@Test public void testHash() { MutableRoaringBitmap rbm1 = new MutableRoaringBitmap(); rbm1.add(17); MutableRoaringBitmap rbm2 = new MutableRoaringBitmap(); rbm2.add(17); Assert.assertTrue(rbm1.hashCode() == rbm2.hashCode()); rbm2 = rbm1.clone(); Assert.assertTrue(rbm1.hashCode() == rbm2.hashCode()); }