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export const tests = []
const t = (f) => tests.push(f)
const add = (arr, el) => arr.push(el)
// it uses the array to better test the leading and trailing edge of the time limit
// so if the leading edge is true it will execute the callback
// if the trailing edge is true it will execute the callback before returning the array
const run = (callback, { delay, count }) =>
new Promise((r) => {
const arr = []
const inter = setInterval(() => callback(arr, 1), delay)
setTimeout(() => {
clearInterval(inter)
r(arr.length)
}, delay * count)
})
// test with debounce wait limit inferior to wait time call (how much time we wait to the function be called again)
// it works concurrently
t(async ({ eq }) =>
eq(
await Promise.all([
run(debounce(add, 5), { delay: 10, count: 5 }),
run(debounce(add, 2), { delay: 5, count: 10 }),
]),
[4, 9],
),
)
// testing with wait limit superior to wait time call
// execution on the trailing edge, after wait limit has elapsed
t(async ({ eq }) => eq(await run(debounce(add, 10), { delay: 5, count: 5 }), 0))
// leading edge as false
// it works concurrently
t(async ({ eq }) =>
eq(
await Promise.all([
run(opDebounce(add, 4), { delay: 2, count: 5 }),
run(opDebounce(add, 4), { delay: 2, count: 2 }),
]),
[0, 0],
),
)
// leading edge as true
// it works concurrently
t(async ({ eq }) =>
eq(
await Promise.all([
run(opDebounce(add, 20, { leading: true }), { delay: 7, count: 3 }),
run(opDebounce(add, 10, { leading: true }), { delay: 14, count: 3 }),
]),
[1, 3],
),
)
Object.freeze(tests)