def test_result_traverse_ok(xs: List[int]):
ys: List[Result[int, str]] = [Ok(x) for x in xs]
zs = sequence(ys)
res = zs.match(Ok, lambda ok: sum(ok.value), Error,
lambda error: throw(error.error))
assert res == sum(xs)
def test_result_traverse_ok(xs: List[int]):
ys: List[Result[int, str]] = [Ok(x) for x in xs]
zs = sequence(ys)
for value in zs.match(Ok[List[int], str]):
assert sum(value) == sum(xs)
break
else:
assert False
def test_result_traverse_error(xs: List[int]):
error = "Do'h"
ys: List[Result[int, str]] = [
Ok(x) if i == 3 else Error(error) for x, i in enumerate(xs)
]
zs = sequence(ys)
for err in zs.match(Error[int, str]):
assert err == error
def test_result_traverse_error(xs: List[int]):
error = "Do'h"
ys: List[Result[int, str]] = [
Ok(x) if i == 3 else Error(error) for x, i in enumerate(xs)
]
zs = sequence(ys)
res = zs.match(Ok, lambda ok: "", Error, lambda error: error.error)
assert res == error