def test_can_add_two_chromosomes():
a = random_bitarray_chromosome()
b = random_bitarray_chromosome()
assert(0 < (a+b).fitness() <= 8)
def test_mutate():
c = random_bitarray_chromosome()
before = c.fitness()
after = c.mutate().fitness()
assert(abs(before - after) == 1)
def test_cant_add_int_to_chromosome():
with pytest.raises(TypeError):
random_bitarray_chromosome() + 1
def test_random_chromosome():
assert(0 <= max([random_bitarray_chromosome().fitness() for i in range(1000)]) <= 8)