def test_should_compare_works_properly_case4(self):
""" Case 4: solution1.attribute > solution2.attribute (highest is best)
"""
solution1 = Solution(1, 1)
solution2 = Solution(1, 1)
solution1.attributes["attribute"] = 1.0
solution2.attributes["attribute"] = 0.0
comparator = SolutionAttributeComparator("attribute", False)
self.assertEqual(-1, comparator.compare(solution1, solution2))
class SolutionAttributeComparatorTestCases(unittest.TestCase):
def setUp(self):
self.comparator = SolutionAttributeComparator("attribute")
def test_should_compare_return_zero_if_the_first_solution_has_no_the_attribute(
self):
solution1 = Solution(1, 1)
solution2 = Solution(1, 1)
solution2.attributes["attribute"] = 1.0
self.assertEqual(0, self.comparator.compare(solution1, solution2))
def test_should_compare_return_zero_if_the_second_solution_has_no_the_attribute(
self):
solution1 = Solution(1, 1)
solution2 = Solution(1, 1)
solution1.attributes["attribute"] = 1.0
self.assertEqual(0, self.comparator.compare(solution1, solution2))
def test_should_compare_return_zero_if_none_of_the_solutions_have_the_attribute(
self):
solution1 = Solution(1, 1)
solution2 = Solution(1, 1)
self.assertEqual(0, self.comparator.compare(solution1, solution2))
def test_should_compare_return_zero_if_both_solutions_have_the_same_attribute_value(
self):
solution1 = Solution(1, 1)
solution2 = Solution(1, 1)
solution1.attributes["attribute"] = 1.0
solution2.attributes["attribute"] = 1.0
self.assertEqual(0, self.comparator.compare(solution1, solution2))
def test_should_compare_works_properly_case1(self):
""" Case 1: solution1.attribute < solution2.attribute (lowest is best)
"""
solution1 = Solution(1, 1)
solution2 = Solution(1, 1)
solution1.attributes["attribute"] = 0.0
solution2.attributes["attribute"] = 1.0
self.assertEqual(-1, self.comparator.compare(solution1, solution2))
def test_should_compare_works_properly_case2(self):
""" Case 2: solution1.attribute > solution2.attribute (lowest is best)
"""
solution1 = Solution(1, 1)
solution2 = Solution(1, 1)
solution1.attributes["attribute"] = 1.0
solution2.attributes["attribute"] = 0.0
self.assertEqual(1, self.comparator.compare(solution1, solution2))
def test_should_compare_works_properly_case3(self):
""" Case 3: solution1.attribute < solution2.attribute (highest is best)
"""
comparator = SolutionAttributeComparator("attribute", False)
solution1 = Solution(1, 1)
solution2 = Solution(1, 1)
solution1.attributes["attribute"] = 0.0
solution2.attributes["attribute"] = 1.0
self.assertEqual(1, comparator.compare(solution1, solution2))
def test_should_compare_works_properly_case4(self):
""" Case 4: solution1.attribute > solution2.attribute (highest is best)
"""
solution1 = Solution(1, 1)
solution2 = Solution(1, 1)
solution1.attributes["attribute"] = 1.0
solution2.attributes["attribute"] = 0.0
comparator = SolutionAttributeComparator("attribute", False)
self.assertEqual(-1, comparator.compare(solution1, solution2))