T6893943.java revision 2721:f7ce2cfa4cdb 
1/*
2 * Copyright (c) 2010, 2014, 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 6893943 6937318
27 * @summary exit code from javah with no args is 0
28 */
29
30import java.io.*;
31import java.util.*;
32
33public class T6893943 {
34    static final String[] NO_ARGS = { };
35    static final String[] HELP = { "-help" };
36    static final String NEWLINE = System.getProperty("line.separator");
37
38    public static void main(String... args) throws Exception {
39        new T6893943().run();
40    }
41
42    void run() throws Exception {
43        testSimpleAPI(NO_ARGS, 1);
44        testSimpleAPI(HELP, 0);
45        testCommand(NO_ARGS, 1);
46        testCommand(HELP, 0);
47    }
48
49    void testSimpleAPI(String[] args, int expect_rc) throws Exception {
50        System.err.println("Test simple api: " + Arrays.asList(args));
51        StringWriter sw = new StringWriter();
52        PrintWriter pw = new PrintWriter(sw);
53        int rc = com.sun.tools.javah.Main.run(args, pw);
54        pw.close();
55        expect("testSimpleAPI", sw.toString(), rc, expect_rc);
56    }
57
58    void testCommand(String[] args, int expect_rc) throws Exception {
59        System.err.println("Test command: " + Arrays.asList(args));
60        File javaHome = new File(System.getProperty("java.home"));
61        List<String> command = new ArrayList<String>();
62        command.add(new File(new File(javaHome, "bin"), "javah").getPath());
63        command.addAll(Arrays.asList(args));
64        //System.err.println("command: " + command);
65
66        ProcessBuilder pb = new ProcessBuilder(command);
67        pb.redirectErrorStream(true);
68        Process p = pb.start();
69        p.getOutputStream().close();
70        StringWriter sw = new StringWriter();
71        String line;
72        BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
73        while ((line = in.readLine()) != null)
74            sw.write(line + NEWLINE);
75        int rc = p.waitFor();
76        expect("testCommand", sw.toString(), rc, expect_rc);
77    }
78
79    void expect(String name, String out, int actual_rc, int expect_rc) throws Exception {
80        if (out.isEmpty())
81            throw new Exception("No output from javah");
82
83        if (!out.startsWith("Usage:")) {
84            System.err.println(out);
85            throw new Exception("Unexpected output from javah");
86        }
87
88        if (actual_rc != expect_rc)
89            throw new Exception(name + ": unexpected exit: " + actual_rc + ", expected: " + expect_rc);
90    }
91}
92