call site 18 for path.svnwc.__str__
path/testing/common.py - line 27
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   def test_join_normalized(self):
       newpath = self.root.join(self.root.sep+'sampledir')
->     strp = str(newpath) 
       assert strp.endswith('sampledir') 
       assert strp.startswith(str(self.root)) 
       newpath = self.root.join((self.root.sep*2) + 'sampledir')
       strp = str(newpath) 
       assert strp.endswith('sampledir') 
       assert strp.startswith(str(self.root))