lodash/test/isObject.spec.ts

import assert from 'node:assert';
import lodashStable from 'lodash';
import { args, slice, document, body, symbol, falsey, stubFalse, realm } from './utils';
import isObject from '../src/isObject';

describe('isObject', () => {
    it('should return `true` for objects', () => {
        assert.strictEqual(isObject(args), true);
        assert.strictEqual(isObject([1, 2, 3]), true);
        assert.strictEqual(isObject(Object(false)), true);
        assert.strictEqual(isObject(new Date()), true);
        assert.strictEqual(isObject(new Error()), true);
        assert.strictEqual(isObject(slice), true);
        assert.strictEqual(isObject({ a: 1 }), true);
        assert.strictEqual(isObject(Object(0)), true);
        assert.strictEqual(isObject(/x/), true);
        assert.strictEqual(isObject(Object('a')), true);

        if (document) {
            assert.strictEqual(isObject(body), true);
        }
        if (Symbol) {
            assert.strictEqual(isObject(Object(symbol)), true);
        }
    });

    it('should return `false` for non-objects', () => {
        const values = falsey.concat(true, 1, 'a', symbol),
            expected = lodashStable.map(values, stubFalse);

        const actual = lodashStable.map(values, (value, index) =>
            index ? isObject(value) : isObject(),
        );

        assert.deepStrictEqual(actual, expected);
    });

    it('should work with objects from another realm', () => {
        if (realm.element) {
            assert.strictEqual(isObject(realm.element), true);
        }
        if (realm.object) {
            assert.strictEqual(isObject(realm.boolean), true);
            assert.strictEqual(isObject(realm.date), true);
            assert.strictEqual(isObject(realm.function), true);
            assert.strictEqual(isObject(realm.number), true);
            assert.strictEqual(isObject(realm.object), true);
            assert.strictEqual(isObject(realm.regexp), true);
            assert.strictEqual(isObject(realm.string), true);
        }
    });
});