--- jsr166/src/test/tck/JSR166TestCase.java	2011/05/07 19:03:26	1.78
+++ jsr166/src/test/tck/JSR166TestCase.java	2013/02/06 19:55:06	1.102
@@ -7,10 +7,22 @@
  */
 
 import junit.framework.*;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.lang.management.ManagementFactory;
+import java.lang.management.ThreadInfo;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Date;
+import java.util.Enumeration;
+import java.util.List;
 import java.util.NoSuchElementException;
 import java.util.PropertyPermission;
 import java.util.concurrent.*;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicReference;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 import static java.util.concurrent.TimeUnit.NANOSECONDS;
@@ -63,7 +75,7 @@ import java.security.SecurityPermission;
  *
  * </ol>
  *
- * <p> <b>Other notes</b>
+ * <p><b>Other notes</b>
  * <ul>
  *
  * <li> Usually, there is one testcase method per JSR166 method
@@ -136,7 +148,9 @@ public class JSR166TestCase extends Test
     }
 
     /**
-     * Runs all JSR166 unit tests using junit.textui.TestRunner
+     * Runs all JSR166 unit tests using junit.textui.TestRunner.
+     * Optional command line arg provides the number of iterations to
+     * repeat running the tests.
      */
     public static void main(String[] args) {
         if (useSecurityManager) {
@@ -168,11 +182,42 @@ public class JSR166TestCase extends Test
         return suite;
     }
 
+    public static void addNamedTestClasses(TestSuite suite,
+                                           String... testClassNames) {
+        for (String testClassName : testClassNames) {
+            try {
+                Class<?> testClass = Class.forName(testClassName);
+                Method m = testClass.getDeclaredMethod("suite",
+                                                       new Class<?>[0]);
+                suite.addTest(newTestSuite((Test)m.invoke(null)));
+            } catch (Exception e) {
+                throw new Error("Missing test class", e);
+            }
+        }
+    }
+
+    public static final double JAVA_CLASS_VERSION;
+    static {
+        try {
+            JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
+                new java.security.PrivilegedAction<Double>() {
+                public Double run() {
+                    return Double.valueOf(System.getProperty("java.class.version"));}});
+        } catch (Throwable t) {
+            throw new Error(t);
+        }
+    }
+
+    public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
+    public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
+    public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
+
     /**
      * Collects all JSR166 unit tests as one suite.
      */
     public static Test suite() {
-        return newTestSuite(
+        // Java7+ test classes
+        TestSuite suite = newTestSuite(
             ForkJoinPoolTest.suite(),
             ForkJoinTaskTest.suite(),
             RecursiveActionTest.suite(),
@@ -237,6 +282,18 @@ public class JSR166TestCase extends Test
             TreeSetTest.suite(),
             TreeSubMapTest.suite(),
             TreeSubSetTest.suite());
+
+        // Java8+ test classes
+        if (atLeastJava8()) {
+            String[] java8TestClassNames = {
+                "CompletableFutureTest",
+                "ForkJoinPool8Test",
+                "StampedLockTest",
+            };
+            addNamedTestClasses(suite, java8TestClassNames);
+        }
+
+        return suite;
     }
 
 
@@ -254,7 +311,6 @@ public class JSR166TestCase extends Test
         return 50;
     }
 
-
     /**
      * Sets delays as multiples of SHORT_DELAY.
      */
@@ -266,6 +322,22 @@ public class JSR166TestCase extends Test
     }
 
     /**
+     * Returns a timeout in milliseconds to be used in tests that
+     * verify that operations block or time out.
+     */
+    long timeoutMillis() {
+        return SHORT_DELAY_MS / 4;
+    }
+
+    /**
+     * Returns a new Date instance representing a time delayMillis
+     * milliseconds in the future.
+     */
+    Date delayedDate(long delayMillis) {
+        return new Date(System.currentTimeMillis() + delayMillis);
+    }
+
+    /**
      * The first exception encountered if any threadAssertXXX method fails.
      */
     private final AtomicReference<Throwable> threadFailure
@@ -286,9 +358,13 @@ public class JSR166TestCase extends Test
     }
 
     /**
+     * Extra checks that get done for all test cases.
+     *
      * Triggers test case failure if any thread assertions have failed,
      * by rethrowing, in the test harness thread, any exception recorded
      * earlier by threadRecordFailure.
+     *
+     * Triggers test case failure if interrupt status is set in the main thread.
      */
     public void tearDown() throws Exception {
         Throwable t = threadFailure.getAndSet(null);
@@ -306,6 +382,32 @@ public class JSR166TestCase extends Test
                 throw afe;
             }
         }
+
+        if (Thread.interrupted())
+            throw new AssertionFailedError("interrupt status set in main thread");
+
+        checkForkJoinPoolThreadLeaks();
+    }
+
+    /**
+     * Find missing try { ... } finally { joinPool(e); }
+     */
+    void checkForkJoinPoolThreadLeaks() throws InterruptedException {
+        Thread[] survivors = new Thread[5];
+        int count = Thread.enumerate(survivors);
+        for (int i = 0; i < count; i++) {
+            Thread thread = survivors[i];
+            String name = thread.getName();
+            if (name.startsWith("ForkJoinPool-")) {
+                // give thread some time to terminate
+                thread.join(LONG_DELAY_MS);
+                if (!thread.isAlive()) continue;
+                thread.stop();
+                throw new AssertionFailedError
+                    (String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
+                                   toString(), name));
+            }
+        }
     }
 
     /**
@@ -437,27 +539,27 @@ public class JSR166TestCase extends Test
         else {
             AssertionFailedError afe =
                 new AssertionFailedError("unexpected exception: " + t);
-            t.initCause(t);
+            afe.initCause(t);
             throw afe;
         }
     }
 
     /**
-     * Delays, via Thread.sleep for the given millisecond delay, but
+     * Delays, via Thread.sleep, for the given millisecond delay, but
      * if the sleep is shorter than specified, may re-sleep or yield
      * until time elapses.
      */
-    public static void delay(long ms) throws InterruptedException {
+    static void delay(long millis) throws InterruptedException {
         long startTime = System.nanoTime();
-        long ns = ms * 1000 * 1000;
+        long ns = millis * 1000 * 1000;
         for (;;) {
-            if (ms > 0L)
-                Thread.sleep(ms);
+            if (millis > 0L)
+                Thread.sleep(millis);
             else // too short to sleep
                 Thread.yield();
             long d = ns - (System.nanoTime() - startTime);
             if (d > 0L)
-                ms = d / (1000 * 1000);
+                millis = d / (1000 * 1000);
             else
                 break;
         }
@@ -466,7 +568,7 @@ public class JSR166TestCase extends Test
     /**
      * Waits out termination of a thread pool or fails doing so.
      */
-    public void joinPool(ExecutorService exec) {
+    void joinPool(ExecutorService exec) {
         try {
             exec.shutdown();
             assertTrue("ExecutorService did not terminate in a timely manner",
@@ -479,21 +581,82 @@ public class JSR166TestCase extends Test
     }
 
     /**
-     * Checks that thread does not terminate within timeoutMillis
-     * milliseconds (that is, Thread.join times out).
+     * A debugging tool to print all stack traces, as jstack does.
+     */
+    static void printAllStackTraces() {
+        for (ThreadInfo info :
+                 ManagementFactory.getThreadMXBean()
+                 .dumpAllThreads(true, true))
+            System.err.print(info);
+    }
+
+    /**
+     * Checks that thread does not terminate within the default
+     * millisecond delay of {@code timeoutMillis()}.
      */
-    public void assertThreadJoinTimesOut(Thread thread, long timeoutMillis) {
+    void assertThreadStaysAlive(Thread thread) {
+        assertThreadStaysAlive(thread, timeoutMillis());
+    }
+
+    /**
+     * Checks that thread does not terminate within the given millisecond delay.
+     */
+    void assertThreadStaysAlive(Thread thread, long millis) {
         try {
-            long startTime = System.nanoTime();
-            thread.join(timeoutMillis);
+            // No need to optimize the failing case via Thread.join.
+            delay(millis);
             assertTrue(thread.isAlive());
-            assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
         } catch (InterruptedException ie) {
             fail("Unexpected InterruptedException");
         }
     }
 
     /**
+     * Checks that the threads do not terminate within the default
+     * millisecond delay of {@code timeoutMillis()}.
+     */
+    void assertThreadsStayAlive(Thread... threads) {
+        assertThreadsStayAlive(timeoutMillis(), threads);
+    }
+
+    /**
+     * Checks that the threads do not terminate within the given millisecond delay.
+     */
+    void assertThreadsStayAlive(long millis, Thread... threads) {
+        try {
+            // No need to optimize the failing case via Thread.join.
+            delay(millis);
+            for (Thread thread : threads)
+                assertTrue(thread.isAlive());
+        } catch (InterruptedException ie) {
+            fail("Unexpected InterruptedException");
+        }
+    }
+
+    /**
+     * Checks that future.get times out, with the default timeout of
+     * {@code timeoutMillis()}.
+     */
+    void assertFutureTimesOut(Future future) {
+        assertFutureTimesOut(future, timeoutMillis());
+    }
+
+    /**
+     * Checks that future.get times out, with the given millisecond timeout.
+     */
+    void assertFutureTimesOut(Future future, long timeoutMillis) {
+        long startTime = System.nanoTime();
+        try {
+            future.get(timeoutMillis, MILLISECONDS);
+            shouldThrow();
+        } catch (TimeoutException success) {
+        } catch (Exception e) {
+            threadUnexpectedException(e);
+        } finally { future.cancel(true); }
+        assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
+    }
+
+    /**
      * Fails with message "should throw exception".
      */
     public void shouldThrow() {
@@ -544,11 +707,26 @@ public class JSR166TestCase extends Test
         SecurityManager sm = System.getSecurityManager();
         if (sm == null) {
             r.run();
+        }
+        runWithSecurityManagerWithPermissions(r, permissions);
+    }
+
+    /**
+     * Runs Runnable r with a security policy that permits precisely
+     * the specified permissions.  If there is no current security
+     * manager, a temporary one is set for the duration of the
+     * Runnable.  We require that any security manager permit
+     * getPolicy/setPolicy.
+     */
+    public void runWithSecurityManagerWithPermissions(Runnable r,
+                                                      Permission... permissions) {
+        SecurityManager sm = System.getSecurityManager();
+        if (sm == null) {
             Policy savedPolicy = Policy.getPolicy();
             try {
                 Policy.setPolicy(permissivePolicy());
                 System.setSecurityManager(new SecurityManager());
-                runWithPermissions(r, permissions);
+                runWithSecurityManagerWithPermissions(r, permissions);
             } finally {
                 System.setSecurityManager(null);
                 Policy.setPolicy(savedPolicy);
@@ -596,6 +774,12 @@ public class JSR166TestCase extends Test
             return perms.implies(p);
         }
         public void refresh() {}
+        public String toString() {
+            List<Permission> ps = new ArrayList<Permission>();
+            for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
+                ps.add(e.nextElement());
+            return "AdjustablePolicy with permissions " + ps;
+        }
     }
 
     /**
@@ -633,22 +817,11 @@ public class JSR166TestCase extends Test
     }
 
     /**
-     * Sleeps until the timeout has elapsed, or interrupted.
-     * Does <em>NOT</em> throw InterruptedException.
-     */
-    void sleepTillInterrupted(long timeoutMillis) {
-        try {
-            Thread.sleep(timeoutMillis);
-        } catch (InterruptedException wakeup) {}
-    }
-
-    /**
-     * Waits up to the specified number of milliseconds for the given
+     * Spin-waits up to the specified number of milliseconds for the given
      * thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
      */
     void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
-        long timeoutNanos = timeoutMillis * 1000L * 1000L;
-        long t0 = System.nanoTime();
+        long startTime = System.nanoTime();
         for (;;) {
             Thread.State s = thread.getState();
             if (s == Thread.State.BLOCKED ||
@@ -657,7 +830,7 @@ public class JSR166TestCase extends Test
                 return;
             else if (s == Thread.State.TERMINATED)
                 fail("Unexpected thread termination");
-            else if (System.nanoTime() - t0 > timeoutNanos) {
+            else if (millisElapsedSince(startTime) > timeoutMillis) {
                 threadAssertTrue(thread.isAlive());
                 return;
             }
@@ -703,7 +876,7 @@ public class JSR166TestCase extends Test
         } catch (InterruptedException ie) {
             threadUnexpectedException(ie);
         } finally {
-            if (t.isAlive()) {
+            if (t.getState() != Thread.State.TERMINATED) {
                 t.interrupt();
                 fail("Test timed out");
             }
@@ -781,6 +954,7 @@ public class JSR166TestCase extends Test
                 realRun();
                 threadShouldThrow("InterruptedException");
             } catch (InterruptedException success) {
+                threadAssertFalse(Thread.interrupted());
             } catch (Throwable t) {
                 threadUnexpectedException(t);
             }
@@ -810,6 +984,7 @@ public class JSR166TestCase extends Test
                 threadShouldThrow("InterruptedException");
                 return result;
             } catch (InterruptedException success) {
+                threadAssertFalse(Thread.interrupted());
             } catch (Throwable t) {
                 threadUnexpectedException(t);
             }
@@ -844,10 +1019,45 @@ public class JSR166TestCase extends Test
     public Runnable awaiter(final CountDownLatch latch) {
         return new CheckedRunnable() {
             public void realRun() throws InterruptedException {
-                latch.await();
+                await(latch);
             }};
     }
 
+    public void await(CountDownLatch latch) {
+        try {
+            assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
+        } catch (Throwable t) {
+            threadUnexpectedException(t);
+        }
+    }
+
+    public void await(Semaphore semaphore) {
+        try {
+            assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
+        } catch (Throwable t) {
+            threadUnexpectedException(t);
+        }
+    }
+
+//     /**
+//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
+//      */
+//     public void await(AtomicBoolean flag) {
+//         await(flag, LONG_DELAY_MS);
+//     }
+
+//     /**
+//      * Spin-waits up to the specified timeout until flag becomes true.
+//      */
+//     public void await(AtomicBoolean flag, long timeoutMillis) {
+//         long startTime = System.nanoTime();
+//         while (!flag.get()) {
+//             if (millisElapsedSince(startTime) > timeoutMillis)
+//                 throw new AssertionFailedError("timed out");
+//             Thread.yield();
+//         }
+//     }
+
     public static class NPETask implements Callable<String> {
         public String call() { throw new NullPointerException(); }
     }
@@ -1050,15 +1260,17 @@ public class JSR166TestCase extends Test
     }
 
     /**
-     * A CyclicBarrier that fails with AssertionFailedErrors instead
-     * of throwing checked exceptions.
+     * A CyclicBarrier that uses timed await and fails with
+     * AssertionFailedErrors instead of throwing checked exceptions.
      */
     public class CheckedBarrier extends CyclicBarrier {
         public CheckedBarrier(int parties) { super(parties); }
 
         public int await() {
             try {
-                return super.await();
+                return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
+            } catch (TimeoutException e) {
+                throw new AssertionFailedError("timed out");
             } catch (Exception e) {
                 AssertionFailedError afe =
                     new AssertionFailedError("Unexpected exception: " + e);
@@ -1068,7 +1280,7 @@ public class JSR166TestCase extends Test
         }
     }
 
-    public void checkEmpty(BlockingQueue q) {
+    void checkEmpty(BlockingQueue q) {
         try {
             assertTrue(q.isEmpty());
             assertEquals(0, q.size());
@@ -1095,4 +1307,39 @@ public class JSR166TestCase extends Test
         }
     }
 
+    void assertSerialEquals(Object x, Object y) {
+        assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
+    }
+
+    void assertNotSerialEquals(Object x, Object y) {
+        assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
+    }
+
+    byte[] serialBytes(Object o) {
+        try {
+            ByteArrayOutputStream bos = new ByteArrayOutputStream();
+            ObjectOutputStream oos = new ObjectOutputStream(bos);
+            oos.writeObject(o);
+            oos.flush();
+            oos.close();
+            return bos.toByteArray();
+        } catch (Throwable t) {
+            threadUnexpectedException(t);
+            return new byte[0];
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    <T> T serialClone(T o) {
+        try {
+            ObjectInputStream ois = new ObjectInputStream
+                (new ByteArrayInputStream(serialBytes(o)));
+            T clone = (T) ois.readObject();
+            assertSame(o.getClass(), clone.getClass());
+            return clone;
+        } catch (Throwable t) {
+            threadUnexpectedException(t);
+            return null;
+        }
+    }
 }