@Test public void testStackpopCorrect() { Stack Stack = new Stack(); models.Cards card = new models.Cards(0, "2", "Hearts"); models.Cards card1 = new models.Cards(0, "1", "Hearts"); Stack.stack[0][0] = card; Stack.stack[1][0] = card1; System.out.print(Stack.stack[0][0].getRank() + " " + Stack.stack[0][0].getSuit() + "\n"); System.out.print(Stack.stack[1][0].getRank() + " " + Stack.stack[1][0].getSuit() + "\n"); Stack.popCard(0); System.out.print(Stack.stack[0][0].getRank() + " " + Stack.stack[0][0].getSuit() + "\n"); System.out.print(Stack.stack[1][0].getRank() + " " + Stack.stack[1][0].getSuit() + "\n"); }