Mox ExpectedMethodCallsError's _str__ method prints out one character per line

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See: 
http://stackoverflow.com/questions/6124180/python-nose-tests-actually-the-error-
is-from-mox-print-out-errors-one-character

My Fix:

Adding this line to the top of str method of ExpectedMethodCallsError in mox.py 
fixes the problem (or this symptom anyway):

if isinstance(self._expected_methods, str):
  self._expected_methods = self._expected_methods.split("\n")

Original issue reported on code.google.com by [email protected] on 26 May 2011 at 9:01