| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| package com.datatorrent.lib.appdata.query; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import com.google.common.base.Preconditions; |
| |
| import com.datatorrent.lib.appdata.QueueUtils.ConditionBarrier; |
| |
| public class QueueUtilsTest |
| { |
| @Test |
| public void conditionBarrierBlockTest() throws Exception |
| { |
| ConditionBarrier cb = new ConditionBarrier(); |
| cb.lock(); |
| |
| blockBarrierTest(cb); |
| } |
| |
| @Test |
| public void conditionBarrierPassTest() throws Exception |
| { |
| ConditionBarrier cb = new ConditionBarrier(); |
| |
| passBarrierTest(cb); |
| } |
| |
| @Test |
| public void passThenBlockThenPassTest() throws Exception |
| { |
| ConditionBarrier cb = new ConditionBarrier(); |
| |
| passBarrierTest(cb); |
| cb.lock(); |
| blockBarrierTest(cb); |
| cb.unlock(); |
| passBarrierTest(cb); |
| } |
| |
| private void passBarrierTest(ConditionBarrier cb) throws Exception |
| { |
| Thread thread = new Thread(new BarrierThread(cb)); |
| thread.start(); |
| Thread.sleep(100); |
| |
| Assert.assertEquals(Thread.State.TERMINATED, thread.getState()); |
| } |
| |
| private void blockBarrierTest(ConditionBarrier cb) throws Exception |
| { |
| Thread thread = new Thread(new BarrierThread(cb)); |
| thread.start(); |
| Thread.sleep(100); |
| |
| Assert.assertEquals(Thread.State.WAITING, thread.getState()); |
| } |
| |
| public static class BarrierThread implements Runnable |
| { |
| private ConditionBarrier cb; |
| |
| public BarrierThread(ConditionBarrier cb) |
| { |
| this.cb = Preconditions.checkNotNull(cb); |
| } |
| |
| @Override |
| public void run() |
| { |
| cb.gate(); |
| } |
| } |
| } |