@Test
public void whenReadLockAcquiredByOther_thenIncrementSucceedsButCommitFails() {
long initialValue = 10;
GammaTxnLong ref = new GammaTxnLong(stm, initialValue);
long initialVersion = ref.getVersion();
GammaTxn otherTx = transactionFactory.newTxn();
ref.getLock().acquire(otherTx, LockMode.Read);
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
ref.increment(5);
try {
tx.commit();
fail();
} catch (ReadWriteConflict expected) {
}
assertIsAborted(tx);
assertVersionAndValue(ref, initialVersion, initialValue);
assertRefHasReadLock(ref, otherTx);
assertReadLockCount(ref, 1);
}
@Test
public void whenNoTransaction_thenTxnMandatoryException() {
long initialValue = 10;
GammaTxnLong ref = new GammaTxnLong(stm, initialValue);
long initialVersion = ref.getVersion();
try {
ref.increment(5);
fail();
} catch (TxnMandatoryException expected) {
}
assertVersionAndValue(ref, initialVersion, initialValue);
}
@Test
public void whenSuccess() {
long initialValue = 10;
GammaTxnLong ref = new GammaTxnLong(stm, initialValue);
long initialVersion = ref.getVersion();
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
ref.increment(5);
tx.commit();
assertIsCommitted(tx);
assertVersionAndValue(ref, initialVersion + 1, initialValue + 5);
}
@Test
public void whenPreparedTransactionFound_thenPreparedTxnException() {
long initialValue = 10;
GammaTxnLong ref = new GammaTxnLong(stm, initialValue);
long initialVersion = ref.getVersion();
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
tx.prepare();
try {
ref.increment(5);
fail();
} catch (PreparedTxnException expected) {
}
assertIsAborted(tx);
assertVersionAndValue(ref, initialVersion, initialValue);
}
@Test
public void whenListenersAvailable() {
long initialValue = 10;
GammaTxnLong ref = new GammaTxnLong(stm, initialValue);
long initialVersion = ref.getVersion();
long amount = 4;
TxnLongAwaitThread thread = new TxnLongAwaitThread(ref, initialValue + amount);
thread.start();
sleepMs(500);
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
ref.increment(amount);
tx.commit();
joinAll(thread);
assertVersionAndValue(ref, initialVersion + 1, initialValue + amount);
}
@Test
public void whenReadonlyTransaction_thenReadonlyException() {
long initialValue = 10;
GammaTxnLong ref = new GammaTxnLong(stm, initialValue);
long initialVersion = ref.getVersion();
GammaTxn tx =
stm.newTxnFactoryBuilder()
.setReadonly(true)
.setSpeculative(false)
.newTransactionFactory()
.newTxn();
setThreadLocalTxn(tx);
try {
ref.increment(5);
fail();
} catch (ReadonlyException expected) {
}
assertIsAborted(tx);
assertVersionAndValue(ref, initialVersion, initialValue);
}