ZCW-MesoLabs-Inheritance-ProductManager-BlueJ/InventoryTest.java

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

/**
 * The test class InventoryTest.
 *
 * @author  (your name)
 * @version (a version number or a date)
 */
public class InventoryTest
{
    
    @Test
    public void testAdd(){
        //Given
        Inventory inventory = new Inventory();
        Product product = new Product(1, "Herbal Tea", 1.60, 1);
        
        //When
        inventory.add(product);
        
        //Then
        int actualSize = inventory.size();
        int expectedSize = 1;
        
        assertEquals(expectedSize, actualSize);
    }
    
    @Test
    public void testGetProductByID() {
        Inventory inventory = new Inventory();
        int productID = 85;
        Product expectedProduct = new Product(productID, "Coffee", 4.60, 1);
        
        inventory.add(expectedProduct);
        
        Product actualProduct = inventory.getProductByID(productID);
        
        assertEquals(expectedProduct, actualProduct);
    }
    
    @Test
    public void testSumQuantity(){
        Inventory myInventory = new Inventory();
        
        Product product = new Product(86, "Herbal Tea", 1.6, 2);
        Product product2 = new Product(87, "Black Tea", 2.0, 2);
        Product product3 = new Product(88, "Green Tea", 3.5, 6);
        
        myInventory.add(product);
        myInventory.add(product2);
        myInventory.add(product3);
        
        int expectedQuantity = 10;
        int actualQuantity = myInventory.getSumQuantity();
        
        assertEquals(expectedQuantity, actualQuantity);
        
        
    }
}