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import java.util.Spliterator; |
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import java.util.concurrent.BlockingDeque; |
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import java.util.concurrent.BlockingQueue; |
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import java.util.concurrent.ConcurrentLinkedQueue; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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ArrayList iteratedForEachRemaining = new ArrayList(); |
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ArrayList tryAdvanced = new ArrayList(); |
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ArrayList spliterated = new ArrayList(); |
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ArrayList splitonced = new ArrayList(); |
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ArrayList forEached = new ArrayList(); |
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ArrayList streamForEached = new ArrayList(); |
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ConcurrentLinkedQueue parallelStreamForEached = new ConcurrentLinkedQueue(); |
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ArrayList removeIfed = new ArrayList(); |
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for (Object x : c) iterated.add(x); |
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c.iterator().forEachRemaining(iteratedForEachRemaining::add); |
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for (Spliterator s = c.spliterator(); |
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s.tryAdvance(tryAdvanced::add); ) {} |
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c.spliterator().forEachRemaining(spliterated::add); |
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{ // trySplit returns "strict prefix" |
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Spliterator s1 = c.spliterator(), s2 = s1.trySplit(); |
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if (s2 != null) s2.forEachRemaining(splitonced::add); |
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s1.forEachRemaining(splitonced::add); |
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} |
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c.forEach(forEached::add); |
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c.stream().forEach(streamForEached::add); |
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c.parallelStream().forEach(parallelStreamForEached::add); |
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c.removeIf(e -> { removeIfed.add(e); return false; }); |
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boolean ordered = |
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c.spliterator().hasCharacteristics(Spliterator.ORDERED); |
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if (c instanceof List || c instanceof Deque) |
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assertTrue(ordered); |
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HashSet cset = new HashSet(c); |
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assertEquals(cset, new HashSet(parallelStreamForEached)); |
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if (ordered) { |
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assertEquals(iterated, iteratedForEachRemaining); |
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assertEquals(iterated, tryAdvanced); |
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assertEquals(iterated, spliterated); |
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assertEquals(iterated, splitonced); |
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assertEquals(iterated, forEached); |
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assertEquals(iterated, streamForEached); |
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assertEquals(iterated, removeIfed); |
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} else { |
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HashSet cset = new HashSet(c); |
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assertEquals(cset, new HashSet(iterated)); |
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assertEquals(cset, new HashSet(iteratedForEachRemaining)); |
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assertEquals(cset, new HashSet(tryAdvanced)); |
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assertEquals(cset, new HashSet(spliterated)); |
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assertEquals(cset, new HashSet(splitonced)); |
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assertEquals(cset, new HashSet(forEached)); |
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assertEquals(cset, new HashSet(streamForEached)); |
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assertEquals(cset, new HashSet(removeIfed)); |
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} |
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if (c instanceof Deque) { |
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if (!impl.isConcurrent()) return; |
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final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
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final Collection c = impl.emptyCollection(); |
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< |
final long testDurationMillis = timeoutMillis(); |
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final long testDurationMillis |
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= expensiveTests ? LONG_DELAY_MS : timeoutMillis(); |
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final AtomicBoolean done = new AtomicBoolean(false); |
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final Object one = impl.makeElement(1); |
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final Object two = impl.makeElement(2); |
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final Consumer checkSanity = x -> assertTrue(x == one || x == two); |
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final Consumer<Object[]> checkArraySanity = array -> { |
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assertTrue(array.length <= 2); |
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for (Object x : array) assertTrue(x == one || x == two); |
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}; |
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final Object[] emptyArray = |
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(Object[]) java.lang.reflect.Array.newInstance(one.getClass(), 0); |
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final List<Future<?>> futures; |
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final Phaser threadsStarted = new Phaser(1); // register this thread |
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final Runnable[] frobbers = { |
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() -> c.forEach(x -> assertTrue(x == one || x == two)), |
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() -> c.stream().forEach(x -> assertTrue(x == one || x == two)), |
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> |
() -> c.forEach(checkSanity), |
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> |
() -> c.stream().forEach(checkSanity), |
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> |
() -> c.parallelStream().forEach(checkSanity), |
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() -> c.spliterator().trySplit(), |
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() -> { |
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Spliterator s = c.spliterator(); |
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s.tryAdvance(x -> assertTrue(x == one || x == two)); |
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s.tryAdvance(checkSanity); |
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s.trySplit(); |
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}, |
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() -> { |
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Spliterator s = c.spliterator(); |
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< |
do {} while (s.tryAdvance(x -> assertTrue(x == one || x == two))); |
564 |
< |
}, |
565 |
< |
() -> { |
566 |
< |
for (Object x : c) assertTrue(x == one || x == two); |
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< |
}, |
568 |
< |
() -> { |
569 |
< |
for (Object x : c.toArray()) assertTrue(x == one || x == two); |
570 |
< |
}, |
571 |
< |
() -> { |
572 |
< |
for (Object x : c.toArray(emptyArray)) assertTrue(x == one || x == two); |
586 |
> |
do {} while (s.tryAdvance(checkSanity)); |
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}, |
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+ |
() -> { for (Object x : c) checkSanity.accept(x); }, |
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() -> checkArraySanity.accept(c.toArray()), |
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+ |
() -> checkArraySanity.accept(c.toArray(emptyArray)), |
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() -> { |
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assertTrue(c.add(one)); |
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assertTrue(c.contains(one)); |
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assertNull(future.get(0L, MILLISECONDS)); |
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} |
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|
626 |
+ |
/** |
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+ |
* Spliterators are either IMMUTABLE or truly late-binding or, if |
628 |
+ |
* concurrent, use the same "late-binding style" of returning |
629 |
+ |
* elements added between creation and first use. |
630 |
+ |
*/ |
631 |
+ |
public void testLateBindingStyle() { |
632 |
+ |
if (!testImplementationDetails) return; |
633 |
+ |
if (impl.klazz() == ArrayList.class) return; // for jdk8 |
634 |
+ |
// Immutable (snapshot) spliterators are exempt |
635 |
+ |
if (impl.emptyCollection().spliterator() |
636 |
+ |
.hasCharacteristics(Spliterator.IMMUTABLE)) |
637 |
+ |
return; |
638 |
+ |
final Object one = impl.makeElement(1); |
639 |
+ |
{ |
640 |
+ |
final Collection c = impl.emptyCollection(); |
641 |
+ |
final Spliterator split = c.spliterator(); |
642 |
+ |
c.add(one); |
643 |
+ |
assertTrue(split.tryAdvance(e -> { assertSame(e, one); })); |
644 |
+ |
assertFalse(split.tryAdvance(e -> { throw new AssertionError(); })); |
645 |
+ |
assertTrue(c.contains(one)); |
646 |
+ |
} |
647 |
+ |
{ |
648 |
+ |
final AtomicLong count = new AtomicLong(0); |
649 |
+ |
final Collection c = impl.emptyCollection(); |
650 |
+ |
final Spliterator split = c.spliterator(); |
651 |
+ |
c.add(one); |
652 |
+ |
split.forEachRemaining( |
653 |
+ |
e -> { assertSame(e, one); count.getAndIncrement(); }); |
654 |
+ |
assertEquals(1L, count.get()); |
655 |
+ |
assertFalse(split.tryAdvance(e -> { throw new AssertionError(); })); |
656 |
+ |
assertTrue(c.contains(one)); |
657 |
+ |
} |
658 |
+ |
} |
659 |
+ |
|
660 |
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// public void testCollection8DebugFail() { |
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// fail(impl.klazz().getSimpleName()); |
662 |
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// } |