| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.internal.net.http.common; |
| |
| import org.testng.annotations.DataProvider; |
| import org.testng.annotations.Test; |
| |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.CompletionException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| |
| import static org.testng.Assert.assertThrows; |
| |
| public class MinimalFutureTest { |
| |
| @Test(dataProvider = "futures") |
| public void test(CompletableFuture<Object> mf) { |
| ExecutorService executor = Executors.newSingleThreadExecutor(); |
| try { |
| assertNoObtrusion(mf.thenApply(MinimalFutureTest::apply)); |
| assertNoObtrusion(mf.thenApplyAsync(MinimalFutureTest::apply)); |
| assertNoObtrusion(mf.thenApplyAsync(MinimalFutureTest::apply, executor)); |
| |
| assertNoObtrusion(mf.thenAccept(MinimalFutureTest::accept)); |
| assertNoObtrusion(mf.thenAcceptAsync(MinimalFutureTest::accept)); |
| assertNoObtrusion(mf.thenAcceptAsync(MinimalFutureTest::accept, executor)); |
| |
| assertNoObtrusion(mf.thenRun(MinimalFutureTest::run)); |
| assertNoObtrusion(mf.thenRunAsync(MinimalFutureTest::run)); |
| assertNoObtrusion(mf.thenRunAsync(MinimalFutureTest::run, executor)); |
| |
| assertNoObtrusion(mf.thenCombine(otherFuture(), MinimalFutureTest::apply)); |
| assertNoObtrusion(mf.thenCombineAsync(otherFuture(), MinimalFutureTest::apply)); |
| assertNoObtrusion(mf.thenCombineAsync(otherFuture(), MinimalFutureTest::apply, executor)); |
| |
| assertNoObtrusion(mf.thenAcceptBoth(otherFuture(), MinimalFutureTest::accept)); |
| assertNoObtrusion(mf.thenAcceptBothAsync(otherFuture(), MinimalFutureTest::accept)); |
| assertNoObtrusion(mf.thenAcceptBothAsync(otherFuture(), MinimalFutureTest::accept, executor)); |
| |
| assertNoObtrusion(mf.runAfterBoth(otherFuture(), MinimalFutureTest::run)); |
| assertNoObtrusion(mf.runAfterBothAsync(otherFuture(), MinimalFutureTest::run)); |
| assertNoObtrusion(mf.runAfterBothAsync(otherFuture(), MinimalFutureTest::run, executor)); |
| |
| // "either" methods may return something else if otherFuture() is |
| // not MinimalFuture |
| |
| assertNoObtrusion(mf.applyToEither(otherFuture(), MinimalFutureTest::apply)); |
| assertNoObtrusion(mf.applyToEitherAsync(otherFuture(), MinimalFutureTest::apply)); |
| assertNoObtrusion(mf.applyToEitherAsync(otherFuture(), MinimalFutureTest::apply, executor)); |
| |
| assertNoObtrusion(mf.acceptEither(otherFuture(), MinimalFutureTest::accept)); |
| assertNoObtrusion(mf.acceptEitherAsync(otherFuture(), MinimalFutureTest::accept)); |
| assertNoObtrusion(mf.acceptEitherAsync(otherFuture(), MinimalFutureTest::accept, executor)); |
| |
| assertNoObtrusion(mf.runAfterEither(otherFuture(), MinimalFutureTest::run)); |
| assertNoObtrusion(mf.runAfterEitherAsync(otherFuture(), MinimalFutureTest::run)); |
| assertNoObtrusion(mf.runAfterEitherAsync(otherFuture(), MinimalFutureTest::run, executor)); |
| |
| assertNoObtrusion(mf.thenCompose(MinimalFutureTest::completionStageOf)); |
| assertNoObtrusion(mf.thenComposeAsync(MinimalFutureTest::completionStageOf)); |
| assertNoObtrusion(mf.thenComposeAsync(MinimalFutureTest::completionStageOf, executor)); |
| |
| assertNoObtrusion(mf.handle(MinimalFutureTest::relay)); |
| assertNoObtrusion(mf.handleAsync(MinimalFutureTest::relay)); |
| assertNoObtrusion(mf.handleAsync(MinimalFutureTest::relay, executor)); |
| |
| assertNoObtrusion(mf.whenComplete(MinimalFutureTest::accept)); |
| assertNoObtrusion(mf.whenCompleteAsync(MinimalFutureTest::accept)); |
| assertNoObtrusion(mf.whenCompleteAsync(MinimalFutureTest::accept, executor)); |
| |
| assertNoObtrusion(mf.toCompletableFuture()); |
| assertNoObtrusion(mf.exceptionally(t -> null)); |
| |
| assertNoObtrusion(mf); |
| assertNoObtrusion(mf.copy()); |
| assertNoObtrusion(mf.newIncompleteFuture()); |
| } finally { |
| executor.shutdownNow(); |
| } |
| } |
| |
| private static CompletableFuture<Object> otherFuture() { |
| return MinimalFuture.completedFuture(new Object()); |
| } |
| |
| private static Object relay(Object r, Throwable e) { |
| if (e != null) |
| throw new CompletionException(e); |
| else |
| return r; |
| } |
| |
| private static CompletableFuture<?> completionStageOf(Object r) { |
| return new CompletableFuture<>(); |
| } |
| |
| private static void accept(Object arg) { |
| } |
| |
| private static void accept(Object arg1, Object arg2) { |
| } |
| |
| private static void run() { |
| } |
| |
| private static Object apply(Object arg) { |
| return new Object(); |
| } |
| |
| private static Object apply(Object arg1, Object arg2) { |
| return new Object(); |
| } |
| |
| |
| @DataProvider(name = "futures") |
| public Object[][] futures() { |
| |
| MinimalFuture<Object> mf = new MinimalFuture<>(); |
| mf.completeExceptionally(new Throwable()); |
| |
| MinimalFuture<Object> mf1 = new MinimalFuture<>(); |
| mf1.complete(new Object()); |
| |
| return new Object[][]{ |
| new Object[]{new MinimalFuture<>()}, |
| new Object[]{MinimalFuture.failedFuture(new Throwable())}, |
| new Object[]{MinimalFuture.completedFuture(new Object())}, |
| new Object[]{mf}, |
| new Object[]{mf1}, |
| }; |
| } |
| |
| private void assertNoObtrusion(CompletableFuture<?> cf) { |
| assertThrows(UnsupportedOperationException.class, |
| () -> cf.obtrudeValue(null)); |
| assertThrows(UnsupportedOperationException.class, |
| () -> cf.obtrudeException(new RuntimeException())); |
| } |
| } |