/*

 * Copyright (c) 2015, 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 8068749

 * @run main ServiceRegistryRestriction

 * @summary Tests ServiceRegistry's restriction on handling

 *          only standard Image I/O service types.

 */

import java.util.*;

import java.util.function.Consumer;

import javax.imageio.spi.*;

public class ServiceRegistryRestriction {

    static class DummyTestSpi {

    }

    ClassLoader cl = ServiceRegistryRestriction.class.getClassLoader();

    <T> void construct(Class<T> clazz) {

        List<Class<?>> list = Arrays.<Class<?>>asList(clazz);

        ServiceRegistry sr = new ServiceRegistry(list.iterator());

    }

    <T> void lookup(Class<T> clazz) {

        Iterator<T> i = ServiceRegistry.lookupProviders(clazz);

    }

    <T> void lookupCL(Class<T> clazz) {

        Iterator<T> i = ServiceRegistry.lookupProviders(clazz, cl);

    }

    <T> void doOneTest(String label, Class<T> clazz, boolean expectFail, Consumer<Class<T>> op) {

        System.out.printf("testing %s with %s...", label, clazz.getName());

        try {

            op.accept(clazz);

            if (expectFail) {

                throw new AssertionError("fail, operation succeeded unexpectedly");

            } else {

                System.out.println("success");

            }

        } catch (IllegalArgumentException iae) {

            if (expectFail) {

                System.out.println("success, got expected IAE");

            } else {

                throw new AssertionError("fail, unexpected exception", iae);

            }

        }

    }

    void doTests(Class<?> clazz, boolean expectFail) {

        doOneTest("constructor", clazz, expectFail, this::construct);

        doOneTest("lookup", clazz, expectFail, this::lookup);

        doOneTest("lookupCL", clazz, expectFail, this::lookupCL);

    }

    void run() {

        doTests(ImageInputStreamSpi.class, false);

        doTests(ImageOutputStreamSpi.class, false);

        doTests(ImageReaderSpi.class, false);

        doTests(ImageTranscoderSpi.class, false);

        doTests(ImageWriterSpi.class, false);

        doTests(DummyTestSpi.class, true);

    }

    public static void main(String[] args) {

        new ServiceRegistryRestriction().run();

    }

}