@jrc03c/js-math-tools/src/time.test.mjs

some math tools for JS

import { expect, test } from "@jrc03c/fake-jest"
import { pause, pauseSync } from "@jrc03c/pause"
import { time } from "./time.mjs"

test("tests that the `time` function works correctly", async () => {
  for (let i = 0; i < 10; i++) {
    const ms = Math.random() * 250

    // sync
    const t1 = time(() => pauseSync(ms))
    expect(Math.abs(t1 - ms)).toBeLessThan(10)

    // async
    const t2 = await time(async () => await pause(ms))
    expect(Math.abs(t2 - ms)).toBeLessThan(10)
  }
})