import { describe, expect, test } from "bun:test";
import { comparePartialDates, parsePartialDate } from "../src/partial-date.ts";

describe("parsePartialDate", () => {
  const table: [string | null | undefined, { value: string; precision: string } | null][] = [
    ["2019", { value: "2019", precision: "year" }],
    ["2019-03", { value: "2019-03", precision: "month" }],
    ["2019-03-04", { value: "2019-03-04", precision: "day" }],
    ["2019-03-04T10:20:30Z", { value: "2019-03-04T10:20:30Z", precision: "day" }],
    ["2019-03-04T10:20:30.123+02:00", { value: "2019-03-04T10:20:30.123+02:00", precision: "day" }],
    ["03/04/2019", null],
    ["", null],
    [null, null],
    [undefined, null],
    ["2019-13", null],
    ["2019-02-30", null],
    ["garbage", null],
  ];
  for (const [input, expected] of table) {
    test(`${JSON.stringify(input)}`, () => {
      expect(parsePartialDate(input)).toEqual(expected as never);
    });
  }
});

describe("comparePartialDates", () => {
  test("orders by value", () => {
    const y = { value: "2019", precision: "year" as const };
    const m = { value: "2019-03", precision: "month" as const };
    const d = { value: "2019-03-04", precision: "day" as const };
    expect(comparePartialDates(y, m)).toBeLessThan(0);
    expect(comparePartialDates(d, m)).toBeGreaterThan(0);
    expect(comparePartialDates(d, d)).toBe(0);
  });
});