}
@Test
public void testDoWorkOnPurgeExpired() throws Exception {
CacheStore cs = createMock(CacheStore.class);
PurgeExpired purge = createMock(PurgeExpired.class);
expect(purge.getType()).andReturn(Modification.Type.PURGE_EXPIRED);
cs.purgeExpired();
replay(cs);
replay(purge);
ModificationsTransactionWorker worker =