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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 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.openecomp.sdc.common.data_structure;
import static org.junit.Assert.assertTrue;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.junit.Test;
import org.openecomp.sdc.common.datastructure.CapList;
public class CapListTest {
public enum LIST_ACTION {
Add, Remove, Size, Get
}
@Test
public void testCap() {
List<Integer> testList = new CapList<>(10);
for (int i = 0; i < 100; i++) {
testList.add(i);
}
assertTrue(testList.size() == 10);
for (int i = 0; i < testList.size(); i++) {
assertTrue(testList.get(i) == (i + 90));
}
}
@Test
public void testThreadSafe() {
List<Integer> testList = new CapList<>(1000);
ExecutorService executor = Executors.newFixedThreadPool(4);
for (int i = 0; i < 10; i++) {
Runnable worker;
// 0 - 4
if (i < 5) {
worker = new ThreadWorker(i, LIST_ACTION.Add, testList);
}
// 5, 8
else if (i == 5 || i == 8) {
worker = new ThreadWorker(i, LIST_ACTION.Remove, testList);
}
// 6
else if (i == 6) {
worker = new ThreadWorker(i, LIST_ACTION.Size, testList);
}
// 7, 9
else {
worker = new ThreadWorker(i, LIST_ACTION.Get, testList);
}
executor.execute(worker);
}
executor.shutdown();
while (!executor.isTerminated()) {
}
assertTrue(testList.size() == 60);
}
public static class ThreadWorker implements Runnable {
private LIST_ACTION action;
private List<Integer> list;
private Integer id;
ThreadWorker(Integer id, LIST_ACTION action, List<Integer> list) {
this.action = action;
this.list = list;
this.id = id;
}
@Override
public void run() {
for (int i = 0; i < 20; i++) {
threadNap();
switch (action) {
case Add:
list.add(id * 100 + i);
break;
case Remove: {
int index = (int) (Math.random() * 10);
list.remove(index);
break;
}
case Get:
int index = (int) (Math.random() * 10);
Integer integer = list.get(index);
break;
case Size:
int size = list.size();
break;
}
}
}
private void threadNap() {
long napTime = (long) (Math.random() * 100);
try {
Thread.sleep(napTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
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