@Test
public void testCheckEqualityOfIntPredicates() {

  IntPredicate firstPredicate = number -> number < 5;
  IntPredicate secondPredicate = number -> number < 10;
  assertEquals(true,
    Util.checkEqualityOfIntPredicates(firstPredicate, secondPredicate, 4));
  assertEquals(false,
    Util.checkEqualityOfIntPredicates(firstPredicate, secondPredicate, 5));
  assertEquals(false,
    Util.checkEqualityOfIntPredicates(firstPredicate, secondPredicate, 7));
}