import { DateFormatter } from "./DateFormatter";

const DATEIN1 = "2019-09-07T-15:50+00";
const DATEIN2 = "2019-09-07T15:50.123+00Z";
const DATEIN3 = "2019-09-07T15:50.000-04:00";

const DATE1 = new Date(Date.UTC(2019, 8, 7, 15, 50, 0, 0));
const DATE2 = new Date(Date.UTC(2019, 8, 7, 15, 50, 0, 123));
const DATE3 = new Date(Date.UTC(2019, 8, 7, 19, 50, 0, 0));

const DATEOUT1 = "2019-09-07T15:50:00.000Z";
const DATEOUT2 = "2019-09-07T15:50:00.123Z";
const DATEOUT3 = "2019-09-07T19:50:00.000Z";

describe("DateFormatter", () => {
  it("decodes timestamps", () => {
    expect(new DateFormatter().decodeIso8601(DATEIN1)).toEqual(DATE1);
    expect(new DateFormatter().decodeIso8601(DATEIN2)).toEqual(DATE2);
    expect(new DateFormatter().decodeIso8601(DATEIN3)).toEqual(DATE3);
  });

  it("encodes timestamps", () => {
    expect(new DateFormatter().encodeIso8601(DATE1)).toEqual(DATEOUT1);
    expect(new DateFormatter().encodeIso8601(DATE2)).toEqual(DATEOUT2);
    expect(new DateFormatter().encodeIso8601(DATE3)).toEqual(DATEOUT3);
  });

  it("round trips timestamps", () => {
    const date1 = new DateFormatter().decodeIso8601(DATEOUT1);
    const date2 = new DateFormatter().decodeIso8601(DATEOUT2);
    const date3 = new DateFormatter().decodeIso8601(DATEOUT3);
    expect(new DateFormatter().encodeIso8601(date1)).toEqual(DATEOUT1);
    expect(new DateFormatter().encodeIso8601(date2)).toEqual(DATEOUT2);
    expect(new DateFormatter().encodeIso8601(date3)).toEqual(DATEOUT3);
  });
});