код написан на java Ваша задача - добавить два новых метода в класс Shop: Метод sortProductsByPrice(), который сортирует список продуктов по стоимости. Метод getMostExpensiveProduct(), который возвращает самый дорогой продукт. Напишите тесты, чтобы проверить, что магазин хранит верный список продуктов (правильное количество продуктов, верное содержимое корзины).

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Shop {
    private List<Product> products;

    public Shop() {
        this.products = new ArrayList<>();
    }

    public void addProduct(Product product) {
        products.add(product);
    }

    public void removeProduct(Product product) {
        products.remove(product);
    }

    public List<Product> getProducts() {
        return products;
    }

    public void sortProductsByPrice() {
        Collections.sort(products, (p1, p2) -> Double.compare(p1.getPrice(), p2.getPrice()));
    }

    public Product getMostExpensiveProduct() {
        if (products.isEmpty()) {
            return null;
        }
        return Collections.max(products, (p1, p2) -> Double.compare(p1.getPrice(), p2.getPrice()));
    }
}

import org.junit.Test;
import static org.junit.Assert.*;

public class ShopTest {
    
    @Test
    public void testAddProduct() {
        Shop shop = new Shop();
        Product product = new Product("Apple", 1.0);
        shop.addProduct(product);
        assertEquals(1, shop.getProducts().size());
        assertTrue(shop.getProducts().contains(product));
    }
    
    @Test
    public void testRemoveProduct() {
        Shop shop = new Shop();
        Product product = new Product("Banana", 0.5);
        shop.addProduct(product);
        shop.removeProduct(product);
        assertEquals(0, shop.getProducts().size());
        assertFalse(shop.getProducts().contains(product));
    }
    
    @Test
    public void testSortProductsByPrice() {
        Shop shop = new Shop();
        Product product1 = new Product("Orange", 2.0);
        Product product2 = new Product("Grapes", 1.5);
        Product product3 = new Product("Watermelon", 3.0);
        shop.addProduct(product1);
        shop.addProduct(product2);
        shop.addProduct(product3);
        shop.sortProductsByPrice();
        assertEquals(product2, shop.getProducts().get(0));
        assertEquals(product1, shop.getProducts().get(1));
        assertEquals(product3, shop.getProducts().get(2));
    }
    
    @Test
    public void testGetMostExpensiveProduct() {
        Shop shop = new Shop();
        Product product1 = new Product("Mango", 2.5);
        Product product2 = new Product("Pineapple", 3.5);
        Product product3 = new Product("Kiwi", 1.8);
        shop.addProduct(product1);
        shop.addProduct(product2);
        shop.addProduct(product3);
        assertEquals(product2, shop.getMostExpensiveProduct());
    }
}