1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/json/src/test/java/org/netbeans/html/json/impl/ParallelChangeTest.java Thu May 05 05:18:04 2016 +0200
1.3 @@ -0,0 +1,167 @@
1.4 +/**
1.5 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
1.6 + *
1.7 + * Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.
1.8 + *
1.9 + * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
1.10 + * Other names may be trademarks of their respective owners.
1.11 + *
1.12 + * The contents of this file are subject to the terms of either the GNU
1.13 + * General Public License Version 2 only ("GPL") or the Common
1.14 + * Development and Distribution License("CDDL") (collectively, the
1.15 + * "License"). You may not use this file except in compliance with the
1.16 + * License. You can obtain a copy of the License at
1.17 + * http://www.netbeans.org/cddl-gplv2.html
1.18 + * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
1.19 + * specific language governing permissions and limitations under the
1.20 + * License. When distributing the software, include this License Header
1.21 + * Notice in each file and include the License file at
1.22 + * nbbuild/licenses/CDDL-GPL-2-CP. Oracle designates this
1.23 + * particular file as subject to the "Classpath" exception as provided
1.24 + * by Oracle in the GPL Version 2 section of the License file that
1.25 + * accompanied this code. If applicable, add the following below the
1.26 + * License Header, with the fields enclosed by brackets [] replaced by
1.27 + * your own identifying information:
1.28 + * "Portions Copyrighted [year] [name of copyright owner]"
1.29 + *
1.30 + * Contributor(s):
1.31 + *
1.32 + * The Original Software is NetBeans. The Initial Developer of the Original
1.33 + * Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.
1.34 + *
1.35 + * If you wish your version of this file to be governed by only the CDDL
1.36 + * or only the GPL Version 2, indicate your decision by adding
1.37 + * "[Contributor] elects to include this software in this distribution
1.38 + * under the [CDDL or GPL Version 2] license." If you do not indicate a
1.39 + * single choice of license, a recipient has the option to distribute
1.40 + * your version of this file under either the CDDL, the GPL Version 2 or
1.41 + * to extend the choice of license to its licensees as provided above.
1.42 + * However, if you add GPL Version 2 code and therefore, elected the GPL
1.43 + * Version 2 license, then the option applies only if the new code is
1.44 + * made subject to such option by the copyright holder.
1.45 + */
1.46 +package org.netbeans.html.json.impl;
1.47 +
1.48 +import java.util.concurrent.CountDownLatch;
1.49 +import java.util.concurrent.ExecutorService;
1.50 +import java.util.concurrent.Executors;
1.51 +import java.util.concurrent.TimeUnit;
1.52 +import net.java.html.BrwsrCtx;
1.53 +import net.java.html.json.ComputedProperty;
1.54 +import net.java.html.json.Model;
1.55 +import net.java.html.json.Property;
1.56 +import org.netbeans.html.context.spi.Contexts;
1.57 +import org.netbeans.html.json.spi.Technology;
1.58 +import org.netbeans.html.json.spi.Transfer;
1.59 +import org.testng.annotations.BeforeMethod;
1.60 +import org.testng.annotations.Test;
1.61 +import static org.testng.Assert.assertEquals;
1.62 +
1.63 +public class ParallelChangeTest {
1.64 + private DeepChangeTest.MapTechnology t;
1.65 + private BrwsrCtx c;
1.66 +
1.67 + @BeforeMethod public void initTechnology() {
1.68 + t = new DeepChangeTest.MapTechnology();
1.69 + c = Contexts.newBuilder().register(Technology.class, t, 1).
1.70 + register(Transfer.class, t, 1).build();
1.71 + }
1.72 +
1.73 + @Test
1.74 + public void multipleValues() throws InterruptedException {
1.75 + doTest(true);
1.76 + }
1.77 +
1.78 + @Test
1.79 + public void singleValue() throws InterruptedException {
1.80 + doTest(false);
1.81 + }
1.82 +
1.83 + private void doTest(boolean multipleValues) throws InterruptedException {
1.84 + class Test implements Runnable {
1.85 + final int index;
1.86 + final Depending dep;
1.87 + private RuntimeException runtimeException;
1.88 +
1.89 + public Test(int index, Depending dep) {
1.90 + this.index = index;
1.91 + this.dep = dep;
1.92 + }
1.93 +
1.94 + @Override
1.95 + public void run() {
1.96 + try {
1.97 + int value = dep.getPlus();
1.98 + assertEquals(value, index + 11);
1.99 + } catch (RuntimeException ex) {
1.100 + this.runtimeException = ex;
1.101 + }
1.102 + }
1.103 +
1.104 + private void assertException() {
1.105 + if (runtimeException != null) {
1.106 + throw runtimeException;
1.107 + }
1.108 + }
1.109 + }
1.110 +
1.111 + Depending[] deps = new Depending[2];
1.112 + BlockingValue[] values = new BlockingValue[deps.length];
1.113 + CountDownLatch blockInCall = new CountDownLatch(deps.length);
1.114 + Test[] runs = new Test[deps.length];
1.115 + ExecutorService exec = Executors.newFixedThreadPool(deps.length);
1.116 + for (int i = 0; i < deps.length; i++) {
1.117 + if (multipleValues) {
1.118 + values[i] = new BlockingValue();
1.119 + } else {
1.120 + values[i] = i == 0 ? new BlockingValue() : values[0];
1.121 + }
1.122 + BlockingValueCntrl.initialize(blockInCall);
1.123 + deps[i] = new Depending(i, values[i]);
1.124 + runs[i] = new Test(i, deps[i]);
1.125 + exec.execute(runs[i]);
1.126 + }
1.127 +
1.128 + exec.awaitTermination(1, TimeUnit.SECONDS);
1.129 +
1.130 + for (int i = 0; i < deps.length; i++) {
1.131 + runs[i].assertException();
1.132 + values[i].setValue(30);
1.133 + assertEquals(deps[i].getPlus(), i + 42);
1.134 + }
1.135 + }
1.136 +
1.137 + @Model(className="BlockingValue", properties = {
1.138 + @Property(name = "value", type = int.class)
1.139 + })
1.140 + static class BlockingValueCntrl {
1.141 + private static CountDownLatch latch;
1.142 +
1.143 + static void initialize(CountDownLatch l) {
1.144 + latch = l;
1.145 + }
1.146 +
1.147 + @ComputedProperty
1.148 + static int plusOne(int value) {
1.149 + latch.countDown();
1.150 + try {
1.151 + latch.await();
1.152 + } catch (InterruptedException ex) {
1.153 + throw new IllegalStateException(ex);
1.154 + }
1.155 + return value + 1;
1.156 + }
1.157 + }
1.158 +
1.159 + @Model(className = "Depending", properties = {
1.160 + @Property(name = "add", type = int.class),
1.161 + @Property(name = "dep", type = BlockingValue.class)
1.162 + })
1.163 + static class DependingCntrl {
1.164 + @ComputedProperty
1.165 + static int plus(BlockingValue dep, int add) {
1.166 + return dep.getPlusOne() + 10;
1.167 + }
1.168 + }
1.169 +
1.170 +}