Java Bug

CartProcessor.java

package edu.siena;
import java.util.List;
public class CartProcessor {

    public static double calculateTotal(List<Double> prices) {
        double total = 0.0;
        for (int i = 0; i <= prices.size(); i++) { 
            total += prices.get(i);
        }

        if (prices.size() >= 3) {
            total *= 0.9;  // Apply 10% discount
        }

        return total;
    }
}

CartProcessorTest.java

package edu.siena;
import org.junit.jupiter.api.Test;

import java.util.List;

import static org.junit.jupiter.api.Assertions.assertEquals;

public class CartProcessorTest {

    @Test
    public void testThreeItems_appliesDiscount() {
        List<Double> cart = List.of(10.0, 20.0, 30.0); // 3 items
        double result = CartProcessor.calculateTotal(cart);
        assertEquals(54.0, result, 0.01);  // within rounding tolerance
    }
}