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Add test for randomize_genome function of individual classes #190

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Jul 20, 2020
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Add test for randomize_genome function of individual classes #190

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78b77af
Add test for randomize_genome function of individual classes
mschmidt87 Jul 15, 2020
a43c223
In Population.generate_random_individual use randomize_genome method …
mschmidt87 Jul 16, 2020
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5 changes: 1 addition & 4 deletions cgp/population.py
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Original file line number Diff line number Diff line change
Expand Up @@ -84,7 +84,6 @@ def get_idx_for_new_individual(self) -> int:
def generate_random_individual(self) -> IndividualBase:
if isinstance(self._genome_params, dict):
genome: Genome = Genome(**self._genome_params)
genome.randomize(self.rng)
individual_s = IndividualSingleGenome(
fitness=None, genome=genome
) # type: IndividualBase # indicates to mypy that
Expand All @@ -93,15 +92,13 @@ def generate_random_individual(self) -> IndividualBase:
ind = individual_s
else:
genomes: List[Genome] = [Genome(**gd) for gd in self._genome_params]
for g in genomes:
g.randomize(self.rng)
individual_m = IndividualMultiGenome(
fitness=None, genome=genomes
) # type: IndividualBase # indicates to mypy that
# individual_m is an instance of a child class of
# IndividualBase
ind = individual_m

ind.randomize_genome(self.rng)
ind.idx = self.get_idx_for_new_individual()
return ind

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14 changes: 14 additions & 0 deletions test/test_individual.py
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Expand Up @@ -294,3 +294,17 @@ def test_update_parameters_from_torch_class_does_not_reset_fitness_for_unused_pa
g = _unpack_evaluation(individual.to_func(), individual_type)
x = 2.0
assert g([x])[0] == pytest.approx(x ** 2)


@pytest.mark.parametrize("individual_type", ["SingleGenome", "MultiGenome"])
def test_individual_randomize_genome(individual_type, rng_seed):
rng = np.random.RandomState(rng_seed)
primitives = (cgp.Add, cgp.Mul)
genome = cgp.Genome(1, 1, 2, 1, 1, primitives)
genome.randomize(rng)

dna_old = list(genome.dna)
individual = _create_individual(genome, individual_type=individual_type)

individual.randomize_genome(rng)
assert dna_old != _unpack_genome(individual, individual_type)