import { describe, expect, it } from "vitest";
import {
  formatEndTime,
  formatStartTime,
  weekdaysLabel,
} from "@/lib/format/schedule";

/**
 * 指示書M 4-4 / 4-5 の期待値表テスト。
 */
describe("weekdaysLabel", () => {
  const cases: [string, string][] = [
    ["1111111", "毎日"],
    ["0111110", "平日のみ"],
    ["1000001", "土日のみ"],
    ["0101010", "月水金"],
    ["1010101", "日火木土"],
    ["0000000", "なし"],
    ["1000000", "日"],
    ["111", "日月火"],
  ];

  it.each(cases)("%s → %s", (weeks, label) => {
    expect(weekdaysLabel(weeks)).toBe(label);
  });
});

describe("formatStartTime", () => {
  it("0000〜2359 は HH:MM のまま", () => {
    expect(formatStartTime("0200")).toBe("02:00");
    expect(formatStartTime("2359")).toBe("23:59");
  });

  it("範囲外の時は例外を投げる", () => {
    expect(() => formatStartTime("2400")).toThrow(RangeError);
  });
});

describe("formatEndTime（D-060。24〜29時は翌日扱い）", () => {
  const cases: [string, string][] = [
    ["0200", "02:00"],
    ["0300", "03:00"],
    ["2359", "23:59"],
    ["2430", "翌00:30"],
    ["2830", "翌04:30"],
    ["2900", "翌05:00"],
  ];

  it.each(cases)("%s → %s", (hhmm, expected) => {
    expect(formatEndTime(hhmm)).toBe(expected);
  });

  it("30〜99時（範囲外）は例外を投げる", () => {
    expect(() => formatEndTime("3000")).toThrow(RangeError);
  });
});