package org.multiverse.commitbarriers;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.multiverse.TestThread;
import org.multiverse.api.Txn;
import org.multiverse.api.callables.TxnVoidCallable;
import org.multiverse.stms.gamma.GammaStm;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.multiverse.TestUtils.*;
import static org.multiverse.api.TxnThreadLocal.clearThreadLocalTxn;
public class CountDownCommitBarrier_abortTest {
private CountDownCommitBarrier barrier;
private GammaStm stm;
@Before
public void setUp() {
stm = new GammaStm();
clearThreadLocalTxn();
clearCurrentThreadInterruptedStatus();
}
@After
public void tearDown() {
clearCurrentThreadInterruptedStatus();
}
@Test
public void whenNoPartiesWaiting() {
barrier = new CountDownCommitBarrier(1);
barrier.abort();
assertTrue(barrier.isAborted());
}
@Test
public void whenPartiesWaiting_theyAreAborted() {
barrier = new CountDownCommitBarrier(3);
CommitThread thread1 = new CommitThread(barrier);
CommitThread thread2 = new CommitThread(barrier);
startAll(thread1, thread2);
sleepMs(500);
barrier.abort();
sleepMs(500);
assertTrue(barrier.isAborted());
assertIsAborted(thread1.txn);
assertIsAborted(thread2.txn);
}
class CommitThread extends TestThread {
final CountDownCommitBarrier barrier;
Txn txn;
CommitThread(CountDownCommitBarrier barrier) {
setPrintStackTrace(false);
this.barrier = barrier;
}
@Override
public void doRun() throws Exception {
stm.getDefaultTxnExecutor().execute(new TxnVoidCallable() {
@Override
public void call(Txn txn) throws Exception {
CommitThread.this.txn = txn;
barrier.joinCommitUninterruptibly(txn);
}
});
}
}
@Test
public void whenAborted_thenIgnored() {
barrier = new CountDownCommitBarrier(1);
barrier.abort();
barrier.abort();
assertTrue(barrier.isAborted());
}
@Test
public void whenCommitted_thenClosedCommitBarrierException() {
barrier = new CountDownCommitBarrier(0);
try {
barrier.abort();
fail();
} catch (CommitBarrierOpenException expected) {
}
assertTrue(barrier.isCommitted());
}
}