call site 6 for path.svnurl.join
path/svn/testing/svntestbase.py - line 163
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   def test_repocache_outdated(self):
       repocache = cache.RepoCache()
       repocache.put(self.root.strpath, 42, timestamp=0)
->     url, rev = repocache.get(self.root.join('test').strpath)
       assert rev == -1
       assert url == self.root.strpath