wp-calypso/client/lib/cart-values/test/index.js

import assert from 'assert';
import * as cartItems from '../cart-items';

describe( 'index', () => {
	const TEST_BLOG_ID = 1;
	let DOMAIN_REGISTRATION_PRODUCT;
	let PREMIUM_PRODUCT;

	beforeAll( () => {
		DOMAIN_REGISTRATION_PRODUCT = cartItems.domainRegistration( {
			productSlug: 'dotcom_domain',
			domain: 'testdomain.com',
		} );
		PREMIUM_PRODUCT = cartItems.planItem( 'value_bundle' );
	} );

	describe( 'cartItems.hasProduct( cart, productSlug )', () => {
		test( 'should return a boolean that says whether the product is in the cart items', () => {
			const cartWithPremium = {
				blog_id: TEST_BLOG_ID,
				products: [ PREMIUM_PRODUCT ],
			};
			assert( cartItems.hasProduct( cartWithPremium, 'value_bundle' ) );

			const cartWithoutPremium = {
				blog_id: TEST_BLOG_ID,
				products: [ DOMAIN_REGISTRATION_PRODUCT ],
			};
			expect( cartItems.hasProduct( cartWithoutPremium, PREMIUM_PRODUCT ) ).toBe( false );
		} );
	} );
} );