public void testNonStopTimer() throws Exception {
long startTime = System.nanoTime();
int loopTmes = 4;
long timeout = 500;
for (int i = 0; i < loopTmes; i++) {
System.out.println("executing loop count" + i);
nonStopManager.begin(timeout);
try {
blockUntilAborted();
} finally {
Assert.assertTrue(abortableOperationManager.isAborted());
Thread.currentThread().interrupt();
nonStopManager.finish();
// check that aborted status is cleared.
Assert.assertFalse(abortableOperationManager.isAborted());
// check that interrupted flag is cleared.
Assert.assertFalse(Thread.interrupted());
}
}
long timeTaken = System.nanoTime() - startTime;
System.out.println("time taken to execute operations " + timeTaken);
Assert.assertTrue(
(timeTaken >= loopTmes * TimeUnit.MILLISECONDS.toNanos(timeout)
&& timeTaken
< (loopTmes * TimeUnit.MILLISECONDS.toNanos(timeout)
+ TimeUnit.SECONDS.toNanos(2))));
}
public void testNonStopManagerLeakTest() throws Throwable {
List<WeakReference> weakReferences = new ArrayList<WeakReference>();
for (int i = 0; i < 100; i++) {
nonStopManager.begin(TimeUnit.MINUTES.toMillis(10));
try {
Collection<NonStopTaskWrapper> collection = nonStopManager.getTimerTasks().values();
Assert.assertEquals(1, collection.size());
NonStopTaskWrapper o = collection.iterator().next();
weakReferences.add(new WeakReference(o.getFuture()));
} finally {
nonStopManager.finish();
}
}
{
Collection collection = nonStopManager.getTimerTasks().values();
Assert.assertEquals(0, collection.size());
}
int gcRefCount = 0;
for (long time = System.currentTimeMillis() + TimeUnit.MINUTES.toMillis(2);
System.currentTimeMillis() < time; ) {
gcRefCount = 0;
System.err.println("Looping for GC");
for (int i = 0; i < 10; i++) {
System.gc();
}
for (WeakReference ref : weakReferences) {
if (ref.get() == null) {
gcRefCount++;
}
}
if (gcRefCount > 95) {
break;
}
Thread.sleep(500);
}
System.err.println("Test passed");
Assert.assertTrue(gcRefCount > 95);
}
public void testIllegalStates() throws Throwable {
// finish without begin
try {
nonStopManager.finish();
throw new AssertionError();
} catch (IllegalStateException e) {
// expected
}
// multiple begin
nonStopManager.begin(10000);
try {
nonStopManager.begin(1000);
throw new AssertionError();
} catch (IllegalStateException e) {
// expected
} finally {
nonStopManager.finish();
}
// multiple finish
nonStopManager.begin(10000);
nonStopManager.finish();
try {
nonStopManager.finish();
throw new AssertionError();
} catch (IllegalStateException e) {
// expected
}
}
public void testBoundaryTimeouts() {
// test min value.
nonStopManager.begin(Long.MIN_VALUE);
nonStopManager.finish();
// test negative value
nonStopManager.begin(-1);
nonStopManager.finish();
// test zero
nonStopManager.begin(0);
nonStopManager.finish();
// test max value
nonStopManager.begin(Long.MAX_VALUE);
nonStopManager.finish();
}
public void testTryBegin() throws Throwable {
Assert.assertTrue(nonStopManager.tryBegin(10000));
Assert.assertFalse(nonStopManager.tryBegin(10000));
nonStopManager.finish();
nonStopManager.begin(10000);
Assert.assertFalse(nonStopManager.tryBegin(10000));
nonStopManager.finish();
Assert.assertTrue(nonStopManager.tryBegin(10000));
try {
nonStopManager.begin(-1);
throw new AssertionError();
} catch (IllegalStateException e) {
// expected
} finally {
nonStopManager.finish();
}
}