call site 13 for path.local.common
path/local/testing/test_posix.py - line 123
117
118
119
120
121
122
123
   def test_commondir(self):
       # XXX This is here in local until we find a way to implement this
       #     using the subversion command line api.
       p1 = self.root.join('something')
       p2 = self.root.join('otherthing')
       assert p1.common(p2) == self.root
->     assert p2.common(p1) == self.root