import assert from 'node:assert'; import lodashStable from 'lodash'; import { empties, stubFalse } from './utils'; import includes from '../src/includes'; describe('includes', () => { (function () { lodashStable.each( { 'an `arguments` object': arguments, 'an array': [1, 2, 3, 4], 'an object': { a: 1, b: 2, c: 3, d: 4 }, 'a string': '1234', }, (collection, key) => { it(`should work with ${key} and return \`true\` for matched values`, () => { assert.strictEqual(includes(collection, 3), true); }); it(`should work with ${key} and return \`false\` for unmatched values`, () => { assert.strictEqual(includes(collection, 5), false); }); it(`should work with ${key} and floor \`position\` values`, () => { assert.strictEqual(includes(collection, 2, 1.2), true); }); it(`should work with ${key} and return an unwrapped value implicitly when chaining`, () => { assert.strictEqual(_(collection).includes(3), true); }); it(`should work with ${key} and return a wrapped value when explicitly chaining`, () => { assert.ok(_(collection).chain().includes(3) instanceof _); }); }, ); lodashStable.each( { literal: 'abc', object: Object('abc'), }, (collection, key) => { it(`should work with a string ${key} for \`collection\``, () => { assert.strictEqual(includes(collection, 'bc'), true); assert.strictEqual(includes(collection, 'd'), false); }); }, ); it('should return `false` for empty collections', () => { const expected = lodashStable.map(empties, stubFalse); const actual = lodashStable.map(empties, (value) => { try { return includes(value); } catch (e) {} }); assert.deepStrictEqual(actual, expected); }); it('should work with a string and a `fromIndex` >= `length`', () => { const string = '1234', length = string.length, indexes = [4, 6, 2 ** 32, Infinity]; const expected = lodashStable.map(indexes, (index) => [false, false, index === length]); const actual = lodashStable.map(indexes, (fromIndex) => [ includes(string, 1, fromIndex), includes(string, undefined, fromIndex), includes(string, '', fromIndex), ]); assert.deepStrictEqual(actual, expected); }); it('should match `NaN`', () => { assert.strictEqual(includes([1, NaN, 3], NaN), true); }); it('should match `-0` as `0`', () => { assert.strictEqual(includes([-0], 0), true); assert.strictEqual(includes([0], -0), true); }); it('should work as an iteratee for methods like `_.every`', () => { const array = [2, 3, 1], values = [1, 2, 3]; assert.ok(lodashStable.every(values, lodashStable.partial(includes, array))); }); })(1, 2, 3, 4); });