import date_utils from "../src/date_utils";

test("Parse: parses string date", () => {
  const date = date_utils.parse("2017-09-09");

  expect(date.getDate()).toBe(9);
  expect(date.getMonth()).toBe(8);
  expect(date.getFullYear()).toBe(2017);
});

test("Parse: parses string datetime", () => {
  const date = date_utils.parse("2017-08-27 16:08:34");

  expect(date.getFullYear()).toBe(2017);
  expect(date.getMonth()).toBe(7);
  expect(date.getDate()).toBe(27);
  expect(date.getHours()).toBe(16);
  expect(date.getMinutes()).toBe(8);
  expect(date.getSeconds()).toBe(34);
});

test("Parse: parses string datetime", () => {
  const date = date_utils.parse("2016-02-29 16:08:34.3");

  expect(date.getFullYear()).toBe(2016);
  expect(date.getMonth()).toBe(1);
  expect(date.getDate()).toBe(29);
  expect(date.getHours()).toBe(16);
  expect(date.getMinutes()).toBe(8);
  expect(date.getSeconds()).toBe(34);
  expect(date.getMilliseconds()).toBe(300);
});

test("Parse: parses string datetime", () => {
  const date = date_utils.parse("2015-07-01 00:00:59.200");

  expect(date.getFullYear()).toBe(2015);
  expect(date.getMonth()).toBe(6);
  expect(date.getDate()).toBe(1);
  expect(date.getHours()).toBe(0);
  expect(date.getMinutes()).toBe(0);
  expect(date.getSeconds()).toBe(59);
  expect(date.getMilliseconds()).toBe(200);
});

test("Format: converts date object to string", () => {
  const date = new Date("2017-09-18");
  expect(date_utils.to_string(date)).toBe("2017-09-18");
});

test("Format: converts date object to string", () => {
  const date = new Date("2016-02-29 16:08:34.3");
  expect(date_utils.to_string(date, true)).toBe("2016-02-29 16:08:34.300");
});

test("Format: converts date object to string", () => {
  const date = new Date("2016-02-29 16:08:34.3");
  expect(date_utils.to_string(date, true)).toBe("2016-02-29 16:08:34.300");
});

test("Parse: returns Date Object as is", () => {
  const d = new Date();
  const date = date_utils.parse(d);

  expect(d).toBe(date);
});

test("Diff: returns diff between 2 date objects", () => {
  const a = date_utils.parse("2017-09-08");
  const b = date_utils.parse("2017-06-07");

  expect(date_utils.diff(a, b, "day")).toBe(93);
  expect(date_utils.diff(a, b, "month")).toBe(3);
  expect(date_utils.diff(a, b, "year")).toBe(0);
});

test("StartOf", () => {
  const date = date_utils.parse("2017-08-12 15:07:34.012");

  const start_of_millisecond = date_utils.start_of(date, "millisecond");
  expect(date_utils.to_string(start_of_millisecond, true)).toBe(
    "2017-08-12 15:07:34.012",
  );

  const start_of_second = date_utils.start_of(date, "second");
  expect(date_utils.to_string(start_of_second, true)).toBe(
    "2017-08-12 15:07:34.000",
  );

  const start_of_minute = date_utils.start_of(date, "minute");
  expect(date_utils.to_string(start_of_minute, true)).toBe(
    "2017-08-12 15:07:00.000",
  );

  const start_of_hour = date_utils.start_of(date, "hour");
  expect(date_utils.to_string(start_of_hour, true)).toBe(
    "2017-08-12 15:00:00.000",
  );

  const start_of_day = date_utils.start_of(date, "day");
  expect(date_utils.to_string(start_of_day, true)).toBe(
    "2017-08-12 00:00:00.000",
  );

  const start_of_month = date_utils.start_of(date, "month");
  expect(date_utils.to_string(start_of_month, true)).toBe(
    "2017-08-01 00:00:00.000",
  );

  const start_of_year = date_utils.start_of(date, "year");
  expect(date_utils.to_string(start_of_year, true)).toBe(
    "2017-01-01 00:00:00.000",
  );
});

test("format", () => {
  const date = date_utils.parse("2017-08-12 15:07:23");
  expect(date_utils.format(date, "YYYY-MM-DD")).toBe("2017-08-12");
});

test("format", () => {
  const date = date_utils.parse("2016-02-29 16:08:34.3");
  expect(date_utils.format(date)).toBe("2016-02-29 16:08:34.300");
});