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/*
* Copyright 2014 Open Networking Laboratory
*
* 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 org.onlab.nio;
import org.junit.Before;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import static java.util.concurrent.Executors.newSingleThreadExecutor;
import static org.junit.Assert.fail;
import static org.onlab.util.Tools.namedThreads;
/**
* Base class for various NIO loop unit tests.
*/
public abstract class AbstractLoopTest {
protected static final long MAX_MS_WAIT = 1500;
/** Block on specified countdown latch. Return when countdown reaches
* zero, or fail the test if the {@value #MAX_MS_WAIT} ms timeout expires.
*
* @param latch the latch
* @param label an identifying label
*/
protected void waitForLatch(CountDownLatch latch, String label) {
try {
boolean ok = latch.await(MAX_MS_WAIT, TimeUnit.MILLISECONDS);
if (!ok) {
fail("Latch await timeout! [" + label + "]");
}
} catch (InterruptedException e) {
System.out.println("Latch interrupt [" + label + "] : " + e);
fail("Unexpected interrupt");
}
}
protected ExecutorService exec;
@Before
public void setUp() {
exec = newSingleThreadExecutor(namedThreads("test"));
}
}
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