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47 lines
1.9 KiB
Python
47 lines
1.9 KiB
Python
import unittest
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import os
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from tabu_search import generate_neighbours, generate_first_solution, find_neighborhood, tabu_search
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TEST_FILE = os.path.join(os.path.dirname(__file__), './tabu_test_data.txt')
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NEIGHBOURS_DICT = {'a': [['b', '20'], ['c', '18'], ['d', '22'], ['e', '26']],
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'c': [['a', '18'], ['b', '10'], ['d', '23'], ['e', '24']],
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'b': [['a', '20'], ['c', '10'], ['d', '11'], ['e', '12']],
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'e': [['a', '26'], ['b', '12'], ['c', '24'], ['d', '40']],
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'd': [['a', '22'], ['b', '11'], ['c', '23'], ['e', '40']]}
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FIRST_SOLUTION = ['a', 'c', 'b', 'd', 'e', 'a']
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DISTANCE = 105
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NEIGHBOURHOOD_OF_SOLUTIONS = [['a', 'e', 'b', 'd', 'c', 'a', 90],
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['a', 'c', 'd', 'b', 'e', 'a', 90],
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['a', 'd', 'b', 'c', 'e', 'a', 93],
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['a', 'c', 'b', 'e', 'd', 'a', 102],
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['a', 'c', 'e', 'd', 'b', 'a', 113],
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['a', 'b', 'c', 'd', 'e', 'a', 119]]
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class TestClass(unittest.TestCase):
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def test_generate_neighbours(self):
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neighbours = generate_neighbours(TEST_FILE)
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self.assertEquals(NEIGHBOURS_DICT, neighbours)
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def test_generate_first_solutions(self):
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first_solution, distance = generate_first_solution(TEST_FILE, NEIGHBOURS_DICT)
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self.assertEquals(FIRST_SOLUTION, first_solution)
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self.assertEquals(DISTANCE, distance)
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def test_find_neighbours(self):
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neighbour_of_solutions = find_neighborhood(FIRST_SOLUTION, NEIGHBOURS_DICT)
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self.assertEquals(NEIGHBOURHOOD_OF_SOLUTIONS, neighbour_of_solutions)
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def test_tabu_search(self):
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best_sol, best_cost = tabu_search(FIRST_SOLUTION, DISTANCE, NEIGHBOURS_DICT, 4, 3)
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self.assertEquals(['a', 'd', 'b', 'e', 'c', 'a'], best_sol)
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self.assertEquals(87, best_cost)
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