/**
* Upon subscription, the subscriber's onSubscribe is called, no other Subscriber methods are
* invoked, the publisher hasSubscribers, isSubscribed is true, and existing subscriptions are
* unaffected.
*/
public void testSubscribe1() {
TestSubscriber s = new TestSubscriber();
SubmissionPublisher<Integer> p = basicPublisher();
p.subscribe(s);
assertTrue(p.hasSubscribers());
assertEquals(1, p.getNumberOfSubscribers());
assertTrue(p.getSubscribers().contains(s));
assertTrue(p.isSubscribed(s));
s.awaitSubscribe();
assertNotNull(s.sn);
assertEquals(0, s.nexts);
assertEquals(0, s.errors);
assertEquals(0, s.completes);
TestSubscriber s2 = new TestSubscriber();
p.subscribe(s2);
assertTrue(p.hasSubscribers());
assertEquals(2, p.getNumberOfSubscribers());
assertTrue(p.getSubscribers().contains(s));
assertTrue(p.getSubscribers().contains(s2));
assertTrue(p.isSubscribed(s));
assertTrue(p.isSubscribed(s2));
s2.awaitSubscribe();
assertNotNull(s2.sn);
assertEquals(0, s2.nexts);
assertEquals(0, s2.errors);
assertEquals(0, s2.completes);
p.close();
}
/**
* A new SubmissionPublisher has no subscribers, a non-null executor, a power-of-two capacity, is
* not closed, and reports zero demand and lag
*/
void checkInitialState(SubmissionPublisher<?> p) {
assertFalse(p.hasSubscribers());
assertEquals(0, p.getNumberOfSubscribers());
assertTrue(p.getSubscribers().isEmpty());
assertFalse(p.isClosed());
assertNull(p.getClosedException());
int n = p.getMaxBufferCapacity();
assertTrue((n & (n - 1)) == 0); // power of two
assertNotNull(p.getExecutor());
assertEquals(0, p.estimateMinimumDemand());
assertEquals(0, p.estimateMaximumLag());
}