class ChromosomeTestCase(unittest.TestCase):
chromosome = None
def setUp(self):
self.chromosome_manager = ChromosomeManager(42)
self.chromosome = Chromosome(self.chromosome_manager)
def test_str(self):
self.chromosome.binary_string = '010111000011101100101010011111010100'
self.assertEqual(str(self.chromosome), '010111000011101100101010011111010100')
def test_evaluation_with_correct_data(self):
self.chromosome.binary_string = '010111000011101100101010011111010100'
self.chromosome.evaluate(5)
self.assertEqual(self.chromosome.result, 5)
self.assertEqual(self.chromosome.score, 1e18)
def test_evaluation_with_incorrect_data(self):
self.chromosome.binary_string = '111111111111111111111111111111111111'
self.chromosome.evaluate(20)
self.assertEqual(self.chromosome.result, 0)
self.assertEqual(self.chromosome.score, 0.05)
def test_evaluation_with_correct_and_incorrect_data(self):
self.chromosome.binary_string = '011011100001101010110101100110111100'
self.chromosome.evaluate(10)
self.assertEqual(self.chromosome.result, 11)
self.assertEqual(self.chromosome.score, 1)
def test_evaluation_with_zero_division(self):
self.chromosome.binary_string = '001011111111111111111111110111110000'
self.chromosome.evaluate(5)
self.assertEqual(self.chromosome.result, 2)
self.assertEqual(self.chromosome.score, 1 / 3)
def test_fill_with_random_values(self):
self.chromosome.fill_with_random_values()
self.assertEqual(len(self.chromosome.binary_string), 36)
for char in self.chromosome.binary_string:
self.assertTrue(0 <= int(char) <= 1)
def test_mutate(self):
original_binary_string = '010111000011101100101010011111010100'
self.chromosome.binary_string = original_binary_string
mutated_chars = self.chromosome.mutate(0.1)
levenshtein_distance = self._get_levenshtein_distance(original_binary_string, self.chromosome.binary_string)
self.assertEqual(mutated_chars, levenshtein_distance)
def test_mutate_full(self):
original_binary_string = '010111000011101100101010011111010100'
reversed_string = '101000111100010011010101100000101011'
self.chromosome.binary_string = original_binary_string
mutated_chars = self.chromosome.mutate(1)
self.assertEqual(mutated_chars, 36)
self.assertEqual(self.chromosome.binary_string, reversed_string)
def _get_levenshtein_distance(self, string1, string2):
self.assertEqual(len(string1), len(string2))
length = len(string1)
different_chars_count = 0
for i in range(0, length):
if string1[i] != string2[i]:
different_chars_count += 1
return different_chars_count
