def test_prints_each_iterable_item_using_str():
mock_stdout = Mock(spec_set=sys.stdout)
_112233_pype().print(lambda left, right: str(left),
file=mock_stdout,
now=True)
mock_stdout.write.assert_has_calls(
[call('1'),
call('\n'),
call('2'),
call('\n'),
call('3'),
call('\n')])
def test_zips_with_output_of_function_taking_unpacked_items():
assert tuple(
_112233_pype().zip_with(lambda left, right: left + right)) == (((1, 1),
2),
((2, 2),
4),
((3, 3),
6))
def test_splits_before_unpacked_items_fulfil_predicate():
assert tuple(map(tuple, _112233_pype().split(lambda left, right: left == 2, 'before'))) \
== (_112233[0:1], _112233[1:])
def test_splits_after_unpacked_items_fulfil_predicate():
assert tuple(
map(tuple,
_112233_pype().split(lambda left, right: left == 2))) == (
_112233[0:2], _112233[2:])
def test_selects_unpacked_items_that_fulfil_predicate():
assert tuple(
_112233_pype().select(lambda left, right: left < 2)) == _112233[0:1]
def test_partitions_unpacked_items_according_to_predicate_into_a_tuple__of_pipes(
):
assert tuple(
map(tuple,
_112233_pype().partition(lambda left, right: left < 2))) == (
_112233[1:], (_112233[0:1]))
def test_maps_unpacked_items():
assert tuple(_112233_pype().map(lambda left, right: left * 2)) == (2, 4, 6)
def test_rejects_unpacked_items_until_condition_is_true():
assert tuple(_112233_pype().drop_while(
lambda left, right: left != 2)) == _112233[1:]
def test_produces_a_side_effect_per_unpacked_item():
side_effect = create_autospec(lambda left, right: None)
assert tuple(_112233_pype().do(side_effect)) == _112233
side_effect.assert_has_calls([call(1, 1), call(2, 2), call(3, 3)])
def test_broadcasts_unpacked_items():
assert list(_112233_pype().broadcast(lambda left, right: [left + 1, right + 2])) == \
[((1, 1), 2), ((1, 1), 3), ((2, 2), 3), ((2, 2), 4), ((3, 3), 4), ((3, 3), 5)]
def test_takes_items_while_predicate_with_unpacked_is_true():
assert tuple(_112233_pype().take_while(
lambda left, right: left < 3)) == _112233[0:2]
def test_unzipping_is_deferred():
pipe = _112233_pype()
pipe.unzip()
assert tuple(pipe) == _112233
def test_unzipping_does_not_consume_pipe():
pipe = _112233_pype()
next(iter(tuple(pipe.unzip())[0]))
assert tuple(pipe) == _112233[1:]
