TestGcWithWorldNodeAom.java

package jvstm.test.jwormbench.utest;

import junit.framework.Assert;
import jvstm.Transaction;
import jvstm.VBox;
import jvstm.test.jwormbench.JvstmBenchNodeFactory;
import jwormbench.core.INode;

import org.junit.Test;

public class TestGcWithWorldNodeAom {

    @Test
    public void performTest(){
        JvstmBenchNodeFactory fac = new JvstmBenchNodeFactory();
        INode node = fac.make(7);
        int trxNumber = Transaction.mostRecentCommittedRecord.transactionNumber;

        // The factory instantiates a WorlNode object and the
        // constructor does not invoke any barrier, so the
        // node must remain in the compact layout.
        Assert.assertSame(null, ((VBox) node).body);

        // The following update is made inside an explicit transaction.
        Transaction.begin();
        node.setValue(node.getValue() + 1);
        Transaction.commit();
        Assert.assertEquals(++trxNumber, ((VBox) node).body.version);
        Assert.assertEquals(0, ((VBox) node).body.next.version);
        Assert.assertEquals(8, node.getValue()); // the body contains the new value
    }
}