راهی جدید برای تست برنامه‌های چندریسه‌ای با استفاده از JUNIT

public class Counter {     private int count=0;     public void addOne()     {         count++;     }     public int getCount()     {         return count;     }     }

import static org.junit.Assert.assertEquals; import org.junit.After; import org.junit.Test; import org.junit.runner.RunWith; import com.anarsoft.vmlens.concurrent.junit.ConcurrentTestRunner; @RunWith(ConcurrentTestRunner.class) public class TestCounter {     private Counter counter = new Counter();     @Test     public void addOne()     {         counter.addOne();     }     @After     public void testCount()     {         assertEquals("4 Threads running addOne in parallel should lead to 4" , 4 , counter);     } }

private volatile int count=0;

java.lang.AssertionError: 4 Threads running addOne in parallel should lead to 4 expected:<4> but was:<3>     at org.junit.Assert.fail(Assert.java:88)     at org.junit.Assert.failNotEquals(Assert.java:834)     at org.junit.Assert.assertEquals(Assert.java:645)     at TestCounter.testCount(TestCounter.java:21)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)     at java.lang.reflect.Method.invoke(Unknown Source)     at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)     at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)     at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)     at com.anarsoft.vmlens.concurrent.junit.internal.InvokeListOfMethods.evaluate(InvokeListOfMethods.java:23)     at com.anarsoft.vmlens.concurrent.junit.internal.ConcurrentStatement.evaluateStatement(ConcurrentStatement.java:12)     at com.anarsoft.vmlens.concurrent.junit.ConcurrentTestRunner.evaluateStatement(ConcurrentTestRunner.java:212)     at com.anarsoft.vmlens.concurrent.junit.ConcurrentTestRunner.runChildrenConcurrently(ConcurrentTestRunner.java:172)     at com.anarsoft.vmlens.concurrent.junit.ConcurrentTestRunner.access$0(ConcurrentTestRunner.java:78)     at com.anarsoft.vmlens.concurrent.junit.ConcurrentTestRunner$1.evaluate(ConcurrentTestRunner.java:72)     at org.junit.runners.ParentRunner.run(ParentRunner.java:363)     at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)     at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

ALOAD 0: this DUP GETFIELD Counter.count : int ICONST_1 IADD PUTFIELD Counter.count : int

import java.util.concurrent.atomic.AtomicInteger; public class Counter {     private final AtomicInteger  count= new AtomicInteger();     public void addOne()     {         count.incrementAndGet();     }     public int getCount()     {         return count.get();     }     }