67 lines
2 KiB
TypeScript
67 lines
2 KiB
TypeScript
import { afterEach, describe, expect, mock, spyOn, test } from "bun:test";
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import {
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formatDate,
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formatDateTime,
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formatDateWithMonth,
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formatShortDate,
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formatShortDateTime,
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formatTime,
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formatTimeAgo,
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} from "../datetime";
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afterEach(() => {
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mock.restore();
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});
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const sampleDate = new Date("2026-01-10T14:30:00.000Z");
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describe("datetime formatters", () => {
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test.each([
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formatDateTime,
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formatDateWithMonth,
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formatDate,
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formatShortDate,
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formatShortDateTime,
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formatTime,
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formatTimeAgo,
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])("returns Never when no date is provided", (formatValue) => {
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expect(formatValue(null)).toBe("Never");
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});
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test.each([
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formatDateTime,
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formatDateWithMonth,
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formatDate,
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formatShortDate,
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formatShortDateTime,
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formatTime,
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formatTimeAgo,
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])("returns Invalid Date when the input cannot be parsed", (formatValue) => {
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expect(formatValue("not-a-date")).toBe("Invalid Date");
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});
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test("accepts Date, string, and timestamp inputs for calendar formatters", () => {
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const isoDate = sampleDate.toISOString();
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const timestamp = sampleDate.getTime();
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expect(formatDateTime(isoDate)).toBe(formatDateTime(sampleDate));
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expect(formatDateTime(timestamp)).toBe(formatDateTime(sampleDate));
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expect(formatDateWithMonth(isoDate)).toBe(formatDateWithMonth(sampleDate));
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expect(formatDate(timestamp)).toBe(formatDate(sampleDate));
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expect(formatShortDate(isoDate)).toBe(formatShortDate(sampleDate));
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expect(formatShortDateTime(timestamp)).toBe(formatShortDateTime(sampleDate));
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expect(formatTime(isoDate)).toBe(formatTime(sampleDate));
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});
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test("formats relative times without approximation prefixes", () => {
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const nowSpy = spyOn(Date, "now").mockReturnValue(new Date("2026-01-10T14:35:00.000Z").getTime());
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expect(formatTimeAgo(sampleDate)).toBe("5 minutes ago");
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nowSpy.mockRestore();
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});
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test("formats calendar values with an explicit locale and timezone", () => {
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expect(formatShortDateTime(sampleDate, { locale: "en-US", timeZone: "UTC" })).toBe("1/10, 2:30 PM");
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});
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});
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