@Test
public void normal() {
AssertSubscriber<Integer> ts = AssertSubscriber.create();
Flux.range(1, 10).filter(v -> v % 2 == 0).subscribe(ts);
ts.assertValues(2, 4, 6, 8, 10).assertComplete().assertNoError();
}
@Test
public void supplierReturnsNull() {
AssertSubscriber<Integer> ts = AssertSubscriber.create();
Flux.range(1, 10).<Integer>reduceWith(() -> null, (a, b) -> b).subscribe(ts);
ts.assertNoValues().assertNotComplete().assertError(NullPointerException.class);
}
@Test
public void normal() {
AssertSubscriber<Integer> ts = AssertSubscriber.create();
Flux.range(1, 10).reduceWith(() -> 0, (a, b) -> b).subscribe(ts);
ts.assertValues(10).assertComplete().assertNoError();
}
@Test
public void syncFusion() {
AssertSubscriber<Object> ts = AssertSubscriber.create();
Flux.range(1, 10).filter(v -> (v & 1) == 0).subscribe(ts);
ts.assertValues(2, 4, 6, 8, 10).assertNoError().assertComplete();
}
@Test
public void normalBackpressuredArray() {
AssertSubscriber<Integer> ts = AssertSubscriber.create(2);
Flux.just(1, 2, 3, 4, 5, 6, 7, 8, 9, 10).filter(v -> v % 2 == 0).subscribe(ts);
ts.assertValues(2, 4).assertNotComplete().assertNoError();
ts.request(10);
ts.assertValues(2, 4, 6, 8, 10).assertComplete().assertNoError();
}
@Test
public void predicateThrows() {
AssertSubscriber<Integer> ts = AssertSubscriber.create(2);
Flux.range(1, 10)
.filter(
v -> {
throw new RuntimeException("forced failure");
})
.subscribe(ts);
ts.assertNoValues()
.assertNotComplete()
.assertError(RuntimeException.class)
.assertErrorMessage("forced failure");
}
@Test
public void accumulatorThrows() {
AssertSubscriber<Integer> ts = AssertSubscriber.create();
Flux.range(1, 10)
.reduceWith(
() -> 0,
(a, b) -> {
throw new RuntimeException("forced failure");
})
.subscribe(ts);
ts.assertNoValues()
.assertNotComplete()
.assertError(RuntimeException.class)
.assertErrorWith(e -> Assert.assertTrue(e.getMessage().contains("forced failure")));
}
@Test
public void asyncFusionBackpressured2() {
AssertSubscriber<Object> ts = AssertSubscriber.create(1);
UnicastProcessor<Integer> up = UnicastProcessor.create(new ConcurrentLinkedQueue<>());
Flux.just(1).hide().flatMap(w -> up.filter(v -> (v & 1) == 0), false, 1, 1).subscribe(ts);
up.onNext(1);
up.onNext(2);
ts.assertValues(2).assertNoError().assertNotComplete();
up.onComplete();
ts.assertValues(2).assertNoError().assertComplete();
}
@Test(expected = NullPointerException.class)
public void predicateNull() {
Flux.never().filter(null);
}
