Add --sup_rep support to trychange.py.

tests/scm_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 scm.py."""
 
 import shutil
 import tempfile
 
@@ skipping 133 matching lines @@
     self.mox.ReplayAll()
     members = [
         'COMMAND', 'Capture', 'CaptureHeadRevision', 'CaptureInfo',
         'CaptureStatus', 'DiffItem', 'GenerateDiff', 'GetCheckoutRoot',
         'GetEmail', 'GetFileProperty', 'IsMoved',
         'ReadSimpleAuth', 'Run', 'RunAndFilterOutput', 'RunAndGetFileList',
     ]
     # If this test fails, you should add the relevant test.
     self.compareMembers(scm.SVN, members)
 
+  def testGetCheckoutRoot(self):
+    self.mox.StubOutWithMock(scm.SVN, 'CaptureInfo')
+    scm.os.path.abspath(self.root_dir + 'x').AndReturn(self.root_dir)
+    result1 = { "Repository Root": "Some root" }
+    scm.SVN.CaptureInfo(self.root_dir, print_error=False).AndReturn(result1)
+    results2 = { "Repository Root": "A different root" }
+    scm.SVN.CaptureInfo(scm.os.path.dirname(self.root_dir),
+                        print_error=False).AndReturn(results2)
+    self.mox.ReplayAll()
+    self.assertEquals(scm.SVN.GetCheckoutRoot(self.root_dir + 'x'),
+                      self.root_dir)
+
   def testGetFileInfo(self):
     xml_text = r"""<?xml version="1.0"?>
 <info>
 <entry kind="file" path="%s" revision="14628">
 <url>http://src.chromium.org/svn/trunk/src/chrome/app/d</url>
 <repository><root>http://src.chromium.org/svn</root></repository>
 <wc-info>
 <schedule>add</schedule>
 <depth>infinity</depth>
 <copy-from-url>http://src.chromium.org/svn/trunk/src/chrome/app/DEPS</copy-from-url>
@@ skipping 143 matching lines @@
     self.mox.ReplayAll()
     info = scm.SVN.CaptureStatus(None)
     self.assertEquals(info, [])
 
 
 if __name__ == '__main__':
   import unittest
   unittest.main()
 
 # vim: ts=2:sw=2:tw=80:et: