Files
2026-07-13 13:32:57 +08:00

31 lines
1.0 KiB
TypeScript

import { describe, expect, it } from "vitest";
import { isValidTimeZone } from "~/utils/timezones.server";
describe("isValidTimeZone", () => {
// These are all zones a browser can report via
// Intl.DateTimeFormat().resolvedOptions().timeZone, but which are NOT in
// Intl.supportedValuesOf("timeZone"). Rejecting them left the user's stored
// timezone stale (their preference update would 400).
it.each(["UTC", "Etc/UTC", "GMT", "Asia/Kolkata"])(
"accepts %s even though it is not in supportedValuesOf",
(tz) => {
expect(Intl.supportedValuesOf("timeZone").includes(tz)).toBe(false);
expect(isValidTimeZone(tz)).toBe(true);
}
);
it.each(["Europe/London", "Europe/Moscow", "America/New_York", "Asia/Calcutta"])(
"accepts canonical zone %s",
(tz) => {
expect(isValidTimeZone(tz)).toBe(true);
}
);
it.each(["", "Not/AZone", "Mars/Phobos", "Europe/Nowhere", "12345"])(
"rejects invalid zone %s",
(tz) => {
expect(isValidTimeZone(tz)).toBe(false);
}
);
});