Matt Aitken
d2dde0a844
* Fix for the DateTime ISO function * Fix implementation and added unit tests * Preserve milliseconds properly
55 lines
2.2 KiB
TypeScript
55 lines
2.2 KiB
TypeScript
import { describe, it, expect } from "vitest";
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import { formatDateTimeISO } from "~/components/primitives/DateTime";
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describe("formatDateTimeISO", () => {
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it("should format UTC dates with Z suffix", () => {
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const date = new Date("2025-04-29T14:01:19.000Z");
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const result = formatDateTimeISO(date, "UTC");
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expect(result).toBe("2025-04-29T14:01:19.000Z");
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});
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describe("British Time (Europe/London)", () => {
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it("should format with +01:00 during BST (summer)", () => {
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// BST - British Summer Time (last Sunday in March to last Sunday in October)
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const summerDate = new Date("2025-07-15T14:01:19.000Z");
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const result = formatDateTimeISO(summerDate, "Europe/London");
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expect(result).toBe("2025-07-15T15:01:19.000+01:00");
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});
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it("should format with +00:00 during GMT (winter)", () => {
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// GMT - Greenwich Mean Time (winter)
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const winterDate = new Date("2025-01-15T14:01:19.000Z");
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const result = formatDateTimeISO(winterDate, "Europe/London");
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expect(result).toBe("2025-01-15T14:01:19.000+00:00");
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});
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});
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describe("US Pacific Time (America/Los_Angeles)", () => {
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it("should format with -07:00 during PDT (summer)", () => {
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// PDT - Pacific Daylight Time (second Sunday in March to first Sunday in November)
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const summerDate = new Date("2025-07-15T14:01:19.000Z");
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const result = formatDateTimeISO(summerDate, "America/Los_Angeles");
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expect(result).toBe("2025-07-15T07:01:19.000-07:00");
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});
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it("should format with -08:00 during PST (winter)", () => {
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// PST - Pacific Standard Time (winter)
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const winterDate = new Date("2025-01-15T14:01:19.000Z");
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const result = formatDateTimeISO(winterDate, "America/Los_Angeles");
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expect(result).toBe("2025-01-15T06:01:19.000-08:00");
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});
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});
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it("should preserve milliseconds", () => {
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const date = new Date("2025-04-29T14:01:19.123Z");
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const result = formatDateTimeISO(date, "UTC");
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expect(result).toBe("2025-04-29T14:01:19.123Z");
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});
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it("should preserve milliseconds, not UTC", () => {
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const date = new Date("2025-04-29T14:01:19.123Z");
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const result = formatDateTimeISO(date, "Europe/London");
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expect(result).toBe("2025-04-29T15:01:19.123+01:00");
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});
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});
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