Mon, 03 Oct 2016 11:21:14 -0700
Added tag jdk8u122-b02 for changeset 2baeb96fa198
1 /*
2 * Copyright (c) 2013, 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 8007052
27 * @summary javap should include the descriptor for a method in verbose mode
28 */
30 import java.io.File;
31 import java.io.FileWriter;
32 import java.io.IOException;
33 import java.io.PrintWriter;
34 import java.io.StringWriter;
35 import java.util.regex.Pattern;
37 public class DescriptorTest {
38 public static void main(String... args) throws Exception {
39 new DescriptorTest().run();
40 }
42 void run() throws Exception {
43 File srcDir = new File("src");
44 srcDir.mkdirs();
45 File classesDir = new File("classes");
46 classesDir.mkdirs();
48 File f = writeFile(new File(srcDir, "E.java"), "enum E { A, B }");
49 javac("-d", classesDir.getPath(), f.getPath());
50 String out = javap("-p", "-v", new File(classesDir, "E.class").getPath());
51 Pattern expect = Pattern.compile("\\Qprivate E();\\E\\s+\\Qdescriptor: (Ljava/lang/String;I)V\\E");
52 checkContains(out, expect);
53 }
55 File writeFile(File f, String body) throws IOException {
56 try (FileWriter out = new FileWriter(f)) {
57 out.write(body);
58 }
59 return f;
60 }
62 void javac(String... args) throws Exception {
63 StringWriter sw = new StringWriter();
64 PrintWriter pw = new PrintWriter(sw);
65 int rc = com.sun.tools.javac.Main.compile(args, pw);
66 pw.flush();
67 String out = sw.toString();
68 if (!out.isEmpty())
69 System.err.println(out);
70 if (rc != 0)
71 throw new Exception("compilation failed");
72 }
74 String javap(String... args) throws Exception {
75 StringWriter sw = new StringWriter();
76 PrintWriter pw = new PrintWriter(sw);
77 int rc = com.sun.tools.javap.Main.run(args, pw);
78 pw.flush();
79 String out = sw.toString();
80 if (!out.isEmpty())
81 System.err.println(out);
82 if (rc != 0)
83 throw new Exception("javap failed");
84 return out;
85 }
87 void checkContains(String s, Pattern p) throws Exception {
88 if (!p.matcher(s).find())
89 throw new Exception("expected pattern not found: " + p);
90 }
91 }