1 /*

     2  * Copyright (c) 2018, 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  */

    23 

    24 /*

    25  * @test

    26  * @summary Smoke test for nestmate classfile support

    27  * @run main CheckNestmateAttrs

    28  * @modules

    29  *      jdk.compiler

    30  *      jdk.jdeps/com.sun.tools.javap

    31  */

    32 

    33 import java.io.PrintWriter;

    34 import java.io.StringWriter;

    35 import java.nio.file.Paths;

    36 

    37 public class CheckNestmateAttrs {

    38 

    39     private void test() { }

    40 

    41     class Inner {

    42         void m() {

    43             class LocalInner {

    44                 void testInner() {

    45                     test();

    46                 }

    47             }

    48         }

    49     }

    50 

    51     static class Nested {

    52         void s() {

    53             class LocalNested { }

    54         }

    55     }

    56 

    57     public static void main(String[] args) {

    58         new CheckNestmateAttrs().run();

    59     }

    60 

    61     void run() {

    62         String [] params = new String [] { "-v",

    63                                             Paths.get(System.getProperty("test.classes"),

    64                                                 "CheckNestmateAttrs.class").toString() };

    65         runCheck(params, new String [] {

    66                         "NestMembers:" +

    67                         "  CheckNestmateAttrs$Nested" +

    68                         "  CheckNestmateAttrs$Nested$1LocalNested" +

    69                         "  CheckNestmateAttrs$Inner" +

    70                         "  CheckNestmateAttrs$Inner$1LocalInner"

    71                         });

    72 

    73         params = new String [] { "-v",

    74                                  Paths.get(System.getProperty("test.classes"),

    75                                      "CheckNestmateAttrs$Inner.class").toString() };

    76 

    77         runCheck(params, new String [] { "NestHost: class CheckNestmateAttrs" });

    78 

    79         params = new String [] { "-v",

    80                                  Paths.get(System.getProperty("test.classes"),

    81                                      "CheckNestmateAttrs$Nested.class").toString() };

    82 

    83         runCheck(params, new String [] { "NestHost: class CheckNestmateAttrs" });

    84 

    85         params = new String [] { "-v",

    86                                  Paths.get(System.getProperty("test.classes"),

    87                                      "CheckNestmateAttrs$Inner$1LocalInner.class").toString() };

    88 

    89         runCheck(params, new String [] {

    90                         "NestHost: class CheckNestmateAttrs",

    91                         "0: aload_0",

    92                         "1: getfield      #1                  // Field this$1:LCheckNestmateAttrs$Inner;",

    93                         "4: getfield      #3                  // Field CheckNestmateAttrs$Inner.this$0:LCheckNestmateAttrs;",

    94                         "7: invokevirtual #4                  // Method CheckNestmateAttrs.test:()V",

    95                         "10: return"

    96         });

    97 

    98         params = new String [] { "-v",

    99                                  Paths.get(System.getProperty("test.classes"),

   100                                      "CheckNestmateAttrs$Nested$1LocalNested.class").toString() };

   101 

   102         runCheck(params, new String [] { "NestHost: class CheckNestmateAttrs" });

   103      }

   104 

   105      void runCheck(String [] params, String [] expectedOut) {

   106         StringWriter s;

   107         String out;

   108 

   109         try (PrintWriter pw = new PrintWriter(s = new StringWriter())) {

   110             com.sun.tools.javap.Main.run(params, pw);

   111             out = s.toString();

   112         }

   113         for (String eo: expectedOut) {

   114             if (!out.contains(eo)) {

   115                 System.out.println("Actual output: " + out);

   116                 throw new AssertionError("Missing output: " + eo);

   117             }

   118         }

   119     }

   120 }