import { describe, expect, it } from "vitest";
import { toCalendarDay } from "./dates";

describe("toCalendarDay", () => {
  it("cuts the day off an ISO timestamp without shifting it", () => {
    expect(toCalendarDay("2026-10-01T23:30:00.000Z")).toBe("2026-10-01");
    expect(toCalendarDay("2026-10-01")).toBe("2026-10-01");
  });
});