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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.system.internal;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.util.concurrent.ScheduledExecutorService;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.onap.policy.drools.core.lock.AlwaysFailLock;
import org.onap.policy.drools.core.lock.Lock;
import org.onap.policy.drools.core.lock.LockCallback;
import org.onap.policy.drools.core.lock.LockState;
public class LockManagerTest {
private static final String OWNER_KEY = "my key";
private static final String RESOURCE = "my resource";
private static final String RESOURCE2 = "my resource #2";
private static final int HOLD_SEC = 100;
@Mock
private LockCallback callback;
@Mock
private ScheduledExecutorService exsvc;
private MyManager mgr;
/**
* Resets fields and creates {@link #mgr}.
*/
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
doAnswer(args -> {
args.getArgumentAt(0, Runnable.class).run();
return null;
}).when(exsvc).execute(any());
mgr = new MyManager();
}
@After
public void tearDown() {
}
@Test
public void testIsAlive() {
assertFalse(mgr.isAlive());
assertFalse(mgr.isLocked());
mgr.start();
assertTrue(mgr.isAlive());
assertFalse(mgr.isLocked());
mgr.stop();
assertFalse(mgr.isAlive());
}
@Test
public void testStart() {
assertTrue(mgr.start());
assertTrue(mgr.isAlive());
assertFalse(mgr.start());
assertTrue(mgr.isAlive());
mgr.stop();
assertTrue(mgr.start());
assertTrue(mgr.isAlive());
}
@Test
public void testStop() {
assertFalse(mgr.stop());
mgr.start();
assertTrue(mgr.stop());
assertFalse(mgr.isAlive());
}
@Test
public void testShutdown() {
mgr.start();
mgr.shutdown();
assertFalse(mgr.isAlive());
mgr.shutdown();
assertFalse(mgr.isAlive());
}
@Test
public void testIsLocked() {
assertFalse(mgr.isLocked());
assertFalse(mgr.isAlive());
mgr.lock();
assertTrue(mgr.isLocked());
assertFalse(mgr.isAlive());
mgr.unlock();
assertFalse(mgr.isLocked());
}
@Test
public void testLock() {
assertTrue(mgr.lock());
assertTrue(mgr.isLocked());
assertFalse(mgr.lock());
assertTrue(mgr.isLocked());
mgr.unlock();
assertTrue(mgr.lock());
assertTrue(mgr.isLocked());
}
@Test
public void testUnlock() {
assertFalse(mgr.unlock());
mgr.lock();
assertTrue(mgr.unlock());
assertFalse(mgr.isLocked());
}
@Test
public void testCreateLock() {
Lock lock = mgr.createLock(RESOURCE, OWNER_KEY, HOLD_SEC, callback, false);
assertTrue(lock.isActive());
verify(callback).lockAvailable(lock);
verify(callback, never()).lockUnavailable(lock);
// should not be able to lock it again
LockCallback callback2 = mock(LockCallback.class);
Lock lock2 = mgr.createLock(RESOURCE, OWNER_KEY, HOLD_SEC, callback2, false);
assertTrue(lock2.isUnavailable());
verify(callback2, never()).lockAvailable(lock2);
verify(callback2).lockUnavailable(lock2);
// should be able to lock another resource
LockCallback callback3 = mock(LockCallback.class);
Lock lock3 = mgr.createLock(RESOURCE2, OWNER_KEY, HOLD_SEC, callback3, false);
assertTrue(lock3.isActive());
verify(callback3).lockAvailable(lock3);
verify(callback3, never()).lockUnavailable(lock3);
}
/**
* Tests createLock() when the feature instance has changed.
*/
@Test
public void testCreateLockInstanceChanged() {
mgr = spy(mgr);
when(mgr.hasInstanceChanged()).thenReturn(true);
Lock lock = mgr.createLock(RESOURCE, OWNER_KEY, HOLD_SEC, callback, false);
assertTrue(lock instanceof AlwaysFailLock);
assertTrue(lock.isUnavailable());
verify(callback, never()).lockAvailable(lock);
verify(callback).lockUnavailable(lock);
}
@Test
public void testGetResource2lock() {
assertNotNull(mgr.getResource2lock());
}
private class MyManager extends LockManager<MyLock> {
@Override
protected boolean hasInstanceChanged() {
return false;
}
@Override
protected void finishLock(MyLock lock) {
lock.grant(true);
}
@Override
protected MyLock makeLock(LockState waiting, String resourceId, String ownerKey, int holdSec,
LockCallback callback) {
return new MyLock(waiting, resourceId, ownerKey, holdSec, callback);
}
}
private class MyLock extends FeatureLockImpl {
private static final long serialVersionUID = 1L;
public MyLock(LockState waiting, String resourceId, String ownerKey, int holdSec, LockCallback callback) {
super(waiting, resourceId, ownerKey, holdSec, callback);
}
@Override
public boolean free() {
return false;
}
@Override
public void extend(int holdSec, LockCallback callback) {
// do nothing
}
@Override
protected boolean addToFeature() {
return false;
}
@Override
public void notifyAvailable() {
getCallback().lockAvailable(this);
}
@Override
public void notifyUnavailable() {
getCallback().lockUnavailable(this);
}
@Override
protected ScheduledExecutorService getThreadPool() {
return exsvc;
}
}
}
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