(Medium) When Code Duplication In Tests Is Acceptable - Cart Test Example

Gist ~1 min read

20 Sep '26, 03:45current

This article is too short to summarise.

This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters

Show hidden characters

	module('Shirts cart');

	test('a valid product can be retrieved from the cart after being added', () => {
	const fakeShirt = Product()
	.asType('shirt') // Mandatory
	.withSize('XL') // Mandatory
	.withColor('black'); // Mandatory
	const cart = ShirtsCart();
	cart.addProduct(fakeShirt);
	expect(cart).toContain(fakeShirt);
	});

	test('when we try to add an invalid product to the cart then it\'s not added', () => {
	const fakePants = Product()
	.asType('pants') // Mandatory
	.withSize('XL') // Mandatory
	.withColor('black'); // Mandatory
	const cart = ShirtsCart();
	cart.addProduct(fakePants);
	expect(cart).not.toContain(fakePants);
	});