmitPromptWarning)
+    
+
   def testCheckChangeHasOnlyOneEol(self):
     self.ReadFileTest(presubmit_canned_checks.CheckChangeHasOnlyOneEol,
                       "Hey!\nHo!\n", "Hey!\nHo!\n\n",
                       presubmit.OutputApi.PresubmitPromptWarning)
 
   def testCheckChangeHasNoCR(self):
     self.ReadFileTest(presubmit_canned_checks.CheckChangeHasNoCR,
                       "Hey!\nHo!\n", "Hey!\r\nHo!\r\n",
                       presubmit.OutputApi.PresubmitPromptWarning)
  
@@ skipping 192 matching lines @@
     test_result.errors = 0
     self.mox.ReplayAll()
 
     results = presubmit_canned_checks.RunPythonUnitTests(
         input_api, presubmit.OutputApi, ['test_module'])
     self.assertEquals(len(results), 0)
 
 
 if __name__ == '__main__':
   unittest.main()