jdk

1
/*
2
 * Copyright (c) 2013, 2018, 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 8027411 8032869
27
 * @summary test an invalid option
28
 * @modules jdk.jdeps/com.sun.tools.javap
29
 */
30

31
import java.io.*;
32
import java.util.zip.*;
33

34
public class InvalidOptions {
35
    int errorCount;
36
    String log;
37

38
    public static void main(String[] args) throws Exception {
39
        new InvalidOptions().run();
40
    }
41

42
    void run() throws Exception {
43
        test(2, "-b", "Error: unknown option: -b",
44
                      "Usage: javap <options> <classes>",
45
                      "use --help for a list of possible options");
46
        if (errorCount > 0)
47
            throw new Exception(errorCount + " errors received");
48
    }
49

50
    void test(int expect, String option, String ... expectedOutput) {
51
        String output = runJavap(expect, option);
52
        verify(output, expectedOutput);
53
    }
54

55
    String runJavap(int expect, String... option) {
56
        StringWriter sw = new StringWriter();
57
        PrintWriter pw = new PrintWriter(sw);
58
        int rc = com.sun.tools.javap.Main.run(option, pw);
59
        pw.close();
60
        System.out.println("javap prints:");
61
        System.out.println(sw);
62
        if (rc != expect)
63
           throw new Error("Expect to return " + expect + ", but return " + rc);
64
        return sw.toString();
65
    }
66

67
    void verify(String output, String... expects) {
68
        for (String expect: expects) {
69
            if (!output.contains(expect))
70
                error(expect + " not found");
71
        }
72
    }
73

74
    void error(String msg) {
75
        System.err.println(msg);
76
        errorCount++;
77
    }
78
}
79