jdk8-mips64-public/langtools: test/tools/javac/AnonymousSubclassTest.java@0b6cc4ea670f

     1 /*

     2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    24 /*

    25  * @test

    26  * @bug 8023945

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

    28  * @library /tools/javac/lib

    29  * @build ToolBox

    30  * @run main AnonymousSubclassTest

    31  */

    33 import java.util.ArrayList;

    34 import java.io.IOException;

    36 public class AnonymousSubclassTest {

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

    38         new AnonymousSubclassTest().run();

    39     }

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

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

    43     final String foo =

    44         "public class Foo {" +

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

    46         "}";

    48     // Then, we try to subclass the anonymous class

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

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

    51     // class reader.

    52     final String test1 =

    53         "public class Test1 {" +

    54         "  void m() {"+

    55         "    Foo f1 = new Foo();"+

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

    57         "  }" +

    58         "}";

    60     final String test2 =

    61         "public class Test2 {" +

    62         "  class T extends Foo$1 {" +

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

    64         "  }"+

    65         "}";

    67     void compOk(String code) throws Exception {

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

    69     }

    71     void compFail(String code) throws Exception {

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

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

    74         args.setSources(code)

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

    76             .set(ToolBox.Expect.FAIL)

    77             .setErrOutput(errors);

    78         ToolBox.javac(args);

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

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

    82             throw new Exception("test failed");

    83         }

    84     }

    86     void run() throws Exception {

    87         compOk(foo);

    88         compFail(test1);

    89         compFail(test2);

    90     }

    91 }

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