/// <reference types="bun-types" />

import { describe, expect, test } from "bun:test";
import { parseDuration, toDurationStr } from "./timers";

const Nanosecond = 1n;
const Microsecond = 1000n * Nanosecond;
const Millisecond = 1000n * Microsecond;
const Second = 1000n * Millisecond;
const Minute = 60n * Second;
const Hour = 60n * Minute;

describe("timers", () => {
  test.each([
    ["0s", 0n],
    ["1ns", 1n * Nanosecond],
    ["1.1µs", 1100n * Nanosecond],
    ["2.2ms", 2200n * Microsecond],
    ["3.3s", 3300n * Millisecond],
    ["4m5s", 4n * Minute + 5n * Second],
    ["4m5.001s", 4n * Minute + 5001n * Millisecond],
    ["5h6m7.001s", 5n * Hour + 6n * Minute + 7001n * Millisecond],
    ["8m0.000000001s", 8n * Minute + 1n * Nanosecond],
    ["9241h32m0.000000001s", 9241n * Hour + 32n * Minute + 1n * Nanosecond],
    ["-9241h32m0.000000001s", -(9241n * Hour + 32n * Minute + 1n * Nanosecond)],
  ])("toDurationStr: %s", (expected: string, input: bigint) => {
    const seconds = Number(input / Second);
    const nanoseconds = Number(input % Second);

    const asStr = toDurationStr([seconds, Math.abs(nanoseconds)]);
    expect(asStr).toEqual(expected);

    expect(parseDuration(asStr)).toEqual([seconds, nanoseconds]);
  });
});