Throws.java

/*
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 * 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.
 *
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 */

/*
 * @test
 * @bug 6398290
 * @summary Check Executors/STPE Exception specifications
 * @author Martin Buchholz
 */

import static java.util.concurrent.Executors.callable;
import static java.util.concurrent.Executors.defaultThreadFactory;
import static java.util.concurrent.Executors.newCachedThreadPool;
import static java.util.concurrent.Executors.newFixedThreadPool;
import static java.util.concurrent.Executors.newScheduledThreadPool;
import static java.util.concurrent.Executors.newSingleThreadExecutor;
import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor;
import static java.util.concurrent.Executors.privilegedCallable;
import static java.util.concurrent.Executors.unconfigurableExecutorService;
import static java.util.concurrent.Executors.unconfigurableScheduledExecutorService;

import java.security.PrivilegedAction;
import java.security.PrivilegedExceptionAction;
import java.util.concurrent.Callable;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;

public class Throws {
    private static void realMain(String[] args) throws Throwable {
        final ThreadFactory fac = defaultThreadFactory();
        final ThreadFactory nullFactory = null;
        final RejectedExecutionHandler reh
            = new RejectedExecutionHandler() {
                    public void rejectedExecution(Runnable r,
                                                  ThreadPoolExecutor executor) {}};
        final RejectedExecutionHandler nullHandler = null;

        THROWS(NullPointerException.class,
               () -> newFixedThreadPool(3, null),
               () -> newCachedThreadPool(null),
               () -> newSingleThreadScheduledExecutor(null),
               () -> newScheduledThreadPool(0, null),
               () -> unconfigurableExecutorService(null),
               () -> unconfigurableScheduledExecutorService(null),
               () -> callable(null, "foo"),
               () -> callable((Runnable) null),
               () -> callable((PrivilegedAction<?>) null),
               () -> callable((PrivilegedExceptionAction<?>) null),
               () -> privilegedCallable((Callable<?>) null),
               () -> new ScheduledThreadPoolExecutor(0, nullFactory),
               () -> new ScheduledThreadPoolExecutor(0, nullFactory, reh),
               () -> new ScheduledThreadPoolExecutor(0, fac, nullHandler));

        THROWS(IllegalArgumentException.class,
               () -> newFixedThreadPool(-42),
               () -> newFixedThreadPool(0),
               () -> newFixedThreadPool(-42, fac),
               () -> newFixedThreadPool(0,   fac),
               () -> newScheduledThreadPool(-42),
               () -> new ScheduledThreadPoolExecutor(-42),
               () -> new ScheduledThreadPoolExecutor(-42, reh),
               () -> new ScheduledThreadPoolExecutor(-42, fac, reh));

        try { newFixedThreadPool(1).shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { newFixedThreadPool(1, fac).shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { newSingleThreadExecutor().shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { newCachedThreadPool().shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { newSingleThreadScheduledExecutor().shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { newSingleThreadScheduledExecutor(fac).shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { newScheduledThreadPool(0).shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { newScheduledThreadPool(0, fac).shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { new ScheduledThreadPoolExecutor(0).shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { new ScheduledThreadPoolExecutor(0, fac).shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

        try { new ScheduledThreadPoolExecutor(0, fac, reh).shutdownNow(); pass(); }
        catch (Throwable t) { unexpected(t); }

    }

    //--------------------- Infrastructure ---------------------------
    static volatile int passed = 0, failed = 0;
    static void pass() {passed++;}
    static void fail() {failed++; Thread.dumpStack();}
    static void fail(String msg) {System.out.println(msg); fail();}
    static void unexpected(Throwable t) {failed++; t.printStackTrace();}
    static void check(boolean cond) {if (cond) pass(); else fail();}
    static 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 {
        try {realMain(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");}
    interface Fun {void f() throws Throwable;}
    static void THROWS(Class<? extends Throwable> k, Fun... fs) {
        for (Fun f : fs)
            try { f.f(); fail("Expected " + k.getName() + " not thrown"); }
            catch (Throwable t) {
                if (k.isAssignableFrom(t.getClass())) pass();
                else unexpected(t);}}
}