package org.jgroups.tests;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import org.jgroups.Global;
import java.util.concurrent.locks.ReentrantLock;
/**
* Tests the ReentrantLock
* @author Bela Ban
*/
@Test(groups=Global.FUNCTIONAL,sequential=true)
public class ReentrantLockTest {
ReentrantLock lock;
@BeforeMethod
public void setUp() throws Exception {
lock=new ReentrantLock();
}
@AfterMethod
public void tearDown() throws Exception {
releaseAll(lock);
lock=null;
}
public void testAcquireLock() {
lock.lock();
Assert.assertEquals(1, lock.getHoldCount());
lock.lock();
Assert.assertEquals(2, lock.getHoldCount());
release(lock);
Assert.assertEquals(1, lock.getHoldCount());
release(lock);
Assert.assertEquals(0, lock.getHoldCount());
}
public void testAcquireLock2() {
lock.lock();
Assert.assertEquals(1, lock.getHoldCount());
lock.lock();
Assert.assertEquals(2, lock.getHoldCount());
releaseAll(lock);
Assert.assertEquals(0, lock.getHoldCount());
}
private static void release(ReentrantLock lock) {
if(lock != null && lock.getHoldCount() > 0)
lock.unlock();
}
private static void releaseAll(ReentrantLock lock) {
if(lock != null) {
long holds=lock.getHoldCount();
if(holds > 0) {
for(int i=0; i < holds; i++)
lock.unlock();
}
}
}
}