1 /*

     2  * Copyright (c) 2015, 2016, 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 Test that StringConcat is working for JDK >= 9

    27  * @compile -source 6 -target 6 TestIndyStringConcat.java

    28  * @run main TestIndyStringConcat false

    29  * @clean TestIndyStringConcat*

    30  * @compile -source 7 -target 7 TestIndyStringConcat.java

    31  * @run main TestIndyStringConcat false

    32  * @clean TestIndyStringConcat*

    33  * @compile -source 8 -target 8 TestIndyStringConcat.java

    34  * @run main TestIndyStringConcat false

    35  * @clean TestIndyStringConcat*

    36  * @compile -XDstringConcat=inline -source 9 -target 9 TestIndyStringConcat.java

    37  * @run main TestIndyStringConcat false

    38  * @clean TestIndyStringConcat*

    39  * @compile -XDstringConcat=indy -source 9 -target 9 TestIndyStringConcat.java

    40  * @run main TestIndyStringConcat true

    41  * @clean TestIndyStringConcat*

    42  * @compile -XDstringConcat=indyWithConstants -source 9 -target 9 TestIndyStringConcat.java

    43  * @run main TestIndyStringConcat true

    44  */

    45 public class TestIndyStringConcat {

    46 

    47     private static class MyObject {

    48         public String toString() {

    49             throw new RuntimeException("Boyyaa");

    50         }

    51     }

    52 

    53     class Inner { }

    54 

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

    56         boolean useIndyConcat = Boolean.valueOf(args[0]);

    57         try {

    58             String s = "Foo" + new MyObject();

    59         } catch (RuntimeException ex) {

    60             boolean indifiedStringConcat = false;

    61             ex.printStackTrace();

    62             for (StackTraceElement e : ex.getStackTrace()) {

    63                 if (e.getClassName().contains("$$StringConcat") &&

    64                         e.getMethodName().equals("concat")) {

    65                     indifiedStringConcat = true;

    66                     break;

    67                 }

    68             }

    69             if (indifiedStringConcat != useIndyConcat) {

    70                 throw new AssertionError();

    71             }

    72         }

    73     }

    74 }