@Test
public void testIn() {

   Assert.assertEquals(false, ObjectFunction.in(null, null));
   Assert.assertEquals(false, ObjectFunction.in("abc", "ab"));
   Assert.assertEquals(true, ObjectFunction.in("abc", "abc"));
   Assert.assertEquals(true, ObjectFunction.in(Arrays.asList("a", "abc"), "abc"));
   Assert.assertEquals(true, ObjectFunction.in(new Object[] { "a", "abc" }, "abc"));
   Assert.assertEquals(false, ObjectFunction.in(new Object[] { "a", "abc" }, "abcd"));
   Assert.assertEquals(true, ObjectFunction.in(new Object[] { 1, "2", 3 }, "3"));
}