def test_random_int_between_a_and_b(self):
true_rando = Random.random_int_between_a_and_b(1, 5)
self.assertLessEqual(true_rando, 5)
self.assertLessEqual(1, true_rando)
Random.begin_test()
Random.set_test_value_for("random_int_between_a_and_b", 1)
Random.set_test_value_for("random_int_between_a_and_b", 2)
Random.set_test_value_for("random_int_between_a_and_b", 3)
self.assertEqual(Random.random_int_between_a_and_b(1, 5), 3)
self.assertEqual(Random.random_int_between_a_and_b(1, 5), 2)
self.assertEqual(Random.random_int_between_a_and_b(1, 5), 1)
Random.end_test()
def emo_phase(self):
for _ in range(Constants.NSGA2_NUM_GENES_MUTATING):
random_variable = Random.random_int_between_a_and_b(
0,
self.problem.num_variables() - 1)
new_value = Random.random_choice(
self.problem.variables[random_variable].domain.values)
self.problem.set_value(random_variable, new_value)
def swap_half_genes(self, other):
variables = [
Random.random_int_between_a_and_b(0,
self.problem.num_variables() - 1)
for _ in range(floor(self.problem.num_variables() / 2))
]
for v in variables:
if self.problem.get_value(v) != other.problem.get_value(v):
original = self.problem.get_value(v)
self.problem.set_value(v, other.problem.get_value(v))
if not self.problem.consistent():
self.problem.set_value(v, original)
original = other.problem.get_value(v)
other.problem.set_value(v, self.problem.get_value(v))
if not other.problem.consistent():
other.problem.set_value(v, original)
