mirror of https://github.com/01-edu/public.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
1.8 KiB
75 lines
1.8 KiB
Promise.race = undefined |
|
// /*/ // ⚡ |
|
export const tests = [] |
|
const t = (f) => tests.push(f) |
|
|
|
//// RACE |
|
t(async ({ eq, wait }) => { |
|
// empty array should never resolve, just hang, forever... |
|
let notCalled = true |
|
race([]).then(() => (notCalled = false)) |
|
await wait(5) |
|
return eq(notCalled, true) |
|
}) |
|
|
|
t(async ({ eq, wait }) => |
|
// it should return the first value to resolve |
|
eq(await race([Promise.resolve(2), wait(5).then(() => 5)]), 2) |
|
) |
|
|
|
t(async ({ eq, wait }) => { |
|
// it should not wait for every results to wait |
|
const start = Date.now() |
|
const result = await race([Promise.resolve(2), wait(50)]) |
|
if (Date.now() - start > 5) throw Error("that's too long !") |
|
return eq(result, 2) |
|
}) |
|
|
|
t(async ({ eq, wait }) => |
|
// it should fail if the first promise reject |
|
eq( |
|
await race([wait(5), Promise.reject(Error('oops'))]).catch( |
|
(err) => err.message |
|
), |
|
'oops' |
|
) |
|
) |
|
|
|
t(async ({ eq, wait, ctx }) => |
|
// it should not fail if the first promise did not reject |
|
eq( |
|
await race([ |
|
wait(5).then(() => Promise.reject(Error('oops'))), |
|
Promise.resolve(ctx), |
|
]).catch((err) => err.message), |
|
ctx |
|
) |
|
) |
|
|
|
//// SOME |
|
t(async ({ eq }) => |
|
// empty array returns an empty array |
|
eq(await some([], 10), []) |
|
) |
|
|
|
t(async ({ eq }) => |
|
// a count of less than 1 also returns an empty array |
|
eq(await some([1, 2, 3], 0), []) |
|
) |
|
|
|
t(async ({ eq, wait }) => |
|
// it should return the first value to resolve |
|
eq(await some([Promise.resolve(2), wait(5).then(() => 5)], 1), [2]) |
|
) |
|
|
|
t(async ({ eq, wait }) => { |
|
// it should not wait for every results to wait, the order should be preserved. |
|
const start = Date.now() |
|
const result = await some([wait(1), wait(50), Promise.resolve(5)], 2) |
|
if (Date.now() - start > 5) throw Error("that's too long !") |
|
return eq(result, [undefined, 5]) |
|
}) |
|
|
|
Object.freeze(tests) |
|
|
|
export const setup = Math.random
|
|
|