/** Timed offer reports drops if saturated */
public void testDroppedTimedOffer() {
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>(basicExecutor, 4);
TestSubscriber s1 = new TestSubscriber();
s1.request = false;
TestSubscriber s2 = new TestSubscriber();
s2.request = false;
p.subscribe(s1);
p.subscribe(s2);
s2.awaitSubscribe();
s1.awaitSubscribe();
long delay = timeoutMillis();
for (int i = 1; i <= 4; ++i) assertTrue(p.offer(i, delay, MILLISECONDS, null) >= 0);
long startTime = System.nanoTime();
assertTrue(p.offer(5, delay, MILLISECONDS, null) < 0);
s1.sn.request(64);
assertTrue(p.offer(6, delay, MILLISECONDS, null) < 0);
// 2 * delay should elapse but check only 1 * delay to allow timer slop
assertTrue(millisElapsedSince(startTime) >= delay);
s2.sn.request(64);
p.close();
s2.awaitComplete();
assertTrue(s2.nexts >= 2);
s1.awaitComplete();
assertTrue(s1.nexts >= 2);
}
/** Timed offer invokes drop handler if saturated */
public void testHandledDroppedTimedOffer() {
AtomicInteger calls = new AtomicInteger();
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>(basicExecutor, 4);
TestSubscriber s1 = new TestSubscriber();
s1.request = false;
TestSubscriber s2 = new TestSubscriber();
s2.request = false;
p.subscribe(s1);
p.subscribe(s2);
s2.awaitSubscribe();
s1.awaitSubscribe();
long delay = timeoutMillis();
for (int i = 1; i <= 4; ++i)
assertTrue(p.offer(i, delay, MILLISECONDS, (s, x) -> noopHandle(calls)) >= 0);
long startTime = System.nanoTime();
assertTrue(p.offer(5, delay, MILLISECONDS, (s, x) -> noopHandle(calls)) < 0);
s1.sn.request(64);
assertTrue(p.offer(6, delay, MILLISECONDS, (s, x) -> noopHandle(calls)) < 0);
assertTrue(millisElapsedSince(startTime) >= delay);
s2.sn.request(64);
p.close();
s2.awaitComplete();
s1.awaitComplete();
assertTrue(calls.get() >= 2);
}
/** Timed offer with null item or TimeUnit throws NPE */
public void testNullTimedOffer() {
SubmissionPublisher<Integer> p = basicPublisher();
long startTime = System.nanoTime();
try {
p.offer(null, LONG_DELAY_MS, MILLISECONDS, null);
shouldThrow();
} catch (NullPointerException success) {
}
try {
p.offer(1, LONG_DELAY_MS, null, null);
shouldThrow();
} catch (NullPointerException success) {
}
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
}
/** Timed offer succeeds if drop handler forces request */
public void testRecoveredHandledDroppedTimedOffer() {
AtomicInteger calls = new AtomicInteger();
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>(basicExecutor, 4);
TestSubscriber s1 = new TestSubscriber();
s1.request = false;
TestSubscriber s2 = new TestSubscriber();
s2.request = false;
p.subscribe(s1);
p.subscribe(s2);
s2.awaitSubscribe();
s1.awaitSubscribe();
int n = 0;
long delay = timeoutMillis();
long startTime = System.nanoTime();
for (int i = 1; i <= 6; ++i) {
int d = p.offer(i, delay, MILLISECONDS, (s, x) -> reqHandle(calls, s));
n = n + 2 + (d < 0 ? d : 0);
}
assertTrue(millisElapsedSince(startTime) >= delay);
p.close();
s2.awaitComplete();
s1.awaitComplete();
assertEquals(n, s1.nexts + s2.nexts);
assertTrue(calls.get() >= 2);
}
/** offer(null) throws NPE */
public void testNullOffer() {
SubmissionPublisher<Integer> p = basicPublisher();
try {
p.offer(null, null);
shouldThrow();
} catch (NullPointerException success) {
}
}
/** offer invokes drop handler if saturated */
public void testHandledDroppedOffer() {
AtomicInteger calls = new AtomicInteger();
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>(basicExecutor, 4);
TestSubscriber s1 = new TestSubscriber();
s1.request = false;
TestSubscriber s2 = new TestSubscriber();
s2.request = false;
p.subscribe(s1);
p.subscribe(s2);
s2.awaitSubscribe();
s1.awaitSubscribe();
for (int i = 1; i <= 4; ++i) assertTrue(p.offer(i, (s, x) -> noopHandle(calls)) >= 0);
p.offer(4, (s, x) -> noopHandle(calls));
assertTrue(p.offer(6, (s, x) -> noopHandle(calls)) < 0);
s1.sn.request(64);
assertTrue(p.offer(7, (s, x) -> noopHandle(calls)) < 0);
s2.sn.request(64);
p.close();
s2.awaitComplete();
s1.awaitComplete();
assertTrue(calls.get() >= 4);
}
/** offer reports drops if saturated */
public void testDroppedOffer() {
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>(basicExecutor, 4);
TestSubscriber s1 = new TestSubscriber();
s1.request = false;
TestSubscriber s2 = new TestSubscriber();
s2.request = false;
p.subscribe(s1);
p.subscribe(s2);
s2.awaitSubscribe();
s1.awaitSubscribe();
for (int i = 1; i <= 4; ++i) assertTrue(p.offer(i, null) >= 0);
p.offer(5, null);
assertTrue(p.offer(6, null) < 0);
s1.sn.request(64);
assertTrue(p.offer(7, null) < 0);
s2.sn.request(64);
p.close();
s2.awaitComplete();
assertTrue(s2.nexts >= 4);
s1.awaitComplete();
assertTrue(s1.nexts >= 4);
}
/** offer returns number of lagged items if not saturated */
public void testLaggedOffer() {
SubmissionPublisher<Integer> p = basicPublisher();
TestSubscriber s1 = new TestSubscriber();
s1.request = false;
TestSubscriber s2 = new TestSubscriber();
s2.request = false;
p.subscribe(s1);
p.subscribe(s2);
s2.awaitSubscribe();
s1.awaitSubscribe();
assertTrue(p.offer(1, null) >= 1);
assertTrue(p.offer(2, null) >= 2);
s1.sn.request(4);
assertTrue(p.offer(3, null) >= 3);
s2.sn.request(4);
p.offer(4, null);
p.close();
s2.awaitComplete();
assertEquals(4, s2.nexts);
s1.awaitComplete();
assertEquals(4, s2.nexts);
}
/** Timed offer returns number of lagged items if not saturated */
public void testLaggedTimedOffer() {
SubmissionPublisher<Integer> p = basicPublisher();
TestSubscriber s1 = new TestSubscriber();
s1.request = false;
TestSubscriber s2 = new TestSubscriber();
s2.request = false;
p.subscribe(s1);
p.subscribe(s2);
s2.awaitSubscribe();
s1.awaitSubscribe();
long startTime = System.nanoTime();
assertTrue(p.offer(1, LONG_DELAY_MS, MILLISECONDS, null) >= 1);
assertTrue(p.offer(2, LONG_DELAY_MS, MILLISECONDS, null) >= 2);
s1.sn.request(4);
assertTrue(p.offer(3, LONG_DELAY_MS, MILLISECONDS, null) >= 3);
s2.sn.request(4);
p.offer(4, LONG_DELAY_MS, MILLISECONDS, null);
p.close();
s2.awaitComplete();
assertEquals(4, s2.nexts);
s1.awaitComplete();
assertEquals(4, s2.nexts);
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
}
/** offer succeeds if drop handler forces request */
public void testRecoveredHandledDroppedOffer() {
AtomicInteger calls = new AtomicInteger();
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>(basicExecutor, 4);
TestSubscriber s1 = new TestSubscriber();
s1.request = false;
TestSubscriber s2 = new TestSubscriber();
s2.request = false;
p.subscribe(s1);
p.subscribe(s2);
s2.awaitSubscribe();
s1.awaitSubscribe();
int n = 0;
for (int i = 1; i <= 8; ++i) {
int d = p.offer(i, (s, x) -> reqHandle(calls, s));
n = n + 2 + (d < 0 ? d : 0);
}
p.close();
s2.awaitComplete();
s1.awaitComplete();
assertEquals(n, s1.nexts + s2.nexts);
assertTrue(calls.get() >= 2);
}
/** Timed offer to a publisher with no subscribers returns lag 0 */
public void testEmptyTimedOffer() {
SubmissionPublisher<Integer> p = basicPublisher();
long startTime = System.nanoTime();
assertEquals(0, p.offer(1, LONG_DELAY_MS, MILLISECONDS, null));
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
}
/** offer to a publisher with no subscribers returns lag 0 */
public void testEmptyOffer() {
SubmissionPublisher<Integer> p = basicPublisher();
assertEquals(0, p.offer(1, null));
}
