def test_solution_comparison_maximization(self):
sol1 = SolutionTuple(SOLUTIONS[0][0], SOLUTIONS[0][1])
sol2 = SolutionTuple(SOLUTIONS[1][0], SOLUTIONS[1][1])
sol3 = SolutionTuple(SOLUTIONS[2][0], SOLUTIONS[2][1])
# test ordering
self.assertEqual(sol1.__cmp__(sol2), -1)
self.assertEqual(sol1.__cmp__(sol1), 0)
self.assertEqual(sol1.__cmp__(sol3), 1)
self.assertTrue(sol1 < sol2)
self.assertTrue(sol1 == sol1)
self.assertTrue(sol1 > sol3)
# test gt and lt
self.assertTrue(sol1.__lt__(sol2))
self.assertTrue(sol1.__gt__(sol3))
self.assertFalse(sol1.__lt__(sol1))
self.assertFalse(sol1.__gt__(sol1))
self.assertFalse(sol2.__lt__(sol1))
self.assertFalse(sol3.__gt__(sol1))
# testing issubset
self.assertTrue(sol1.issubset(sol2), msg="Solution 1 is subset of Solution 2")
self.assertFalse(sol2.issubset(sol1), msg="Solution 2 is not subset of Solution 1")
self.assertTrue(sol3.issubset(sol2), msg="Solution 3 is subset of Solution 2")
self.assertFalse(sol2.issubset(sol3), msg="Solution 2 is not subset of Solution 3")
self.assertFalse(sol1.issubset(sol3), msg="Solution 1 is subset of Solution 3")
self.assertFalse(sol2.issubset(sol3), msg="Solution 3 is not subset of Solution 1")
# test difference
l = len(sol2.symmetric_difference(sol1))
self.assertEqual(l, 1, msg="Difference between Solution 2 and 1 is (%s)" % sol2.symmetric_difference(sol1))
l = len(sol3.symmetric_difference(sol2))
self.assertEqual(l, 1, msg="Difference between Solution 3 and 1 is (%s)" % sol3.symmetric_difference(sol2))
l = len(sol3.symmetric_difference(sol1))
self.assertEqual(l, 2, msg="Difference between Solution 1 and 3 is (%s)" % sol3.symmetric_difference(sol1))
self.assertTrue(sol1.improves(sol2), msg="Solution 1 is better than Solution 2")
self.assertTrue(sol3.improves(sol2), msg="Solution 3 is better than Solution 2")
self.assertFalse(sol3.improves(sol1), msg="Solution 3 does not improve Solution 1")
self.assertFalse(sol2.improves(sol1), msg="Solution 2 does not improve Solution 1")
self.assertFalse(sol2.improves(sol3), msg="Solution 2 does not improve Solution 3")
