1 /*

     2  * Copyright (c) 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  * @bug 8143366

    27  * @summary Check that control chars are displayed correctly

    28  * @modules jdk.jdeps/com.sun.tools.javap

    29  * @run testng ControlCharTest

    30  */

    31 

    32 import org.testng.Assert;

    33 import org.testng.annotations.AfterClass;

    34 import org.testng.annotations.BeforeClass;

    35 import org.testng.annotations.DataProvider;

    36 import org.testng.annotations.Test;

    37 

    38 import java.io.IOException;

    39 import java.io.PrintWriter;

    40 import java.nio.file.Files;

    41 import java.nio.file.Path;

    42 import java.nio.file.Paths;

    43 import java.util.Scanner;

    44 import java.util.regex.Pattern;

    45 

    46 public class ControlCharTest {

    47     private String classpath;

    48     private Path output;

    49     private Pattern ptrn;

    50 

    51     @BeforeClass

    52     public void initialize() throws Exception {

    53         String testClasses = System.getProperty("test.classes", ".");

    54         classpath = "-classpath " + testClasses + " ControlCharTest$Strings";

    55         String userdir = System.getProperty("user.dir", ".");

    56         output = Paths.get(userdir, "output.txt");

    57         String regex = Pattern.quote("\\u0001\\u0002\\u0003")  // \u0001\u0002\u0003

    58                 + ".+123.+"                   // 123

    59                 + Pattern.quote("\\\\u0000")  // \\u0000

    60                 + ".+"

    61                 + Pattern.quote("\\u0000")    // \u0000

    62                 ;

    63         ptrn = Pattern.compile(regex, Pattern.DOTALL);

    64     }

    65 

    66     @AfterClass

    67     public void close() throws IOException {

    68         Files.deleteIfExists(output);

    69     }

    70 

    71     @DataProvider(name = "options")

    72     public Object[][] createData() {

    73         return new Object[][] {

    74                 { "-v", ""},

    75                 { "-constants", ""}

    76         };

    77     }

    78     @Test(dataProvider = "options")

    79     public void test(String option, String ignore) throws Exception {

    80         String cmdline = option + " " + classpath;

    81         javap(cmdline.split(" +"));

    82         try (Scanner scnr = new Scanner(output)) {

    83             Assert.assertNotNull(scnr.findWithinHorizon(ptrn, 0));

    84         }

    85     }

    86 

    87     private void javap(String... args) throws Exception {

    88         try (PrintWriter out = new PrintWriter(output.toFile())) {

    89             int rc = com.sun.tools.javap.Main.run(args, out);

    90             if (rc < 0)

    91                 throw new Exception("javap exited, rc=" + rc);

    92         }

    93     }

    94 

    95     // small class to test

    96     static class Strings {

    97         static final String s = "\1\2\3";

    98         static final String s1 = "123";

    99         static final String s2 = "\\u0000";

   100         static final String s3 = "\0";

   101         static String f() { return s + s1 + s2 + s3; }

   102     }

   103 }

   104 

   105