def test_recombine_dna_ocx1_preserves_order(self):
dna1 = ga.UniqueIntDNA(10) # 0, 1, 2, 3, ...
dna2 = ga.UniqueIntDNA(10)
dna2._data.reverse() # 9, 8, 7, 6, ...
ga.recombine_dna_ocx1(dna1, dna2, 0, 3)
assert list(dna1) == [9, 8, 7, 0, 1, 2, 3, 4, 5, 6]
assert list(dna2) == [0, 1, 2, 9, 8, 7, 6, 5, 4, 3]
def test_reset_data(self):
dna = ga.UniqueIntDNA(10)
dna.reset(range(9, -1, -1))
assert len(dna) == 10
assert dna.is_valid is True
assert dna[0] == 9
assert dna[9] == 0
def test_tournament_selection():
candidates = [ga.UniqueIntDNA(10) for _ in range(10)]
for index, dna in enumerate(candidates):
dna.fitness = index
selection = ga.TournamentSelection(2)
selection.reset(candidates)
result = list(selection.pick(2))
assert len(result) == 2
result = list(selection.pick(3))
assert len(result) == 3
def test_init_invalid_values(self):
with pytest.raises(TypeError):
ga.UniqueIntDNA([0, 1, 2, 2])
def test_init_values(self):
dna = ga.UniqueIntDNA([0, 1, 2, 3])
assert dna.is_valid is True
assert list(dna) == [0, 1, 2, 3]
def test_init_value(self):
dna = ga.UniqueIntDNA(10)
assert dna.is_valid is True
assert list(dna) == list(range(10))
def test_scramble_mutate():
dna = ga.UniqueIntDNA(10)
mutate = ga.ScrambleMutate(5)
mutate.mutate(dna, 1.0)
assert list(dna) != list(ga.UniqueIntDNA(10))
assert len(set(dna)) == 10
def test_reverse_mutate():
dna = ga.UniqueIntDNA(10)
mutate = ga.ReverseMutate(3)
mutate.mutate(dna, 1.0)
assert list(dna) != list(ga.UniqueIntDNA(10))
assert len(set(dna)) == 10
def test_subscription_setter(self):
dna = ga.UniqueIntDNA(10)
dna[-3:] = [1, 2, 3]
assert len(dna) == 10
assert dna[-4:] == [6, 1, 2, 3]
assert dna.is_valid is False