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/* |
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* Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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|
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/* |
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* @test |
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* @bug 6415572 |
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* @summary Check exceptional behavior in run and done methods |
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*/ |
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|
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import java.util.concurrent.Callable; |
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import java.util.concurrent.CancellationException; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.FutureTask; |
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|
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public class Throw { |
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|
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static void THROW(final Throwable t) { |
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if (t != null) |
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Throw.<RuntimeException>uncheckedThrow(t); |
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} |
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|
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Callable<Void> thrower(final Throwable t) { |
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return new Callable<Void>() { public Void call() { |
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THROW(t); return null; }}; |
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} |
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|
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@SuppressWarnings("serial") |
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private static class DoneError extends Error {} |
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|
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@SuppressWarnings("serial") |
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private static class DoneException extends RuntimeException {} |
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|
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static class MyFutureTask extends FutureTask<Void> { |
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MyFutureTask(Callable<Void> task) { super(task); } |
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public boolean runAndReset() { return super.runAndReset(); } |
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} |
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|
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MyFutureTask checkTask(final MyFutureTask task) { |
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check(! task.isCancelled()); |
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check(! task.isDone()); |
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return task; |
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} |
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|
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MyFutureTask taskFor(final Throwable callableThrowable, |
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final Throwable doneThrowable) { |
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return checkTask( |
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new MyFutureTask(thrower(callableThrowable)) { |
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protected void done() { THROW(doneThrowable); }}); |
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} |
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|
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void test(String[] args) throws Throwable { |
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final Throwable[] callableThrowables = { |
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null, new Exception(), new Error(), new RuntimeException() }; |
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final Throwable[] doneThrowables = { |
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new DoneError(), new DoneException() }; |
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for (final Throwable c : callableThrowables) { |
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for (final Throwable d : doneThrowables) { |
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THROWS(d.getClass(), |
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new F(){void f(){ |
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taskFor(c, d).cancel(false);}}, |
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new F(){void f(){ |
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taskFor(c, d).run();}}); |
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if (c != null) |
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THROWS(d.getClass(), |
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new F(){void f(){ |
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taskFor(c, d).runAndReset();}}); |
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} |
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|
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try { |
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final MyFutureTask task = taskFor(c, null); |
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check(task.cancel(false)); |
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THROWS(CancellationException.class, |
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new F(){void f() throws Throwable { task.get(); }}); |
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} catch (Throwable t) { unexpected(t); } |
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|
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if (c != null) { |
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final MyFutureTask task = taskFor(c, null); |
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task.run(); |
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try { |
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task.get(); |
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fail("Expected ExecutionException"); |
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} catch (ExecutionException ee) { |
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equal(c.getClass(), ee.getCause().getClass()); |
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} catch (Throwable t) { unexpected(t); } |
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} |
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|
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if (c != null) { |
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final MyFutureTask task = taskFor(c, null); |
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task.runAndReset(); |
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try { |
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task.get(); |
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fail("Expected ExecutionException"); |
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} catch (ExecutionException ee) { |
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check(c.getClass().isInstance(ee.getCause())); |
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} catch (Throwable t) { unexpected(t); } |
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} |
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} |
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} |
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|
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//--------------------- Infrastructure --------------------------- |
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volatile int passed = 0, failed = 0; |
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void pass() {passed++;} |
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void fail() {failed++; Thread.dumpStack();} |
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void fail(String msg) {System.err.println(msg); fail();} |
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void unexpected(Throwable t) {failed++; t.printStackTrace();} |
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void check(boolean cond) {if (cond) pass(); else fail();} |
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void equal(Object x, Object y) { |
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if (x == null ? y == null : x.equals(y)) pass(); |
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else fail(x + " not equal to " + y);} |
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public static void main(String[] args) throws Throwable { |
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new Throw().instanceMain(args);} |
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void instanceMain(String[] args) throws Throwable { |
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try {test(args);} catch (Throwable t) {unexpected(t);} |
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System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
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if (failed > 0) throw new AssertionError("Some tests failed");} |
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abstract class F {abstract void f() throws Throwable;} |
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void THROWS(Class<? extends Throwable> k, F... fs) { |
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for (F f : fs) |
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try {f.f(); fail("Expected " + k.getName() + " not thrown");} |
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catch (Throwable t) { |
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if (k.isAssignableFrom(t.getClass())) pass(); |
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else unexpected(t);}} |
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@SuppressWarnings("unchecked") |
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static <T extends Throwable> void uncheckedThrow(Throwable t) throws T { |
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throw (T)t; // rely on vacuous cast |
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} |
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} |
