@Test
public void testIsFalse() {

    Assert.assertTrue(CommonUtils.isFalse("false"));
    Assert.assertTrue(CommonUtils.isFalse("False"));
    Assert.assertFalse(CommonUtils.isFalse("null"));
    Assert.assertFalse(CommonUtils.isFalse(""));
    Assert.assertFalse(CommonUtils.isFalse("xxx"));
    Assert.assertFalse(CommonUtils.isFalse((Boolean) null));
    Assert.assertFalse(CommonUtils.isFalse(Boolean.TRUE));
    Assert.assertTrue(CommonUtils.isFalse(Boolean.FALSE));
}