Add file:// case in presubmit_canned_checks.CheckLongLines

tests/presubmit_unittest.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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."""
 
 # pylint: disable=E1101,E1103
 
 import functools
@@ skipping 2217 matching lines @@
   def testCannedCheckLongLinesHttp(self):
     check = lambda x, y, z: presubmit_canned_checks.CheckLongLines(x, y, 10, z)
     self.ContentTest(
         check,
         ' http:// 0 23 5',
         None,
         ' http:// 0 23 56',
         None,
         presubmit.OutputApi.PresubmitPromptWarning)
 
+  def testCannedCheckLongLinesFile(self):
+    check = lambda x, y, z: presubmit_canned_checks.CheckLongLines(x, y, 10, z)
+    self.ContentTest(
+        check,
+        ' file:// 0 23 5',
+        None,
+        ' file:// 0 23 56',
+        None,
+        presubmit.OutputApi.PresubmitPromptWarning)
+
+
   def testCannedCheckLongLinesLongSymbol(self):
     check = lambda x, y, z: presubmit_canned_checks.CheckLongLines(x, y, 10, z)
     self.ContentTest(
         check,
         ' TUP5D_LoNG_SY ',
         None,
         ' TUP5D_LoNG_SY5 ',
         None,
         presubmit.OutputApi.PresubmitPromptWarning)
 
@@ skipping 642 matching lines @@
         owners_check=False)
     self.assertEqual(1, len(results))
     self.assertEqual(
         'Found line ending with white spaces in:', results[0]._message)
     self.checkstdout('')
 
 
 if __name__ == '__main__':
   import unittest
   unittest.main()