call site 11 for path.svnurl.relto
path/testing/common.py - line 169
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   def test_visit_filterfunc_is_string(self):
       l = []
       for i in self.root.visit('*dir'):
->         l.append(i.relto(self.root))
       assert len(l), 2
       assert "sampledir" in l
       assert "otherdir" in l