F..F..F..EF...F.

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

ERROR: testLeftRight (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 57, in testLeftRight

    self.assertEqual(-5.0, i.left())

TypeError: 'float' object is not callable



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

FAIL: testCmp (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 110, in testCmp

    self.assertTrue(Interval(7, 22) > Interval(8, 22))

AssertionError



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

FAIL: testExpand (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 62, in testExpand

    self.assertEqual(Interval(-3, 10), i.expand(right=-1))

AssertionError: Interval(-3.0,10.0) != (-3.0, 10.0)



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

FAIL: testIntersect (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 67, in testIntersect

    self.assertEqual(Interval(6, 11), Interval(5, 11).intersect(Interval(6, 12)))

AssertionError: Interval(6.0,11.0) != (6.0, 11.0)



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

FAIL: testLen (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 99, in testLen

    self.assertEqual(7, len(Interval(-2, 4.1)))

AssertionError: 7 != 6



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

FAIL: testSum (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 102, in testSum

    self.assertEqual(Interval(None, None), Interval(None, 11) + Interval(10, None))

AssertionError: Interval(None,None) != (None, None)



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

Ran 16 tests in 0.009s



FAILED (failures=5, errors=1)