public void testOneCard() {
Billfold wallet = new Billfold(new Card());
assertEquals("[" + wallet.getCard1().format() + "|null]", wallet.formatCard());
}
public void testTwoCards() {
Billfold wallet = new Billfold(new Card(), new Card());
assertEquals(
"[" + wallet.getCard1().format() + "|" + wallet.getCard2().format() + "]",
wallet.formatCard());
}
public void testNullCards() {
Billfold wallet = new Billfold();
assertEquals("[null]", wallet.formatCard());
}
