package org.multiverse.stms.gamma.transactionalobjects.gammaref;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.mockito.Matchers;
import org.multiverse.api.TxnFactory;
import org.multiverse.api.exceptions.DeadTxnException;
import org.multiverse.api.exceptions.PreparedTxnException;
import org.multiverse.api.exceptions.TxnMandatoryException;
import org.multiverse.api.functions.Function;
import org.multiverse.api.functions.Functions;
import org.multiverse.api.functions.LongFunction;
import org.multiverse.stms.gamma.GammaStm;
import org.multiverse.stms.gamma.transactionalobjects.GammaTxnRef;
import org.multiverse.stms.gamma.transactionalobjects.txnref.TxnRefAwaitThread;
import org.multiverse.stms.gamma.transactions.GammaTxn;
import org.multiverse.stms.gamma.transactions.GammaTxnFactory;
import org.multiverse.stms.gamma.transactions.fat.FatFixedLengthGammaTxnFactory;
import org.multiverse.stms.gamma.transactions.fat.FatMonoGammaTxnFactory;
import org.multiverse.stms.gamma.transactions.fat.FatVariableLengthGammaTxnFactory;
import java.util.Collection;
import static java.util.Arrays.asList;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
import static org.multiverse.TestUtils.*;
import static org.multiverse.api.TxnThreadLocal.*;
import static org.multiverse.api.functions.Functions.identityLongFunction;
import static org.multiverse.api.functions.Functions.incLongFunction;
import static org.multiverse.stms.gamma.GammaTestUtils.*;
@RunWith(Parameterized.class)
public class GammaTxnRef_alterAndGet1Test {
private final GammaTxnFactory transactionFactory;
private final GammaStm stm;
public GammaTxnRef_alterAndGet1Test(GammaTxnFactory transactionFactory) {
this.transactionFactory = transactionFactory;
this.stm = transactionFactory.getConfig().getStm();
}
@Before
public void setUp() {
clearThreadLocalTxn();
}
@Parameterized.Parameters
public static Collection<TxnFactory[]> configs() {
return asList(
new TxnFactory[]{new FatVariableLengthGammaTxnFactory(new GammaStm())},
new TxnFactory[]{new FatFixedLengthGammaTxnFactory(new GammaStm())},
new TxnFactory[]{new FatMonoGammaTxnFactory(new GammaStm())}
);
}
@Test
public void whenActiveTransactionAvailableAndNullFunction_thenNullPointerException() {
GammaTxnRef<Long> ref = new GammaTxnRef<Long>(stm);
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
try {
ref.alterAndGet(null);
fail();
} catch (NullPointerException expected) {
}
assertIsAborted(tx);
assertSame(tx, getThreadLocalTxn());
}
@Test
public void whenFunctionCausesException() {
GammaTxnRef<Long> ref = new GammaTxnRef<Long>(stm);
Function<Long> function = mock(Function.class);
RuntimeException ex = new RuntimeException();
when(function.call(Matchers.<Long>anyObject())).thenThrow(ex);
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
try {
ref.alterAndGet(function);
fail();
} catch (RuntimeException found) {
assertSame(ex, found);
}
assertIsAborted(tx);
assertSame(tx, getThreadLocalTxn());
}
@Test
public void whenActiveTransactionAvailable() {
Long initialValue = 10L;
GammaTxnRef<Long> ref = new GammaTxnRef<Long>(stm, initialValue);
long initialVersion = ref.getVersion();
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
Function<Long> function = Functions.incLongFunction();
ref.alterAndGet(function);
assertEquals(new Long(initialValue + 1L), ref.get());
assertVersionAndValue(ref, initialVersion, initialValue);
tx.commit();
assertVersionAndValue(ref, initialVersion + 1, initialValue + 1);
}
@Test
public void whenActiveTransactionAvailableButNoChange_thenNoWrite() {
Long initialValue = 10L;
GammaTxnRef<Long> ref = new GammaTxnRef<Long>(stm, initialValue);
long initialVersion = ref.getVersion();
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
Function<Long> function = identityLongFunction();
ref.alterAndGet(function);
assertEquals(initialValue, ref.get());
assertVersionAndValue(ref, initialVersion, initialValue);
tx.commit();
assertVersionAndValue(ref, initialVersion, initialValue);
}
@Test
public void whenPreparedTransactionAvailable_thenPreparedTxnException() {
Long initialValue = 10L;
GammaTxnRef<Long> ref = new GammaTxnRef<Long>(stm, initialValue);
long initialVersion = ref.getVersion();
Function<Long> function = mock(LongFunction.class);
GammaTxn tx = transactionFactory.newTxn();
tx.prepare();
setThreadLocalTxn(tx);
try {
ref.alterAndGet(function);
fail();
} catch (PreparedTxnException expected) {
}
assertIsAborted(tx);
verifyZeroInteractions(function);
assertVersionAndValue(ref, initialVersion, initialValue);
}
@Test
public void whenNoTransactionAvailable_thenNoTransactionFoundException() {
Long initialValue = 10L;
GammaTxnRef<Long> ref = new GammaTxnRef<Long>(stm, initialValue);
long initialVersion = ref.getVersion();
Function<Long> function = Functions.incLongFunction(1);
try {
ref.alterAndGet(function);
fail();
} catch (TxnMandatoryException expected) {
}
assertVersionAndValue(ref, initialVersion, initialValue);
assertNull(getThreadLocalTxn());
assertSurplus(ref, 0);
assertRefHasNoLocks(ref);
}
@Test
public void whenCommittedTransactionAvailable_thenDeadTxnException() {
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
tx.commit();
long initialValue = 10;
GammaTxnRef<Long> ref = new GammaTxnRef<Long>(stm, initialValue);
long initialVersion = ref.getVersion();
Function<Long> function = Functions.incLongFunction(1);
try {
ref.alterAndGet(function);
fail();
} catch (DeadTxnException expected) {
}
assertIsCommitted(tx);
assertSame(tx, getThreadLocalTxn());
assertSurplus(ref, 0);
assertRefHasNoLocks(ref);
assertVersionAndValue(ref, initialVersion, initialValue);
}
@Test
public void whenAbortedTransactionAvailable_thenDeadTxnException() {
GammaTxn tx = transactionFactory.newTxn();
setThreadLocalTxn(tx);
tx.abort();
Long initialValue = 10L;
GammaTxnRef<Long> ref = new GammaTxnRef<Long>(stm, initialValue);
long initialVersion = ref.getVersion();
Function<Long> function = incLongFunction(1);
try {
ref.alterAndGet(function);
fail();
} catch (DeadTxnException expected) {
}
assertIsAborted(tx);
assertSame(tx, getThreadLocalTxn());
assertSurplus(ref, 0);
assertRefHasNoLocks(ref);
assertVersionAndValue(ref, initialVersion, initialValue);
}
@Test
public void whenListenersAvailable_thenTheyAreNotified() {
Long initialValue = 10L;
GammaTxnRef<Long> ref = new GammaTxnRef<Long>(stm, initialValue);
long initialVersion = ref.getVersion();
TxnRefAwaitThread thread = new TxnRefAwaitThread<Long>(ref, initialValue + 1L);
thread.start();
sleepMs(500);
GammaTxn tx = stm.newDefaultTxn();
setThreadLocalTxn(tx);
ref.alterAndGet(Functions.incLongFunction());
tx.commit();
joinAll(thread);
assertVersionAndValue(ref, initialVersion + 1, initialValue + 1);
}
}