import { describe, expect, it } from "vitest";

import { normalizeTimestamp } from "./date-time.js";

import { afterEach, describe, expect, it, vi } from "vitest";

import { formatDateStamp, normalizeTimestamp } from "./date-time.js";

describe("normalizeTimestamp", () => {

it("normalizes numeric second and millisecond timestamps", () => {

expect(normalizeTimestamp("999999999999999999999999")).toBeUndefined();

});

});

describe("formatDateStamp", () => {

afterEach(() => {

vi.restoreAllMocks();

});

it("falls back when nowMs is outside Date range", () => {

vi.spyOn(Date, "now").mockReturnValue(Date.UTC(2026, 4, 30, 12, 0, 0));

expect(formatDateStamp(8_640_000_000_000_001, "UTC")).toBe("2026-05-30");

});

});