@Test @ClientCompatibleTest public void compareAndSet() { HazelcastInstance hazelcastInstance = createHazelcastInstance(); IAtomicReference<String> ref = hazelcastInstance.getAtomicReference("compareAndSet"); assertTrue(ref.compareAndSet(null, null)); assertNull(ref.get()); assertFalse(ref.compareAndSet("foo", "bar")); assertNull(ref.get()); assertTrue(ref.compareAndSet(null, "foo")); assertEquals("foo", ref.get()); ref.set("foo"); assertTrue(ref.compareAndSet("foo", "foo")); assertEquals("foo", ref.get()); assertTrue(ref.compareAndSet("foo", "bar")); assertEquals("bar", ref.get()); assertTrue(ref.compareAndSet("bar", null)); assertNull(ref.get()); }