@Test
void testEquals() {

    Assertions.assertTrue(StringUtils.equals("1", "1"));
    Assertions.assertFalse(StringUtils.equals("1", "2"));
    Assertions.assertFalse(StringUtils.equals(null, "1"));
    Assertions.assertFalse(StringUtils.equals("1", null));
    Assertions.assertFalse(StringUtils.equals("", null));
    Assertions.assertFalse(StringUtils.equals(null, ""));
}