Some tests used incorrect order assertEqual(observed, expected).
The correct order expected by testtools is...
def assertEqual(self, expected, observed, message=''):
"""Assert that 'expected' is equal to 'observed'.
:param expected: The expected value.
:param observed: The observed value.
:param message: An optional message to include in the error.
"""
This patch will fix it.
Change-Id: I2d311fc9f774e7f61e52c40aefb1beb54244e9ba
525bb1ff05