/*
* Copyright ( c ) 2007 , 2013 , 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 .
*/
/*
* @ test
* @ bug 6415572
* @ summary Check exceptional behavior in run and done methods
*/
import java.util.concurrent.Callable;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;
public class Throw {
static void THROW (final Throwable t) {
if (t != null )
Throw .<RuntimeException>uncheckedThrow(t);
}
Callable<Void > thrower(final Throwable t) {
return new Callable<Void >() { public Void call() {
THROW (t); return null ; }};
}
@SuppressWarnings("serial" )
private static class DoneError extends Error {}
@SuppressWarnings("serial" )
private static class DoneException extends RuntimeException {}
static class MyFutureTask extends FutureTask<Void > {
MyFutureTask(Callable<Void > task) { super (task); }
public boolean runAndReset() { return super .runAndReset(); }
}
MyFutureTask checkTask(final MyFutureTask task) {
check(! task.isCancelled());
check(! task.isDone());
return task;
}
MyFutureTask taskFor(final Throwable callableThrowable,
final Throwable doneThrowable) {
return checkTask(
new MyFutureTask(thrower(callableThrowable)) {
protected void done() { THROW (doneThrowable); }});
}
void test(String[] args) throws Throwable {
final Throwable[] callableThrowables = {
null , new Exception(), new Error(), new RuntimeException() };
final Throwable[] doneThrowables = {
new DoneError(), new DoneException() };
for (final Throwable c : callableThrowables) {
for (final Throwable d : doneThrowables) {
THROWS (d.getClass(),
new F(){void f(){
taskFor(c, d).cancel(false );}},
new F(){void f(){
taskFor(c, d).run();}});
if (c != null )
THROWS (d.getClass(),
new F(){void f(){
taskFor(c, d).runAndReset();}});
}
try {
final MyFutureTask task = taskFor(c, null );
check(task.cancel(false ));
THROWS (CancellationException.class ,
new F(){void f() throws Throwable { task.get(); }});
} catch (Throwable t) { unexpected(t); }
if (c != null ) {
final MyFutureTask task = taskFor(c, null );
task.run();
try {
task.get();
fail("Expected ExecutionException" );
} catch (ExecutionException ee) {
equal(c.getClass(), ee.getCause().getClass());
} catch (Throwable t) { unexpected(t); }
}
if (c != null ) {
final MyFutureTask task = taskFor(c, null );
task.runAndReset();
try {
task.get();
fail("Expected ExecutionException" );
} catch (ExecutionException ee) {
check(c.getClass().isInstance(ee.getCause()));
} catch (Throwable t) { unexpected(t); }
}
}
}
//--------------------- Infrastructure ---------------------------
volatile int passed = 0 , failed = 0 ;
void pass() {passed++;}
void fail() {failed++; Thread .dumpStack();}
void fail(String msg) {System.err.println(msg); fail();}
void unexpected(Throwable t) {failed++; t.printStackTrace();}
void check(boolean cond) {if (cond) pass(); else fail();}
void equal(Object x, Object y) {
if (x == null ? y == null : x.equals(y)) pass();
else fail(x + " not equal to " + y);}
public static void main(String[] args) throws Throwable {
new Throw ().instanceMain(args);}
void instanceMain(String[] args) throws Throwable {
try {test(args);} catch (Throwable t) {unexpected(t);}
System.out.printf("%nPassed = %d, failed = %d%n%n" , passed, failed);
if (failed > 0 ) throw new AssertionError("Some tests failed" );}
abstract class F {abstract void f() throws Throwable;}
void THROWS (Class <? extends Throwable> k, F... fs) {
for (F f : fs)
try {f.f(); fail("Expected " + k.getName() + " not thrown" );}
catch (Throwable t) {
if (k.isAssignableFrom(t.getClass())) pass();
else unexpected(t);}}
@SuppressWarnings("unchecked" )
static <T extends Throwable> void uncheckedThrow(Throwable t) throws T {
throw (T)t; // rely on vacuous cast
}
}
Messung V0.5 in Prozent C=95 H=81 G=88
¤ Dauer der Verarbeitung: 0.4 Sekunden
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