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2.x: Add assertValueSetOnly and assertValueSequenceOnly to TestObserver + TestSubscriber #6010

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May 18, 2018
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2.x: Add assertValueSetOnly and assertValueSequenceOnly to TestObserver + TestSubscriber #6010

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474e6ab
2.x: Add assertValueSetOnly and assertValueSequenceOnly to TestObserv…
vanniktech May 17, 2018
bbe97c9
Experimental
vanniktech May 18, 2018
cd99d70
Lowercase
vanniktech May 18, 2018
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30 changes: 30 additions & 0 deletions src/main/java/io/reactivex/observers/BaseTestConsumer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -587,6 +587,21 @@ public final U assertValueSet(Collection<? extends T> expected) {
return (U)this;
}

/**
* Assert that the TestObserver/TestSubscriber received only the specified values in any order without terminating.
* @param expected the collection of values expected in any order
* @return this;
* @since 2.1.14 - experimental
*/
@SuppressWarnings("unchecked")
@Experimental
public final U assertValueSetOnly(Collection<? extends T> expected) {
return assertSubscribed()
.assertValueSet(expected)
.assertNoErrors()
.assertNotComplete();
}

/**
* Assert that the TestObserver/TestSubscriber received only the specified sequence of values in the same order.
* @param sequence the sequence of expected values in order
Expand Down Expand Up @@ -625,6 +640,21 @@ public final U assertValueSequence(Iterable<? extends T> sequence) {
return (U)this;
}

/**
* Assert that the TestObserver/TestSubscriber received only the specified values in the specified order without terminating.
* @param sequence the sequence of expected values in order
* @return this;
* @since 2.1.14 - experimental
*/
@SuppressWarnings("unchecked")
@Experimental
public final U assertValueSequenceOnly(Iterable<? extends T> sequence) {
return assertSubscribed()
.assertValueSequence(sequence)
.assertNoErrors()
.assertNotComplete();
}

/**
* Assert that the TestObserver/TestSubscriber terminated (i.e., the terminal latch reached zero).
* @return this;
Expand Down
132 changes: 128 additions & 4 deletions src/test/java/io/reactivex/observers/TestObserverTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1434,7 +1434,7 @@ public void withTag() {
.assertResult(1)
;
}
fail("Should have thrown!");
throw new RuntimeException("Should have thrown!");
} catch (AssertionError ex) {
assertTrue(ex.toString(), ex.toString().contains("testing with item=2"));
}
Expand Down Expand Up @@ -1466,7 +1466,7 @@ public void assertValuesOnlyThrowsOnUnexpectedValue() {

try {
to.assertValuesOnly(5);
fail();
throw new RuntimeException();
} catch (AssertionError ex) {
// expected
}
Expand All @@ -1481,7 +1481,7 @@ public void assertValuesOnlyThrowsWhenCompleted() {

try {
to.assertValuesOnly();
fail();
throw new RuntimeException();
} catch (AssertionError ex) {
// expected
}
Expand All @@ -1496,7 +1496,131 @@ public void assertValuesOnlyThrowsWhenErrored() {

try {
to.assertValuesOnly();
fail();
throw new RuntimeException();
} catch (AssertionError ex) {
// expected
}
}

@Test
public void assertValueSetOnly() {
TestObserver<Integer> to = TestObserver.create();
to.onSubscribe(Disposables.empty());
to.assertValueSetOnly(Collections.<Integer>emptySet());

to.onNext(5);
to.assertValueSetOnly(Collections.singleton(5));

to.onNext(-1);
to.assertValueSetOnly(new HashSet<Integer>(Arrays.asList(5, -1)));
}

@Test
public void assertValueSetOnlyThrowsOnUnexpectedValue() {
TestObserver<Integer> to = TestObserver.create();
to.onSubscribe(Disposables.empty());
to.assertValueSetOnly(Collections.<Integer>emptySet());

to.onNext(5);
to.assertValueSetOnly(Collections.singleton(5));

to.onNext(-1);

try {
to.assertValueSetOnly(Collections.singleton(5));
throw new RuntimeException();
} catch (AssertionError ex) {
// expected
}
}

@Test
public void assertValueSetOnlyThrowsWhenCompleted() {
TestObserver<Integer> to = TestObserver.create();
to.onSubscribe(Disposables.empty());

to.onComplete();

try {
to.assertValueSetOnly(Collections.<Integer>emptySet());
throw new RuntimeException();
} catch (AssertionError ex) {
// expected
}
}

@Test
public void assertValueSetOnlyThrowsWhenErrored() {
TestObserver<Integer> to = TestObserver.create();
to.onSubscribe(Disposables.empty());

to.onError(new TestException());

try {
to.assertValueSetOnly(Collections.<Integer>emptySet());
throw new RuntimeException();
} catch (AssertionError ex) {
// expected
}
}

@Test
public void assertValueSequenceOnly() {
TestObserver<Integer> to = TestObserver.create();
to.onSubscribe(Disposables.empty());
to.assertValueSequenceOnly(Collections.<Integer>emptyList());

to.onNext(5);
to.assertValueSequenceOnly(Collections.singletonList(5));

to.onNext(-1);
to.assertValueSequenceOnly(Arrays.asList(5, -1));
}

@Test
public void assertValueSequenceOnlyThrowsOnUnexpectedValue() {
TestObserver<Integer> to = TestObserver.create();
to.onSubscribe(Disposables.empty());
to.assertValueSequenceOnly(Collections.<Integer>emptyList());

to.onNext(5);
to.assertValueSequenceOnly(Collections.singletonList(5));

to.onNext(-1);

try {
to.assertValueSequenceOnly(Collections.singletonList(5));
throw new RuntimeException();
} catch (AssertionError ex) {
// expected
}
}

@Test
public void assertValueSequenceOnlyThrowsWhenCompleted() {
TestObserver<Integer> to = TestObserver.create();
to.onSubscribe(Disposables.empty());

to.onComplete();

try {
to.assertValueSequenceOnly(Collections.<Integer>emptyList());
throw new RuntimeException();
} catch (AssertionError ex) {
// expected
}
}

@Test
public void assertValueSequenceOnlyThrowsWhenErrored() {
TestObserver<Integer> to = TestObserver.create();
to.onSubscribe(Disposables.empty());

to.onError(new TestException());

try {
to.assertValueSequenceOnly(Collections.<Integer>emptyList());
throw new RuntimeException();
} catch (AssertionError ex) {
// expected
}
Expand Down
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