def test_mutate_for_100_percent_chance_for_add_connection_mutation(self):
# probability for each mutation
mutation_coefficients = dict(add_connection=1.0, split_connection=0.0, change_weight=0.0,
new_connection_abs_max_weight=5.0, max_weight_mutation=5.0)
weight = 0.0
genome = Genome([[1, 3, weight, True], [1, 4, weight, True], [2, 3, weight, True]], 2, 2)
genome.mutate(mutation_coefficients)
self.assertEqual([(1, 3), (1, 4), (2, 3), (2, 4)], genome.get_connections_ids())
def test_mutate_for_0_percent_chance_for_any_mutation(self):
# probability for each mutation
mutation_coefficients = dict(add_connection=0.0, split_connection=0.0, change_weight=0.0,
new_connection_abs_max_weight=5.0, max_weight_mutation=5.0)
weight = 0.0
genome = Genome([[1, 2, weight, True]], 1, 1)
genome.mutate(mutation_coefficients)
# add new connection/node mutation
self.assertEqual([(1, 2)], genome.get_connections_ids())
# weight mutation
(source_id, dest_id, new_weight, enable) = genome.get_connections()[0]
self.assertAlmostEqual(weight, new_weight)
def test_mutate_split_conneciton_to_genome_with_disabled_connection(self):
genome = Genome([[1, 2, 0, False]], 1, 1)
genome._mutate_split_connection()
self.assertEqual([(1, 2)], genome.get_connections_ids())
def test_mutate_new_connection_to_not_full_genome(self):
full_genome = Genome([[1, 3, 0, True], [1, 4, 0, True], [2, 3, 0, True]], 2, 2)
full_genome._mutate_new_connection(1.0)
self.assertEqual([(1, 3), (1, 4), (2, 3), (2, 4)], full_genome.get_connections_ids())
def test_get_connections_ids(self):
genome = Genome([[1, 3, 0, True], [1, 4, 0, True], [2, 3, 0, True], [2, 4, 0, True]], 2, 2)
genome2 = Genome([[1, 4, 0, True], [1, 2, 0, True], [1, 3, 0, True]], 1, 3)
self.assertEqual(genome.get_connections_ids(), [(1, 3), (1, 4), (2, 3), (2, 4)])
self.assertEqual(genome2.get_connections_ids(), [(1, 2), (1, 3), (1, 4)])
