/*
* Copyright (C) 2012 Facebook, Inc.
*
* 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.
*/
package com.facebook.concurrency;
import com.facebook.testing.MockExecutor;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
public class TestTaskGroup {
private ExecutorService executor1;
private ExecutorService executor2;
@BeforeMethod(alwaysRun = true)
public void setUp() throws Exception {
executor1 = Executors.newSingleThreadExecutor();
executor2 = Executors.newSingleThreadExecutor();
}
@AfterMethod(alwaysRun = true)
public void tearDown() throws Exception {
executor1.shutdownNow();
executor2.shutdownNow();
}
@Test(groups = "fast")
public void testSanity() throws Exception {
MockExecutor mockExecutor = new MockExecutor();
TaskGroup taskGroup = new TaskGroup(mockExecutor);
// Register some tasks
DelayRunnable runnable1 = new DelayRunnable();
DelayRunnable runnable2 = new DelayRunnable();
DelayRunnable runnable3 = new DelayRunnable();
taskGroup.register(runnable1);
taskGroup.register(runnable2);
taskGroup.register(runnable3);
TaskGroup.FinishLatch latch = taskGroup.execute();
// Run all tasks
mockExecutor.drain();
// Should not block
latch.await();
Assert.assertTrue(runnable1.isRun());
Assert.assertTrue(runnable2.isRun());
Assert.assertTrue(runnable3.isRun());
}
@Test(groups = "fast")
public void testSingleExecutor() throws Exception {
TaskGroup taskGroup = new TaskGroup(executor1);
DelayRunnable runnable1 = new DelayRunnable(500);
DelayRunnable runnable2 = new DelayRunnable(0);
taskGroup.register(runnable1);
taskGroup.register(runnable2);
taskGroup.execute().await();
// Regardless of delay, all tasks should be run
Assert.assertTrue(runnable1.isRun());
Assert.assertTrue(runnable2.isRun());
}
@Test(groups = "fast")
public void testMultipleExecutor() throws Exception {
TaskGroup taskGroup = new TaskGroup();
DelayRunnable runnable1 = new DelayRunnable(500);
DelayRunnable runnable2 = new DelayRunnable(0);
DelayRunnable runnable3 = new DelayRunnable(100);
taskGroup.register(executor1, runnable1);
taskGroup.register(executor2, runnable2);
taskGroup.register(executor2, runnable3);
taskGroup.execute().await();
// Regardless of delay, all tasks should be run
Assert.assertTrue(runnable1.isRun());
Assert.assertTrue(runnable2.isRun());
Assert.assertTrue(runnable3.isRun());
}
private static class DelayRunnable implements Runnable {
private volatile boolean isRun = false;
private final long delayMillis;
private DelayRunnable(long delayMillis) {
this.delayMillis = delayMillis;
}
private DelayRunnable() {
this(0);
}
@Override
public void run() {
try {
TimeUnit.MILLISECONDS.sleep(delayMillis);
} catch (InterruptedException e) {
// Do nothing
}
isRun = true;
}
public boolean isRun() {
return isRun;
}
}
}