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
initialize()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
close()67     public void close() throws IOException {
68         Files.deleteIfExists(output);
69     }
70 
71     @DataProvider(name = "options")
createData()72     public Object[][] createData() {
73         return new Object[][] {
74                 { "-v", ""},
75                 { "-constants", ""}
76         };
77     }
78     @Test(dataProvider = "options")
test(String option, String ignore)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 
javap(String... args)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";
f()101         static String f() { return s + s1 + s2 + s3; }
102     }
103 }
104 
105 
106