..............E.

======================================================================

ERROR: testSum (tester.ProblemTests)

----------------------------------------------------------------------

Traceback (most recent call last):

  File ".../test.py", line 105, in testSum

    self.assertRaises(ValueError, Interval.__add__, Interval(7, 99), Interval(101, 200))

  File "unittest.py", line 320, in failUnlessRaises

    callableObj(*args, **kwargs)

  File ".../fn44019/2007-03-28 14:31:11/user.py", line 90, in __add__

    raise("ValueError")

ValueError



----------------------------------------------------------------------

Ran 16 tests in 0.009s



FAILED (errors=1)