1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
import unittest
from unittest import mock
from deap.tools.mutation import mutInversion
class MutationTest(unittest.TestCase):
def test_mutInverstion_size_zero_chromosome_returns_unchanged_chromosome_in_tuple(self):
chromosome = []
expected = []
self.assertEqual((expected,), mutInversion(chromosome))
def test_mutInversion_size_one_chromosome_returns_unchanged_chromosome_in_tuple(self):
chromosome = ["a"]
expected = ["a"]
self.assertEqual((expected,), mutInversion(chromosome))
@mock.patch("random.randrange")
def test_mutInversion_same_random_indices_returns_unchanged_chromosome_in_tuple(self, mock_randrange):
mock_randrange.side_effect = [2, 2]
chromosome = ["a", "b", "c", "d", "e"]
expected = ["a", "b", "c", "d", "e"]
self.assertEqual((expected,), mutInversion(chromosome))
@mock.patch("random.randrange")
def test_mutInversion_difference_of_one_random_indices_returns_unchanged_chromosome_in_tuple(self, mock_randrange):
mock_randrange.side_effect = [2, 3]
chromosome = ["a", "b", "c", "d", "e"]
expected = ["a", "b", "c", "d", "e"]
self.assertEqual((expected,), mutInversion(chromosome))
@mock.patch("random.randrange")
def test_mutInversion_full_length_random_indices_returns_reversed_chromosome_in_tuple(self, mock_randrange):
mock_randrange.side_effect = [0, 5]
chromosome = ["a", "b", "c", "d", "e"]
expected = ["e", "d", "c", "b", "a"]
self.assertEqual((expected,), mutInversion(chromosome))
@mock.patch("random.randrange")
def test_mutInversion_general_case_returns_correctly_mutated_chromosome_in_tuple(self, mock_randrange):
mock_randrange.side_effect = [1, 4]
chromosome = ["a", "b", "c", "d", "e"]
expected = ["a", "d", "c", "b", "e"]
self.assertEqual((expected,), mutInversion(chromosome))
|
