call site 12 for path.svnwc.write
path/svn/testing/test_wccommand.py - line 290
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   def test_commit_return_value(self):
       root = self.root
       testfile = root.join('test.txt').ensure(file=True)
->     testfile.write('test')
       rev = root.commit('testing')
       assert type(rev) == int
   
       anotherfile = root.join('another.txt').ensure(file=True)
       anotherfile.write('test')
       rev2 = root.commit('testing more')
       assert type(rev2) == int
       assert rev2 == rev + 1