InterfaceComparableLab/src/test/java/com/zipcoder/payment/PaymentPresenterTest.java

package com.zipcoder.payment;

import org.junit.jupiter.api.Test;

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

public class PaymentPresenterTest {
    @Test
    public void TestingtoString(){

        Payment[] payments = new Payment[0];
        PaymentPresenter presenter = new PaymentPresenter();
        String expected = "";

        String actual = presenter.toString(payments);

        assertEquals(expected, actual);

    }

    @Test
    public void multiplepayments() {
        Payment[] payments = new Payment[2];
        Payment paypal = new PayPal(4L, "Tia Mowry", "tia@mowry.com");
        Payment check = new Check(81L, "Tia Mowry", "11432543", "134344551");

        payment[0] = paypal;
        payment[1] = check;

        PaymentPresenter presenter = new PaymentPresenter();
        String expected = "Check Tia Mowry ***4551\nPaypal Tia Mowry tia@mowry.com\n";

        String actual = presenter.toString(payments);
        assertEquals(expected, actual);
    }
}