discountApplier_equalityTests.test.ts

    it('getDiscountPercentageValue returns 0 percent discount for total quantity of 10 and total price of 2', () => {
        let discountApplier = new DiscountApplier();
        let products = [new Product("Product 1", 1, 5), new Product("Product 2", 1, 5)];

        let discountValue = discountApplier.getDiscountPercentageValue(products);
        expect(discountValue).toBe(0);
    });

    it('getDiscountPercentageValue returns 0 percent discount for 2 products with total quantity of 2 and total price of 100', () => {
        let discountApplier = new DiscountApplier();
        let products = [new Product("Product 1", 50, 1), new Product("Product 2", 50, 1)];

        let discountValue = discountApplier.getDiscountPercentageValue(products);
        expect(discountValue).toBe(0);
    });

    it('getDiscountPercentageValue returns 5 percent discount for 2 products with total quantity of 2 and total price of 500', () => {
        let discountApplier = new DiscountApplier();
        let products = [new Product("Product 1", 250, 1), new Product("Product 2", 250, 1)];

        let discountValue = discountApplier.getDiscountPercentageValue(products);
        expect(discountValue).toBe(5);
    });

    it('getDiscountPercentageValue returns 10 percent discount for 2 products with total quantity of 2 and total price of 2000', () => {
        let discountApplier = new DiscountApplier();
        let products = [new Product("Product 1", 1000, 1), new Product("Product 2", 1000, 1)];

        let discountValue = discountApplier.getDiscountPercentageValue(products);
        expect(discountValue).toBe(10);
    });