jdk8-mips64-public/langtools: test/tools/javap/T4880663.java@4a48f3173534

     1 /*

     2  * Copyright (c) 2008, 2011, 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 4880663 6715757 7031005

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

    28  *          javap prints "extends java.lang.Object"

    29  */

    32 import java.io.*;

    34 public class T4880663 {

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

    36         new T4880663().run();

    37     }

    39     public void run() throws IOException {

    40         File javaFile = writeTestFile();

    41         File classFile = compileTestFile(javaFile);

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

    44         if (errors > 0)

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

    46     }

    48     File writeTestFile() throws IOException {

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

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

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

    52         out.close();

    53         return f;

    54     }

    56     File compileTestFile(File f) {

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

    58         if (rc != 0)

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

    60         String path = f.getPath();

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

    62     }

    64     String javap(File classFile) {

    65         StringWriter sw = new StringWriter();

    66         PrintWriter out = new PrintWriter(sw);

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

    68         if (rc != 0)

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

    70         out.close();

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

    72         return sw.toString();

    73     }

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

    76         String output = javap(classFile);

    77         for (String expect: expects) {

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

    79                 error(expect + " not found");

    80         }

    81     }

    83     void error(String msg) {

    84         System.err.println(msg);

    85         errors++;

    86     }

    88     int errors;

    89 }

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