Git patches created by webkitpy now always have filename prefixes

third_party/WebKit/Tools/Scripts/webkitpy/common/checkout/scm/scm_unittest.py

 # Copyright (C) 2009 Google Inc. All rights reserved.
 # Copyright (C) 2009 Apple Inc. All rights reserved.
 # Copyright (C) 2011 Daniel Bates (dbates@intudata.com). All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #    * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
@@ skipping 178 matching lines @@
 
     def test_create_patch(self):
         self._write_text_file('test_file_commit1', 'contents')
         self._run(['git', 'add', 'test_file_commit1'])
         scm = self.tracking_scm
         scm.commit_locally_with_message('message')
 
         patch = scm.create_patch()
         self.assertNotRegexpMatches(patch, r'Subversion Revision:')
 
+    def test_patches_have_filenames_with_prefixes(self):
+        self._write_text_file('test_file_commit1', 'contents')
+        self._run(['git', 'add', 'test_file_commit1'])
+        scm = self.tracking_scm
+        scm.commit_locally_with_message('message')
+
+        # Even if diff.noprefix is enabled, create_patch() produces diffs with prefixes.
+        self._run(['git', 'config', 'diff.noprefix', 'true'])
+        patch = scm.create_patch()
+        self.assertRegexpMatches(patch, r'^diff --git a/test_file_commit1 b/test_file_commit1')
+
     def test_exists(self):
         scm = self.untracking_scm
         self._shared_test_exists(scm, scm.commit_locally_with_message)
 
     def test_rename_files(self):
         scm = self.tracking_scm
         scm.move('foo_file', 'bar_file')
         scm.commit_locally_with_message('message')
 
     def test_commit_position_from_git_log(self):
@@ skipping 29 matching lines @@
         scm = self.make_scm()
         scm.find_checkout_root = lambda path: ''
         scm._run_git = lambda args: 'Date: 2013-02-08 08:05:49 +0000'
         self.assertEqual(scm.timestamp_of_revision('some-path', '12345'), '2013-02-08T08:05:49Z')
 
         scm._run_git = lambda args: 'Date: 2013-02-08 01:02:03 +0130'
         self.assertEqual(scm.timestamp_of_revision('some-path', '12345'), '2013-02-07T23:32:03Z')
 
         scm._run_git = lambda args: 'Date: 2013-02-08 01:55:21 -0800'
         self.assertEqual(scm.timestamp_of_revision('some-path', '12345'), '2013-02-08T09:55:21Z')