avoids reusing Executor's Thread instances

src/test/java/org/junit/tests/experimental/parallel/ParallelMethodTest.java

@@ -10,28 +10,38 @@
 import org.junit.runner.JUnitCore;
 import org.junit.runner.Result;
 import org.junit.Before;
+import org.junit.BeforeClass;
+import java.util.concurrent.CountDownLatch;
 
 public class ParallelMethodTest {
 	private static volatile Thread fOne= null;
 	private static volatile Thread fTwo= null;
 
 	public static class Example {
-		@Test public void one() {
+		private static volatile CountDownLatch fSynchronizer;
+
+		@BeforeClass public static void init() {
+			fSynchronizer= new CountDownLatch(2);
+		}
+		@Test public void one() throws InterruptedException {
+			fSynchronizer.countDown();
+			fSynchronizer.await();
 			fOne= Thread.currentThread();
 		}
-		@Test public void two() {
+		@Test public void two() throws InterruptedException {
+			fSynchronizer.countDown();
+			fSynchronizer.await();
 			fTwo= Thread.currentThread();
 		}
 	}
 
-	@Before public void cleanupReferences() {
+	@Before public void init() {
 		fOne= null;
 		fTwo= null;
 	}
 
 	@Test public void testsRunInParallel() {
-		Result result= JUnitCore.runClasses(ParallelComputer.methods(),
-				Example.class);
+		Result result= JUnitCore.runClasses(ParallelComputer.methods(), Example.class);
 		assertTrue(result.wasSuccessful());
 		assertNotNull(fOne);
 		assertNotNull(fTwo);