package org.multiverse.stms.gamma.transactionalobjects.orec;
import org.junit.Before;
import org.junit.Test;
import org.multiverse.stms.gamma.GammaConstants;
import org.multiverse.stms.gamma.GammaStm;
import org.multiverse.stms.gamma.transactionalobjects.AbstractGammaObject;
import org.multiverse.stms.gamma.transactionalobjects.GammaTxnLong;
import static junit.framework.Assert.assertEquals;
import static org.multiverse.TestUtils.*;
import static org.multiverse.stms.gamma.GammaTestUtils.*;
public class Orec_arriveTest implements GammaConstants {
private GammaStm stm;
@Before
public void setUp() {
stm = new GammaStm();
}
// ======================= write biased ==============================
@Test
public void writeBiased_whenNotLockedAndNoSurplus_thenNormalArrive() {
AbstractGammaObject orec = new GammaTxnLong(stm, 0);
int result = orec.arrive(1);
assertHasMasks(result, MASK_SUCCESS);
assertNotHasMasks(result, MASK_CONFLICT, MASK_UNREGISTERED);
assertSurplus(orec, 1);
assertReadonlyCount(orec, 0);
assertWriteBiased(orec);
assertLockMode(orec, LOCKMODE_NONE);
}
@Test
public void writeBiased_whenNotLockedAndSurplus_thenNormalArrive() {
AbstractGammaObject orec = new GammaTxnLong(stm);
orec.arrive(1);
orec.arrive(1);
int result = orec.arrive(1);
assertHasMasks(result, MASK_SUCCESS);
assertNotHasMasks(result, MASK_CONFLICT, MASK_UNREGISTERED);
assertWriteBiased(orec);
assertSurplus(orec, 3);
assertReadonlyCount(orec, 0);
assertLockMode(orec, LOCKMODE_NONE);
}
@Test
public void writeBiased_whenExclusiveLock_thenLockNotFree() {
AbstractGammaObject orec = new GammaTxnLong(stm);
orec.arriveAndLock(1, LOCKMODE_EXCLUSIVE);
long orecValue = orec.orec;
int result = orec.arrive(1);
assertEquals(FAILURE, result);
assertOrecValue(orec, orecValue);
}
@Test
public void writeBiased_whenWriteLock_thenArriveSuccess() {
AbstractGammaObject orec = new GammaTxnLong(stm);
orec.arriveAndLock(1, LOCKMODE_WRITE);
int result = orec.arrive(1);
assertHasMasks(result, MASK_SUCCESS);
assertNotHasMasks(result, MASK_CONFLICT, MASK_CONFLICT);
assertSurplus(orec, 2);
assertReadonlyCount(orec, 0);
assertWriteBiased(orec);
assertLockMode(orec, LOCKMODE_WRITE);
}
// ======================= read biased ==============================
@Test
public void readBiased_whenNoSurplus() {
AbstractGammaObject orec = makeReadBiased(new GammaTxnLong(stm));
int result = orec.arrive(1);
assertHasMasks(result, MASK_SUCCESS, MASK_UNREGISTERED);
assertNotHasMasks(result, MASK_CONFLICT);
assertLockMode(orec, LOCKMODE_NONE);
assertSurplus(orec, 1);
assertReadBiased(orec);
assertReadonlyCount(orec, 0);
}
@Test
public void readBiased_whenSurplus_thenCallIgnored() {
AbstractGammaObject orec = makeReadBiased(new GammaTxnLong(stm));
orec.arrive(1);
long orecValue = orec.orec;
int result = orec.arrive(1);
assertHasMasks(result, MASK_SUCCESS, MASK_UNREGISTERED);
assertNotHasMasks(result, MASK_CONFLICT);
assertOrecValue(orec, orecValue);
}
@Test
public void readBiased_whenReadLockAcquired() {
AbstractGammaObject orec = makeReadBiased(new GammaTxnLong(stm));
orec.arriveAndLock(1, LOCKMODE_READ);
long orecValue = orec.orec;
int result = orec.arrive(1);
assertHasMasks(result, MASK_SUCCESS, MASK_UNREGISTERED);
assertNotHasMasks(result, MASK_CONFLICT);
assertOrecValue(orec, orecValue);
}
@Test
public void readBiased_whenWriteLockAcquired() {
AbstractGammaObject orec = makeReadBiased(new GammaTxnLong(stm));
orec.arriveAndLock(1, LOCKMODE_WRITE);
long orecValue = orec.orec;
int result = orec.arrive(1);
assertHasMasks(result, MASK_SUCCESS, MASK_UNREGISTERED);
assertNotHasMasks(result, MASK_CONFLICT);
assertOrecValue(orec, orecValue);
}
@Test
public void readBiased_whenExclusiveLockAquired() {
AbstractGammaObject orec = makeReadBiased(new GammaTxnLong(stm));
orec.arriveAndLock(1, LOCKMODE_EXCLUSIVE);
long orecValue = orec.orec;
int result = orec.arrive(1);
assertFailure(result);
assertOrecValue(orec, orecValue);
}
}