SWE1-MTCG/src/test/java/CoinsTest.java

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;
import static org.junit.jupiter.api.Assertions.assertFalse;

public class CoinsTest {

    @Test
    public void test_getCoinAmount(){
        Coins coin = new Coins(10);
        assertTrue(coin.getCoinAmount() >= 0);
    }

    @Test
    public void test_addCoinException(){
        try {
            Coins coin = new Coins(10);
            coin.addCoin(-10);
            fail("Erwartet NegativAmountException - addCoin");
        }catch (NegativAmountException negativAmountException) {
            assertTrue(negativAmountException.getMessage().equals("Es kann kein negativer amount an Coins hinzugefügt werden"));
        }
    }

    @Test
    public void test_removeCoinException(){
        try {
            Coins coin = new Coins(10);
            coin.removeCoin(-10);
            fail("Erwartet NegativAmountException - removeCoin");
        }catch (NegativAmountException negativAmountException) {
            assertTrue(negativAmountException.getMessage().equals("Es kann kein negativer amount an Coins hinzugefügt werden"));
        }
    }

    @Test
    public void test_removeCoin(){
            Coins coin = new Coins(10);
        try {
            assertTrue(coin.removeCoin(10));
        } catch (NegativAmountException e) {
            e.printStackTrace();
        }
    }

    @Test
    public void test_changeCoinAmount_true(){
        Coins coin = new Coins(10);
        try {
            assertTrue(coin.changeCoinAmmount(10));
        } catch (NegativAmountException e) {
            e.printStackTrace();
        }
    }

    @Test
    public void test_changeCoinAmount_false(){
        Coins coin = new Coins(9);
        try {
            assertTrue(coin.changeCoinAmmount(7));
        } catch (NegativAmountException e) {
            e.printStackTrace();
        }
    }
}