def test_add(self):
new_one = GAEngine(TesterIndividual())
new_one.initialize_population(50)
last_one = self.ga_engine + new_one
self.assertEqual(POPULATION_SIZE + 50, len(last_one),
"Add bad implemented")
self.assertEqual(
len(self.ga_engine) + len(new_one), len(last_one),
"Add bad implemented")
class GAEngineTest(TestCase):
def setUp(self) -> None:
"""
Sets up unittest
"""
tester = TesterIndividual()
self.ga_engine = GAEngine(tester)
self.ga_engine.initialize_population(POPULATION_SIZE)
def test_initialize_population(self):
actual_population = self.ga_engine.population
self.assertEqual(POPULATION_SIZE, len(actual_population),
"Population size mismatch")
self.assertEqual(POPULATION_SIZE, len(self.ga_engine),
"Population size mismatch")
for _ in range(RANDOM_TEST):
i = randint(0, POPULATION_SIZE - 1)
self.assertIsInstance(actual_population[i], TesterIndividual,
"Population of unexpected class")
def test_evaluate_fitness(self):
self.assertLessEqual(self.ga_engine.solution_found(0.0), False,
"Not always return false if not evaluated")
self.ga_engine.evaluate_fitness()
fitness = self.ga_engine.fitness
self.assertEqual(len(fitness), POPULATION_SIZE,
"Wrong number of fitness calculated")
expected_score = 90
self.assertFalse(self.ga_engine.solution_found(expected_score),
"Solution not found")
expected_score = 70
self.assertTrue(self.ga_engine.solution_found(expected_score),
"Solution found")
def test_selection(self):
expected_score = 50
self.ga_engine.evaluate_fitness()
old_score = sum(self.ga_engine.fitness) / len(self.ga_engine)
self.ga_engine.selection(expected_score)
actual_population = self.ga_engine.population
self.assertLess(POPULATION_SIZE, len(actual_population),
"Population did not duplicate on selection")
self.assertEqual(POPULATION_SIZE * 2, len(actual_population),
"Population did not duplicate on selection")
# Due to fitness is random:
new_score = sum([x.my_fitness for x in self.ga_engine.population
]) / len(self.ga_engine)
self.assertGreater(new_score, old_score, "Score did not improve")
def test_reproduction(self):
expected_score = 40
self.ga_engine.evaluate_fitness()
self.ga_engine.selection(expected_score)
self.assertLess(POPULATION_SIZE, len(self.ga_engine),
"Mismatch population size")
self.ga_engine.reproduction()
self.assertEqual(POPULATION_SIZE, len(self.ga_engine),
"Reproduction failed")
self.ga_engine.evaluate_fitness()
def test_add(self):
new_one = GAEngine(TesterIndividual())
new_one.initialize_population(50)
last_one = self.ga_engine + new_one
self.assertEqual(POPULATION_SIZE + 50, len(last_one),
"Add bad implemented")
self.assertEqual(
len(self.ga_engine) + len(new_one), len(last_one),
"Add bad implemented")
def test_robust_operations(self):
with self.assertRaises(RuntimeError):
self.ga_engine.selection()
self.ga_engine.population.clear()
with self.assertRaises(RuntimeError):
self.ga_engine.evaluate_fitness()
odd = 13
self.ga_engine.initialize_population(odd)
self.ga_engine.reproduction()
expected = int(odd / 2) + 1
self.assertEqual(expected, len(self.ga_engine))
self.ga_engine.population.clear()
self.assertRaises(RuntimeError,
self.ga_engine.run_to_equilibrium,
POPULATION_SIZE,
10,
use_prev=True)
def test_initialize_again(self):
self.assertEqual(POPULATION_SIZE, len(self.ga_engine),
"Population size mismatch")
self.ga_engine.initialize_population(100)
self.assertEqual(100, len(self.ga_engine),
"Population not over-generated")
def test_next_generation(self):
self.ga_engine.evaluate_fitness()
self.assertEqual(1, self.ga_engine.generation,
"Wrong first Generation")
self.ga_engine.next_generation()
self.assertEqual(100, len(self.ga_engine), "Population mismatch")
self.assertEqual(2, self.ga_engine.generation,
"Wrong second Generation")
def test_next_generation_save(self):
self.ga_engine.evaluate_fitness(register=True)
self.assertEqual(1, self.ga_engine.generation,
"Wrong first generation")
self.ga_engine.next_generation(register=True)
self.assertEqual(100, len(self.ga_engine), "Population mismatch")
self.assertEqual(2, self.ga_engine.generation,
"Wrong second Generation")
result = self.ga_engine.result
result._ready = True
self.assertEqual(2, len(result), "Mismatch result size")
def test_run_no_solution(self):
expected = 1e10 # unreachable
max_generation = 100
result = self.ga_engine.run_to_reach(expected,
0,
10,
max_generation=max_generation)
generations = result.get_generations()[-1]
found = result.found_solution
self.assertEqual(max_generation, generations,
"Not stop when supposed to")
self.assertFalse(found, "Found it")
def test_run_solution(self):
expected = 50 # reachable
result = self.ga_engine.run_to_reach(expected, 0, 100)
generations = result.get_generations()[-1]
self.assertTrue(result.found_solution, "Solution not found")
self.assertLessEqual(generations, 1000, "Run more than permitted")
def test_run_equilibrium(self):
self.ga_engine.the_first_one = TesterEquilibrium()
result = self.ga_engine.run_to_equilibrium(100, 10)
generations = result.get_generations()[-1]
found = result.found_solution
self.assertEqual(10, generations, "Not stop when supposed to")
self.assertTrue(found, "Not found it")
def test_run_fixed_generation(self):
expected = 0.0 # reachable
max_generation = 10
self.ga_engine.the_first_one = TesterEquilibrium()
result = self.ga_engine.run_fixed_generation(100, max_generation)
generations = result.get_generations()[-1]
first_score = result.get_max_scores()[0]
found = result.found_solution
self.assertEqual(max_generation, generations,
"Not stop when supposed to")
self.assertTrue(found, "Not found it")
self.assertGreaterEqual(EPSILON, abs(expected - first_score),
"Fitness miscalculated")
def setup_use_prev(self):
"""
Generate a previous generation to use on a new run algorithm
"""
self.ga_engine.evaluate_fitness()
self.ga_engine.next_generation()
self.ga_engine.next_generation()
self.ga_engine.next_generation()
self.assertEqual(4, self.ga_engine.generation,
"Problem with setup prev generation")
def test_run_solution_with_prev(self):
self.setup_use_prev()
expected = 1e10 # unreachable
max_generation = 10
self.ga_engine.run_to_reach(expected,
0,
10,
max_generation=max_generation,
use_prev=True)
self.assertNotEqual(max_generation, self.ga_engine.generation,
"Not used previous generation")
self.assertEqual(max_generation + 3, self.ga_engine.generation,
"Wrong number of generation used")
def test_run_equilibrium_with_prev(self):
self.setup_use_prev()
max_generation = 10
self.ga_engine.run_to_equilibrium(100,
10,
max_generation=max_generation,
use_prev=True)
self.assertNotEqual(max_generation, self.ga_engine.generation,
"Not used previous generation")
self.assertEqual(max_generation + 3, self.ga_engine.generation,
"Wrong number of generation used")
def test_run_fixed_generation_with_prev(self):
self.setup_use_prev()
max_generation = 10
self.ga_engine.run_fixed_generation(100, max_generation, use_prev=True)
self.assertNotEqual(max_generation, self.ga_engine.generation,
"Not used previous generation")
self.assertEqual(max_generation + 3, self.ga_engine.generation,
"Wrong number of generation used")