/**
* Run the command via {@link com.netflix.hystrix.HystrixCommand#observe()}, let the {@link
* rx.Observable} terminal states unblock a {@link java.util.concurrent.CountDownLatch} and then
* assert
*
* @param command command to run
* @param assertion assertions to check
* @param isSuccess should the command succeed?
*/
protected void assertNonBlockingObserve(C command, Action1<C> assertion, boolean isSuccess) {
System.out.println(
"Running command.observe(), awaiting terminal state of Observable, then running assertions...");
final CountDownLatch latch = new CountDownLatch(1);
Observable<Integer> o = command.observe();
o.subscribe(
new Subscriber<Integer>() {
@Override
public void onCompleted() {
latch.countDown();
}
@Override
public void onError(Throwable e) {
latch.countDown();
}
@Override
public void onNext(Integer i) {
// do nothing
}
});
try {
latch.await(3, TimeUnit.SECONDS);
assertion.call(command);
} catch (Exception e) {
throw new RuntimeException(e);
}
if (isSuccess) {
try {
o.toList().toBlocking().single();
} catch (Exception ex) {
throw new RuntimeException(ex);
}
} else {
try {
o.toList().toBlocking().single();
fail("Expected a command failure!");
} catch (Exception ex) {
System.out.println("Received expected ex : " + ex);
ex.printStackTrace();
}
}
}
@Override
public Observable<List<CachedValuesHistogram>> call(
Observable<CachedValuesHistogram> windowOf2) {
return windowOf2.toList();
}