def test_same_list_shuffled_is_not_different_nested(path, xs):
"""No difference between two lists with same values in different order.
This variant is for when there are nested lists, to catch loop / mutation
issues.
"""
ys = copy.deepcopy(xs)
random.shuffle(ys)
assert list(diff_lists(path, xs, ys)) == []
def test_diff_lists_doesnt_mutate_inputs_nested_lists(path, items):
xs, ys = items
orig_xs = copy.deepcopy(xs)
orig_ys = copy.deepcopy(ys)
diff_lists(path, xs, ys)
assert xs == orig_xs and ys == orig_ys
def test_diff_lists_doesnt_mutate_inputs(path, items):
xs, ys = items
orig_xs = list(xs)
orig_ys = list(ys)
diff_lists(path, xs, ys)
assert xs == orig_xs and ys == orig_ys
def test_added_items_appear_in_diff(path, base, extension):
xs = list(base)
xs.extend([None] * len(extension))
ys = list(base)
ys.extend(extension)
assert len(list(diff_lists(path, xs, ys))) == len(extension)
def test_same_list_shuffled_is_not_different(path, xs):
"""No difference between two lists with same values in different order."""
ys = list(xs)
random.shuffle(ys)
assert list(diff_lists(path, xs, ys)) == []
def test_diff_lists_equal(path, xs):
"""No difference between a list and itself."""
assert list(diff_lists(path, xs, xs)) == []