Test.java

package lab2;

/**
 * @author Art Freebrey
 * @version 1.0
<br></br>
 * - no copyright
<br></br>
 * - created 11.2.2025
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 * - last modified 11.2.2025
<br></br>
 * - purpose: runs various tests on vending machine instances
<br></br>
 * - version history: 1.0 added code;
 */
public class Test {
    public static void main(String[] args) {
        // default constructor (limit of 10)
        VendingMachine machine1 = new VendingMachine("Chips", 5, 9);
        
        // custom constructor within bounds
        VendingMachine machine2 = new VendingMachine("Drinks", 3, 7, 20);
        
        // custom constructor exceeding max allowed (should stop at 50)
        VendingMachine machine3 = new VendingMachine("Cookies", 1, 2, 60);
        
        // initial item count exceeding machine's limit
        VendingMachine machine4 = new VendingMachine("Candy", 2, 25, 15);

        VendingMachine[] vendingMachines = new VendingMachine[4];
        vendingMachines[0] = machine1;
        vendingMachines[1] = machine2;
        vendingMachines[2] = machine3;
        vendingMachines[3] = machine4;

        System.out.println("\n| serial | item type | price | quantity | limit |");

        for (VendingMachine vm : vendingMachines) {
            System.out.printf("| %6d | %9s | £%4.2f | %8d | %6d |\n",
                    vm.getSerialNumber(),
                    vm.getItemType(),
                    vm.getItemPrice(),
                    vm.getItemCount(),
                    vm.getItemQuantityLimit());
        }
        System.out.println();

        // try while powered off
        System.out.println("try add items while off:");
        machine1.addItems(5);
        System.out.println("try buy item while off:");
        machine1.buyItem();
        System.out.println();

        // power on and add items
        System.out.println("turning on machine");
        machine1.togglePower();
        System.out.println("add 5 items");
        machine1.addItems(5);
        System.out.println();

        // test capacity
        System.out.println("add 6 more items (should fail):");
        machine1.addItems(6);
        System.out.println("add -1 items (should fail):");
        machine1.addItems(-1);
        System.out.println();

        // buying items
        System.out.println("buy 3 items:");
        for (int i = 0; i < 4; i++) {
            machine1.buyItem();
        }
        System.out.println();
        machine2.togglePower();
        
        System.out.println("\nmachine 2 (custom limit 20):");
        System.out.println("adding 15 items (should fail):");
        machine2.addItems(15);
        System.out.println("add 10 items");
        machine2.addItems(10);
    }
}