19 |
|
import java.util.List; |
20 |
|
import java.util.NoSuchElementException; |
21 |
|
import java.util.Queue; |
22 |
+ |
import java.util.Set; |
23 |
|
import java.util.Spliterator; |
24 |
|
import java.util.concurrent.BlockingDeque; |
25 |
|
import java.util.concurrent.BlockingQueue; |
60 |
|
|
61 |
|
Object bomb() { |
62 |
|
return new Object() { |
63 |
< |
public boolean equals(Object x) { throw new AssertionError(); } |
64 |
< |
public int hashCode() { throw new AssertionError(); } |
65 |
< |
}; |
63 |
> |
@Override public boolean equals(Object x) { throw new AssertionError(); } |
64 |
> |
@Override public int hashCode() { throw new AssertionError(); } |
65 |
> |
@Override public String toString() { throw new AssertionError(); } |
66 |
> |
}; |
67 |
|
} |
68 |
|
|
69 |
|
/** Checks properties of empty collections. */ |
94 |
|
assertTrue(c.isEmpty()); |
95 |
|
assertEquals(0, c.size()); |
96 |
|
assertEquals("[]", c.toString()); |
97 |
+ |
if (c instanceof List<?>) { |
98 |
+ |
List x = (List) c; |
99 |
+ |
assertEquals(1, x.hashCode()); |
100 |
+ |
assertEquals(x, Collections.emptyList()); |
101 |
+ |
assertEquals(Collections.emptyList(), x); |
102 |
+ |
assertEquals(-1, x.indexOf(impl.makeElement(86))); |
103 |
+ |
assertEquals(-1, x.lastIndexOf(impl.makeElement(99))); |
104 |
+ |
} |
105 |
+ |
else if (c instanceof Set<?>) { |
106 |
+ |
assertEquals(0, c.hashCode()); |
107 |
+ |
assertEquals(c, Collections.emptySet()); |
108 |
+ |
assertEquals(Collections.emptySet(), c); |
109 |
+ |
} |
110 |
|
{ |
111 |
|
Object[] a = c.toArray(); |
112 |
|
assertEquals(0, a.length); |
155 |
|
} |
156 |
|
if (c instanceof BlockingQueue) { |
157 |
|
BlockingQueue q = (BlockingQueue) c; |
158 |
< |
assertNull(q.poll(0L, MILLISECONDS)); |
158 |
> |
assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit())); |
159 |
|
} |
160 |
|
if (c instanceof BlockingDeque) { |
161 |
|
BlockingDeque q = (BlockingDeque) c; |
162 |
< |
assertNull(q.pollFirst(0L, MILLISECONDS)); |
163 |
< |
assertNull(q.pollLast(0L, MILLISECONDS)); |
162 |
> |
assertNull(q.pollFirst(randomExpiredTimeout(), randomTimeUnit())); |
163 |
> |
assertNull(q.pollLast(randomExpiredTimeout(), randomTimeUnit())); |
164 |
|
} |
165 |
|
} |
166 |
|
|
267 |
|
() -> d.pop(), |
268 |
|
() -> d.descendingIterator().next()); |
269 |
|
} |
270 |
+ |
if (c instanceof List) { |
271 |
+ |
List x = (List) c; |
272 |
+ |
assertThrows( |
273 |
+ |
NoSuchElementException.class, |
274 |
+ |
() -> x.iterator().next(), |
275 |
+ |
() -> x.listIterator().next(), |
276 |
+ |
() -> x.listIterator(0).next(), |
277 |
+ |
() -> x.listIterator().previous(), |
278 |
+ |
() -> x.listIterator(0).previous()); |
279 |
+ |
} |
280 |
|
} |
281 |
|
|
282 |
|
public void testRemoveIf() { |
566 |
|
} catch (ConcurrentModificationException ex) { |
567 |
|
r1 = ConcurrentModificationException.class; |
568 |
|
assertFalse(impl.isConcurrent()); |
544 |
– |
} catch (UnsupportedOperationException ex) { |
545 |
– |
r1 = UnsupportedOperationException.class; |
569 |
|
} |
570 |
|
try { |
571 |
|
it2.forEachRemaining(iteratedForEachRemaining::add); |
572 |
|
r2 = iteratedForEachRemaining; |
573 |
|
} catch (ConcurrentModificationException ex) { |
574 |
|
r2 = ConcurrentModificationException.class; |
575 |
< |
} catch (UnsupportedOperationException ex) { |
553 |
< |
r2 = UnsupportedOperationException.class; |
575 |
> |
assertFalse(impl.isConcurrent()); |
576 |
|
} |
555 |
– |
if (!r1.equals(r2)) System.err.println(impl.klazz()); |
577 |
|
assertEquals(r1, r2); |
578 |
|
} |
579 |
|
|
752 |
|
} |
753 |
|
|
754 |
|
/** |
755 |
+ |
* Concurrent Spliterators, once exhausted, stay exhausted. |
756 |
+ |
*/ |
757 |
+ |
public void testStickySpliteratorExhaustion() throws Throwable { |
758 |
+ |
if (!impl.isConcurrent()) return; |
759 |
+ |
if (!testImplementationDetails) return; |
760 |
+ |
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
761 |
+ |
final Consumer alwaysThrows = e -> { throw new AssertionError(); }; |
762 |
+ |
final Collection c = impl.emptyCollection(); |
763 |
+ |
final Spliterator s = c.spliterator(); |
764 |
+ |
if (rnd.nextBoolean()) { |
765 |
+ |
assertFalse(s.tryAdvance(alwaysThrows)); |
766 |
+ |
} else { |
767 |
+ |
s.forEachRemaining(alwaysThrows); |
768 |
+ |
} |
769 |
+ |
final Object one = impl.makeElement(1); |
770 |
+ |
// Spliterator should not notice added element |
771 |
+ |
c.add(one); |
772 |
+ |
if (rnd.nextBoolean()) { |
773 |
+ |
assertFalse(s.tryAdvance(alwaysThrows)); |
774 |
+ |
} else { |
775 |
+ |
s.forEachRemaining(alwaysThrows); |
776 |
+ |
} |
777 |
+ |
} |
778 |
+ |
|
779 |
+ |
/** |
780 |
|
* Motley crew of threads concurrently randomly hammer the collection. |
781 |
|
*/ |
782 |
|
public void testDetectRaces() throws Throwable { |