@Test
public void testBooleanHash() {

    final int h1 = LangUtils.hashCode(LangUtils.HASH_SEED, true);
    final int h2 = LangUtils.hashCode(LangUtils.HASH_SEED, false);
    final int h3 = LangUtils.hashCode(LangUtils.HASH_SEED, true);
    final int h4 = LangUtils.hashCode(LangUtils.HASH_SEED, false);
    Assert.assertTrue(h1 != h2);
    Assert.assertTrue(h1 == h3);
    Assert.assertTrue(h2 == h4);
}