misskey/packages/backend/test/prelude/maybe.ts
2024-02-13 15:59:27 +00:00

24 lines
532 B
TypeScript

/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import * as assert from 'assert';
import { just, nothing } from '../../src/misc/prelude/maybe.js';
describe('just', () => {
test('has a value', () => {
assert.deepStrictEqual(just(3).isJust(), true);
});
test('has the inverse called get', () => {
assert.deepStrictEqual(just(3).get(), 3);
});
});
describe('nothing', () => {
test('has no value', () => {
assert.deepStrictEqual(nothing().isJust(), false);
});
});