@Test
public void manyNumbersAcrossTwentiesAndThirties() throws Exception {
Collection<Integer> missingNumbers = finder.missingNumbers(Arrays.asList(27, 29, 34));
assertEquals(missingNumbers, Arrays.asList(28, 30, 31, 32, 33));
}
@Test
public void numbersLargerThanThreshold() throws Exception {
Collection<Integer> missingNumbers = finder.missingNumbers(Arrays.asList(27, 34));
assertEquals(missingNumbers, Arrays.asList(28, 29, 30, 31, 32, 33));
}
@Test
public void manyNumbersMissingInASequence() throws Exception {
Collection<Integer> missingNumbers = finder.missingNumbers(Arrays.asList(12, 13, 17));
assertEquals(missingNumbers, Arrays.asList(14, 15, 16));
}