package org.multiverse.stms.gamma.transactionalobjects.txnref;
import org.junit.Before;
import org.junit.Test;
import org.multiverse.api.LockMode;
import org.multiverse.stms.gamma.GammaStm;
import org.multiverse.stms.gamma.transactionalobjects.GammaTxnRef;
import org.multiverse.stms.gamma.transactions.GammaTxn;
import static org.junit.Assert.assertSame;
import static org.multiverse.stms.gamma.GammaTestUtils.assertRefHasLockMode;
import static org.multiverse.stms.gamma.GammaTestUtils.assertVersionAndValue;
public class GammaTxnRef_setAndLock3Test {
private GammaStm stm;
@Before
public void setUp(){
stm = new GammaStm();
}
@Test
public void whenLockFree(){
whenLockFree(LockMode.None);
whenLockFree(LockMode.Read);
whenLockFree(LockMode.Write);
whenLockFree(LockMode.Exclusive);
}
public void whenLockFree(LockMode lockMode){
String initialValue = "initialValue";
GammaTxnRef<String> ref = new GammaTxnRef<String>(stm, initialValue);
long initialVersion = ref.getVersion();
GammaTxn tx = stm.newDefaultTxn();
String newValue = "newValue";
String result = ref.setAndLock(tx, newValue,lockMode);
assertSame(newValue, result);
assertVersionAndValue(ref,initialVersion, initialValue);
assertRefHasLockMode(ref, tx, lockMode.asInt());
}
}