/** 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"));
}