/** Moo */
@Test
public void testContainsTrue() {
words.add("100");
assertTrue(words.contains("100"));
words.add("500");
assertTrue(words.contains("500"));
}
/** Moo */
@Test
public void testContainsFalse() {
assertFalse(words.contains("0"));
words.add("100");
assertFalse(words.contains("0"));
words.add("200");
assertFalse(words.contains("500"));
}
public void add(Rental rental) {
if (rental == null) return;
if (list.contains(rental)) return;
list.add(rental);
}