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18 lines
417 B
TypeScript
18 lines
417 B
TypeScript
import * as assert from 'assert';
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import { just, nothing } from '../../src/prelude/maybe.js';
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describe('just', () => {
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it('has a value', () => {
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assert.deepStrictEqual(just(3).isJust(), true);
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});
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it('has the inverse called get', () => {
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assert.deepStrictEqual(just(3).get(), 3);
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});
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});
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describe('nothing', () => {
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it('has no value', () => {
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assert.deepStrictEqual(nothing().isJust(), false);
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});
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});
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