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Add test to check that each thread has it's own execution counter

This commit is contained in:
Miguel Ferreira 2015-12-17 16:29:59 +01:00
parent 24277e1d8e
commit 21d2423709
1 changed files with 45 additions and 0 deletions
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45
plugins/network-elements/nicira-nvp/src/test/java/com/cloud/network/nicira/ExecutionCounterTest.java
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@ -22,6 +22,10 @@ package com.cloud.network.nicira;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.Test;
public class ExecutionCounterTest {
@ -52,4 +56,45 @@ public class ExecutionCounterTest {
assertThat(executionCounter.hasReachedExecutionLimit(), equalTo(true));
}
@Test
public void testConcurrentUpdatesToCounter() throws Exception {
final ExecutionCounter executionCounter = new ExecutionCounter(0);
final ExecutorService executorService = Executors.newFixedThreadPool(3);
final AtomicInteger counterTask1 = new AtomicInteger(-1);
final AtomicInteger counterTask2 = new AtomicInteger(-1);
final AtomicInteger counterTask3 = new AtomicInteger(-1);
final Runnable task1 = new Runnable() {
@Override
public void run() {
executionCounter.incrementExecutionCounter().incrementExecutionCounter();
executionCounter.incrementExecutionCounter().incrementExecutionCounter();
counterTask1.set(executionCounter.getValue());
}
};
final Runnable task2 = new Runnable() {
@Override
public void run() {
executionCounter.incrementExecutionCounter().incrementExecutionCounter();
counterTask2.set(executionCounter.getValue());
}
};
final Runnable task3 = new Runnable() {
@Override
public void run() {
counterTask3.set(executionCounter.getValue());
}
};
executorService.execute(task1);
executorService.execute(task2);
executorService.execute(task3);
executorService.shutdown();
assertThat(counterTask1.get(), equalTo(4));
assertThat(counterTask2.get(), equalTo(2));
assertThat(counterTask3.get(), equalTo(0));
}
}