DummyTransactionManager mgr = DummyTransactionManager.getInstance();
Assert.assertNull(cache.get(fqn));
cache.put(fqn, key, value);
Assert.assertEquals(value, cache.get(fqn, key));
mgr.begin();
Assert.assertEquals(value, cache.get(fqn, key));
cache.remove(fqn);
Assert.assertNull(cache.get(fqn));
tx = mgr.getTransaction();
mgr.suspend();