@Test public void shouldWorkWithNegativeIntegersAsInput() {

  int[] inputArray = { 5, 2, -17, 6, 1, 9 };
  int inputValue = -8;
  List<Pair<Integer, Integer>> result = findSums.find(inputArray, inputValue);
  assertTrue(result.contains(new Pair<Integer, Integer>(-17, 9)));
}