@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 normalBackpressured() {
AssertSubscriber<Integer> ts = AssertSubscriber.create(0);
Flux.range(1, 10).reduceWith(() -> 0, (a, b) -> b).subscribe(ts);
ts.assertNoValues().assertNoError().assertNotComplete();
ts.request(2);
ts.assertValues(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")));
}
