def test_option_some_map_piped():
xs = Some(42)
ys: Option[int] = xs.pipe(option.map(lambda x: x + 1))
for y in ys:
assert y == 43
break
else:
assert False
def test_option_some_map_piped():
xs = Some(42)
mapper: Callable[[int], int] = lambda x: x + 1
ys: Option[int] = xs.pipe(option.map(mapper))
for y in ys.match(Some):
assert y == 43
break
else:
assert False
def test_option_some_bind_piped():
binder: Callable[[int], Option[int]] = lambda x: Some(x + 1)
xs = Some(42)
ys = xs.pipe(option.bind(binder), )
for value in ys.match(Some):
assert value == 43
break
else:
assert False
def test_option_some_bind_piped():
xs = Some(42)
ys = xs.pipe(option.bind(lambda x: Some(x + 1)), )
assert ys.match(
Some,
lambda some: some.value == 43,
_,
False,
)