1 /*

     2  * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 4880663

    27  * @summary javap could output whitespace between class name and opening brace

    28  */

    29 

    30 

    31 import java.io.*;

    32 

    33 public class T4880663 {

    34     public static void main(String[] args) throws Exception {

    35         new T4880663().run();

    36     }

    37 

    38     public void run() throws IOException {

    39         File javaFile = writeTestFile();

    40         File classFile = compileTestFile(javaFile);

    41         verify(classFile, "class Test {");

    42 

    43         if (errors > 0)

    44             throw new Error(errors + " found.");

    45     }

    46 

    47     File writeTestFile() throws IOException {

    48         File f = new File("Test.java");

    49         PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));

    50         out.println("class Test { }");

    51         out.close();

    52         return f;

    53     }

    54 

    55     File compileTestFile(File f) {

    56         int rc = com.sun.tools.javac.Main.compile(new String[] { "-g", f.getPath() });

    57         if (rc != 0)

    58             throw new Error("compilation failed. rc=" + rc);

    59         String path = f.getPath();

    60         return new File(path.substring(0, path.length() - 5) + ".class");

    61     }

    62 

    63     String javap(File classFile) {

    64         StringWriter sw = new StringWriter();

    65         PrintWriter out = new PrintWriter(sw);

    66         int rc = com.sun.tools.javap.Main.run(new String[] { classFile.getPath() }, out);

    67         if (rc != 0)

    68             throw new Error("javap failed. rc=" + rc);

    69         out.close();

    70         System.out.println(sw.toString());

    71         return sw.toString();

    72     }

    73 

    74     void verify(File classFile, String... expects) {

    75         String output = javap(classFile);

    76         for (String expect: expects) {

    77             if (output.indexOf(expect)< 0)

    78                 error(expect + " not found");

    79         }

    80     }

    81 

    82     void error(String msg) {

    83         System.err.println(msg);

    84         errors++;

    85     }

    86 

    87     int errors;

    88 }