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44 lines
1.4 KiB
TypeScript
44 lines
1.4 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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import { assert } from "@std/assert";
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import { isLeap, isUtcLeap } from "./is_leap.ts";
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Deno.test({
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name: "isLeap()",
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fn() {
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assert(isLeap(1992));
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assert(isLeap(2000));
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assert(!isLeap(2003));
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assert(!isLeap(2007));
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assert(!isLeap(new Date("1970-01-02")));
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assert(isLeap(new Date("1972-01-02")));
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assert(isLeap(new Date("2000-01-02")));
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assert(!isLeap(new Date("2100-01-02")));
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},
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});
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Deno.test({
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name: "isUtcLeap()",
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fn() {
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assert(isUtcLeap(1992));
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assert(isUtcLeap(2000));
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assert(!isUtcLeap(2003));
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assert(!isUtcLeap(2007));
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// Date assumes the string given is UTC by default
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assert(!isLeap(new Date("1970-01-01")));
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assert(isUtcLeap(new Date("1972-01-01")));
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assert(isUtcLeap(new Date("2000-01-01")));
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assert(!isUtcLeap(new Date("2100-01-01")));
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// Bookends of a leap year
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assert(isUtcLeap(new Date("January 1, 2000 00:00:00 GMT+00:00")));
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assert(isUtcLeap(new Date("December 31, 2000 23:59:59 GMT+00:00")));
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// Edge cases of a UTC leap year from different time zones
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assert(!isUtcLeap(new Date("January 1, 2000 00:00:00 GMT+01:00")));
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assert(!isUtcLeap(new Date("December 31, 2000 23:59:59 GMT-01:00")));
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assert(isUtcLeap(new Date("January 1, 2001 00:00:00 GMT+01:00")));
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assert(isUtcLeap(new Date("December 31, 1999 23:59:59 GMT-01:00")));
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},
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});
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