/*

 * Copyright (c) 2014, 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 8023945

 * @summary javac wrongly allows a subclass of an anonymous class

 * @library /tools/javac/lib

 * @build ToolBox

 * @run main AnonymousSubclassTest

 */

import java.util.ArrayList;

import java.io.IOException;

public class AnonymousSubclassTest {

    public static void main(String... args) throws Exception {

        new AnonymousSubclassTest().run();

    }

    // To trigger the error we want, first we need to compile

    // a class with an anonymous inner class: Foo$1.

    final String foo =

        "public class Foo {" +

        "  void m() { Foo f = new Foo() {}; }" +

        "}";

    // Then, we try to subclass the anonymous class

    // Note: we must do this in two classes because a different

    // error will be generated if we don't load Foo$1 through the

    // class reader.

    final String test1 =

        "public class Test1 {" +

        "  void m() {"+

        "    Foo f1 = new Foo();"+

        "    Foo f2 = new Foo$1(f1) {};"+

        "  }" +

        "}";

    final String test2 =

        "public class Test2 {" +

        "  class T extends Foo$1 {" +

        "    public T(Foo f) { super(f); }" +

        "  }"+

        "}";

    void compOk(String code) throws Exception {

        ToolBox.javac(new ToolBox.JavaToolArgs().setSources(code));

    }

    void compFail(String code) throws Exception {

        ArrayList<String> errors = new ArrayList<>();

        ToolBox.JavaToolArgs args = new ToolBox.JavaToolArgs();

        args.setSources(code)

            .appendArgs("-cp", ".", "-XDrawDiagnostics")

            .set(ToolBox.Expect.FAIL)

            .setErrOutput(errors);

        ToolBox.javac(args);

        if (!errors.get(0).contains("cant.inherit.from.anon")) {

            System.out.println(errors.get(0));

            throw new Exception("test failed");

        }

    }

    void run() throws Exception {

        compOk(foo);

        compFail(test1);

        compFail(test2);

    }

}