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 
main(String[] args)38     public static void main(String[] args) throws Exception {
39         new InvalidOptions().run();
40     }
41 
run()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 
test(int expect, String option, String ... expectedOutput)50     void test(int expect, String option, String ... expectedOutput) {
51         String output = runJavap(expect, option);
52         verify(output, expectedOutput);
53     }
54 
runJavap(int expect, String... option)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 
verify(String output, String... expects)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 
error(String msg)74     void error(String msg) {
75         System.err.println(msg);
76         errorCount++;
77     }
78 }
79