MaxWarns.java revision 1489:fc4cb1577ad6 
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 */
23
24/*
25 * @test
26 * @bug 8005644
27 * @summary set default max errs and max warns
28 */
29
30import java.io.File;
31import java.io.FileWriter;
32import java.io.IOException;
33import java.io.PrintWriter;
34import java.io.StringWriter;
35import java.util.regex.Matcher;
36import java.util.regex.Pattern;
37
38
39public class MaxWarns {
40    public static void main(String... args) throws Exception {
41        new MaxWarns().run();
42    }
43
44    void run() throws Exception {
45        final int defaultMaxWarns = 100;
46        final int genWarns = 150;
47        File f = genSrc(genWarns);
48        String out = javadoc(f);
49        check(out, defaultMaxWarns);
50
51        if (errors > 0)
52            throw new Exception(errors + " errors occurred");
53    }
54
55    File genSrc(int count) throws IOException {
56        StringBuilder sb = new StringBuilder();
57        sb.append("package p;\n")
58            .append("public class C {\n")
59            .append("    /**\n");
60        for (int i = 0; i < count; i++)
61            sb.append("     * @param i").append(i).append(" does not exist!\n");
62        sb.append("     */\n")
63            .append("    public void m() { }\n")
64            .append("}\n");
65        File srcDir = new File("src");
66        srcDir.mkdirs();
67        File f = new File(srcDir, "C.java");
68        try (FileWriter fw = new FileWriter(f)) {
69            fw.write(sb.toString());
70        }
71        return f;
72    }
73
74    String javadoc(File f) {
75        StringWriter sw = new StringWriter();
76        PrintWriter pw = new PrintWriter(sw);
77        String[] args = { "-Xdoclint:none", "-d", "api", f.getPath() };
78        int rc = com.sun.tools.javadoc.Main.execute("javadoc", pw, pw, pw,
79                com.sun.tools.doclets.standard.Standard.class.getName(), args);
80        pw.flush();
81        return sw.toString();
82    }
83
84    void check(String out, int count) {
85        System.err.println(out);
86        Pattern warn = Pattern.compile("warning - @param argument \"i[0-9]+\" is not a parameter name");
87        Matcher m = warn.matcher(out);
88        int n = 0;
89        for (int start = 0; m.find(start); start = m.start() + 1) {
90            n++;
91        }
92        if (n != count)
93            error("unexpected number of warnings reported: " + n + "; expected: " + count);
94
95        Pattern warnCount = Pattern.compile("(?ms).*^([0-9]+) warnings$.*");
96        m = warnCount.matcher(out);
97        if (m.matches()) {
98            n = Integer.parseInt(m.group(1));
99            if (n != count)
100                error("unexpected number of warnings reported: " + n + "; expected: " + count);
101        } else
102            error("total count not found");
103    }
104
105    void error(String msg) {
106        System.err.println("Error: " + msg);
107        errors++;
108    }
109
110    int errors;
111}
112
113