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root/jsr166/jsr166/src/test/tck/CompletableFutureTest.java

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.151 by jsr166, Sun Jun 26 17:45:35 2016 UTC vs.
Revision 1.162 by jsr166, Sun Jul 3 15:27:28 2016 UTC

#	Line 30 | Line 30 | import java.util.concurrent.ExecutionExc
30		import java.util.concurrent.Executor;
31		import java.util.concurrent.ForkJoinPool;
32		import java.util.concurrent.ForkJoinTask;
33	+	import java.util.concurrent.RejectedExecutionException;
34		import java.util.concurrent.TimeoutException;
35		import java.util.concurrent.TimeUnit;
36		import java.util.concurrent.atomic.AtomicInteger;
#	Line 549 | Line 550 | public class CompletableFutureTest exten
550		}
551		}
552
553	+	static class CountingRejectingExecutor implements Executor {
554	+	final RejectedExecutionException ex = new RejectedExecutionException();
555	+	final AtomicInteger count = new AtomicInteger(0);
556	+	public void execute(Runnable r) {
557	+	count.getAndIncrement();
558	+	throw ex;
559	+	}
560	+	}
561	+
562		// Used for explicit executor tests
563		static final class ThreadExecutor implements Executor {
564		final AtomicInteger count = new AtomicInteger(0);
#	Line 1233 | Line 1243 | public class CompletableFutureTest exten
1243		r.assertInvoked();
1244		}}
1245
1246	+	public void testRunAsync_rejectingExecutor() {
1247	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1248	+	try {
1249	+	CompletableFuture.runAsync(() -> {}, e);
1250	+	shouldThrow();
1251	+	} catch (Throwable t) {
1252	+	assertSame(e.ex, t);
1253	+	}
1254	+
1255	+	assertEquals(1, e.count.get());
1256	+	}
1257	+
1258		/**
1259		* supplyAsync completes with result of supplier
1260		*/
#	Line 1267 | Line 1289 | public class CompletableFutureTest exten
1289		r.assertInvoked();
1290		}}
1291
1292	+	public void testSupplyAsync_rejectingExecutor() {
1293	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1294	+	try {
1295	+	CompletableFuture.supplyAsync(() -> null, e);
1296	+	shouldThrow();
1297	+	} catch (Throwable t) {
1298	+	assertSame(e.ex, t);
1299	+	}
1300	+
1301	+	assertEquals(1, e.count.get());
1302	+	}
1303	+
1304		// seq completion methods
1305
1306		/**
#	Line 2666 | Line 2700 | public class CompletableFutureTest exten
2700		for (ExecutionMode m : ExecutionMode.values())
2701		for (Integer v1 : new Integer[] { 1, null })
2702		for (Integer v2 : new Integer[] { 2, null })
2703	+	for (boolean pushNop : new boolean[] { true, false })
2704		{
2705		final CompletableFuture<Integer> f = new CompletableFuture<>();
2706		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2678 | Line 2713 | public class CompletableFutureTest exten
2713		checkIncomplete(h1);
2714		rs[0].assertNotInvoked();
2715		rs[1].assertNotInvoked();
2716	+	if (pushNop) {          // ad hoc test of intra-completion interference
2717	+	m.thenRun(f, () -> {});
2718	+	m.thenRun(g, () -> {});
2719	+	}
2720		f.complete(v1);
2721		checkCompletedNormally(h0, null);
2722		checkCompletedNormally(h1, null);
#	Line 3317 | Line 3356 | public class CompletableFutureTest exten
3356		}
3357
3358		/**
3359	+	* Test submissions to an executor that rejects all tasks.
3360	+	*/
3361	+	public void testRejectingExecutor() {
3362	+	for (Integer v : new Integer[] { 1, null })
3363	+	{
3364	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3365	+
3366	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3367	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3368	+
3369	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3370	+
3371	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3372	+	srcs.add(complete);
3373	+	srcs.add(incomplete);
3374	+
3375	+	for (CompletableFuture<Integer> src : srcs) {
3376	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3377	+	fs.add(src.thenRunAsync(() -> {}, e));
3378	+	fs.add(src.thenAcceptAsync((z) -> {}, e));
3379	+	fs.add(src.thenApplyAsync((z) -> z, e));
3380	+
3381	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3382	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3383	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3384	+
3385	+	fs.add(src.applyToEitherAsync(src, (z) -> z, e));
3386	+	fs.add(src.acceptEitherAsync(src, (z) -> {}, e));
3387	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3388	+
3389	+	fs.add(src.thenComposeAsync((z) -> null, e));
3390	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3391	+	fs.add(src.handleAsync((z, t) -> null, e));
3392	+
3393	+	for (CompletableFuture<?> future : fs) {
3394	+	if (src.isDone())
3395	+	checkCompletedWithWrappedException(future, e.ex);
3396	+	else
3397	+	checkIncomplete(future);
3398	+	}
3399	+	futures.addAll(fs);
3400	+	}
3401	+
3402	+	{
3403	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3404	+
3405	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3406	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3407	+
3408	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3409	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3410	+
3411	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3412	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3413	+
3414	+	for (CompletableFuture<?> future : fs)
3415	+	checkIncomplete(future);
3416	+	futures.addAll(fs);
3417	+	}
3418	+
3419	+	{
3420	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3421	+
3422	+	fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e));
3423	+	fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e));
3424	+
3425	+	fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e));
3426	+	fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e));
3427	+
3428	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3429	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3430	+
3431	+	for (CompletableFuture<?> future : fs)
3432	+	checkCompletedWithWrappedException(future, e.ex);
3433	+	futures.addAll(fs);
3434	+	}
3435	+
3436	+	incomplete.complete(v);
3437	+
3438	+	for (CompletableFuture<?> future : futures)
3439	+	checkCompletedWithWrappedException(future, e.ex);
3440	+
3441	+	assertEquals(futures.size(), e.count.get());
3442	+	}}
3443	+
3444	+	/**
3445	+	* Test submissions to an executor that rejects all tasks, but
3446	+	* should never be invoked because the dependent future is
3447	+	* explicitly completed.
3448	+	*/
3449	+	public void testRejectingExecutorNeverInvoked() {
3450	+	for (Integer v : new Integer[] { 1, null })
3451	+	{
3452	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3453	+
3454	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3455	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3456	+
3457	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3458	+
3459	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3460	+	srcs.add(complete);
3461	+	srcs.add(incomplete);
3462	+
3463	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3464	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3465	+	fs.add(incomplete.thenAcceptAsync((z) -> {}, e));
3466	+	fs.add(incomplete.thenApplyAsync((z) -> z, e));
3467	+
3468	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3469	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3470	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3471	+
3472	+	fs.add(incomplete.applyToEitherAsync(incomplete, (z) -> z, e));
3473	+	fs.add(incomplete.acceptEitherAsync(incomplete, (z) -> {}, e));
3474	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3475	+
3476	+	fs.add(incomplete.thenComposeAsync((z) -> null, e));
3477	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3478	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3479	+
3480	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3481	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3482	+
3483	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3484	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3485	+
3486	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3487	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3488	+
3489	+	for (CompletableFuture<?> future : fs)
3490	+	checkIncomplete(future);
3491	+
3492	+	for (CompletableFuture<?> future : fs)
3493	+	future.complete(null);
3494	+
3495	+	incomplete.complete(v);
3496	+
3497	+	for (CompletableFuture<?> future : fs)
3498	+	checkCompletedNormally(future, null);
3499	+
3500	+	assertEquals(0, e.count.get());
3501	+	}}
3502	+
3503	+	/**
3504		* toCompletableFuture returns this CompletableFuture.
3505		*/
3506		public void testToCompletableFuture() {
#	Line 3960 | Line 4144 | public class CompletableFutureTest exten
4144		* A demo of scalability - runtime is O(n).
4145		*/
4146		public void testManyDependents() throws Throwable {
4147	<	final int n = 1_000;
4147	>	final int n = expensiveTests ? 1_000_000 : 10;
4148		final CompletableFuture<Void> head = new CompletableFuture<>();
4149		final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4150		final AtomicInteger count = new AtomicInteger(0);
#	Line 3987 | Line 4171 | public class CompletableFutureTest exten
4171		assertEquals(5 * 3 * n, count.get());
4172		}
4173
4174	+	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4175	+	public void testCoCompletionGarbageRetention() throws Throwable {
4176	+	final int n = expensiveTests ? 1_000_000 : 10;
4177	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4178	+	CompletableFuture<Integer> f;
4179	+	for (int i = 0; i < n; i++) {
4180	+	f = new CompletableFuture<>();
4181	+	f.runAfterEither(incomplete, () -> {});
4182	+	f.complete(null);
4183	+
4184	+	f = new CompletableFuture<>();
4185	+	f.acceptEither(incomplete, (x) -> {});
4186	+	f.complete(null);
4187	+
4188	+	f = new CompletableFuture<>();
4189	+	f.applyToEither(incomplete, (x) -> x);
4190	+	f.complete(null);
4191	+
4192	+	f = new CompletableFuture<>();
4193	+	CompletableFuture.anyOf(new CompletableFuture<?>[] { f, incomplete });
4194	+	f.complete(null);
4195	+	}
4196	+
4197	+	for (int i = 0; i < n; i++) {
4198	+	f = new CompletableFuture<>();
4199	+	incomplete.runAfterEither(f, () -> {});
4200	+	f.complete(null);
4201	+
4202	+	f = new CompletableFuture<>();
4203	+	incomplete.acceptEither(f, (x) -> {});
4204	+	f.complete(null);
4205	+
4206	+	f = new CompletableFuture<>();
4207	+	incomplete.applyToEither(f, (x) -> x);
4208	+	f.complete(null);
4209	+
4210	+	f = new CompletableFuture<>();
4211	+	CompletableFuture.anyOf(new CompletableFuture<?>[] { incomplete, f });
4212	+	f.complete(null);
4213	+	}
4214	+	}
4215	+
4216	+	/*
4217	+	* Tests below currently fail in stress mode due to memory retention.
4218	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck
4219	+	*/
4220	+
4221	+	/** Checks for garbage retention with anyOf. */
4222	+	public void testAnyOfGarbageRetention() throws Throwable {
4223	+	for (Integer v : new Integer[] { 1, null })
4224	+	{
4225	+	final int n = expensiveTests ? 100_000 : 10;
4226	+	CompletableFuture<Integer>[] fs
4227	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4228	+	for (int i = 0; i < fs.length; i++)
4229	+	fs[i] = new CompletableFuture<>();
4230	+	fs[fs.length - 1].complete(v);
4231	+	for (int i = 0; i < n; i++)
4232	+	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4233	+	}}
4234	+
4235	+	/** Checks for garbage retention with allOf. */
4236	+	public void testCancelledAllOfGarbageRetention() throws Throwable {
4237	+	final int n = expensiveTests ? 100_000 : 10;
4238	+	CompletableFuture<Integer>[] fs
4239	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4240	+	for (int i = 0; i < fs.length; i++)
4241	+	fs[i] = new CompletableFuture<>();
4242	+	for (int i = 0; i < n; i++)
4243	+	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4244	+	}
4245	+
4246		//     static <U> U join(CompletionStage<U> stage) {
4247		//         CompletableFuture<U> f = new CompletableFuture<>();
4248		//         stage.whenComplete((v, ex) -> {

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