@Test
void testEqualsIgnoreCase() {

    Assertions.assertTrue(StringUtils.equalsIgnoreCase("a", "a"));
    Assertions.assertTrue(StringUtils.equalsIgnoreCase("a", "A"));
    Assertions.assertTrue(StringUtils.equalsIgnoreCase("A", "a"));
    Assertions.assertFalse(StringUtils.equalsIgnoreCase("1", "2"));
    Assertions.assertFalse(StringUtils.equalsIgnoreCase(null, "1"));
    Assertions.assertFalse(StringUtils.equalsIgnoreCase("1", null));
    Assertions.assertFalse(StringUtils.equalsIgnoreCase("", null));
    Assertions.assertFalse(StringUtils.equalsIgnoreCase(null, ""));
}