MaxWarns.java revision 2933:49d207bf704d 
1/*
2 * Copyright (c) 2013, 2015, 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 * @modules jdk.javadoc/com.sun.tools.doclets.standard
29 */
30
31import java.io.File;
32import java.io.FileWriter;
33import java.io.IOException;
34import java.io.PrintWriter;
35import java.io.StringWriter;
36import java.util.regex.Matcher;
37import java.util.regex.Pattern;
38
39
40public class MaxWarns {
41    public static void main(String... args) throws Exception {
42        new MaxWarns().run();
43    }
44
45    void run() throws Exception {
46        final int defaultMaxWarns = 100;
47        final int genWarns = 150;
48        File f = genSrc(genWarns);
49        String out = javadoc(f);
50        check(out, defaultMaxWarns);
51
52        if (errors > 0)
53            throw new Exception(errors + " errors occurred");
54    }
55
56    File genSrc(int count) throws IOException {
57        StringBuilder sb = new StringBuilder();
58        sb.append("package p;\n")
59            .append("public class C {\n")
60            .append("    /**\n");
61        for (int i = 0; i < count; i++)
62            sb.append("     * @param i").append(i).append(" does not exist!\n");
63        sb.append("     */\n")
64            .append("    public void m() { }\n")
65            .append("}\n");
66        File srcDir = new File("src");
67        srcDir.mkdirs();
68        File f = new File(srcDir, "C.java");
69        try (FileWriter fw = new FileWriter(f)) {
70            fw.write(sb.toString());
71        }
72        return f;
73    }
74
75    String javadoc(File f) {
76        StringWriter sw = new StringWriter();
77        PrintWriter pw = new PrintWriter(sw);
78        String[] args = { "-Xdoclint:none", "-d", "api", f.getPath() };
79        int rc = com.sun.tools.javadoc.Main.execute("javadoc", pw, pw, pw,
80                com.sun.tools.doclets.standard.Standard.class.getName(), args);
81        pw.flush();
82        return sw.toString();
83    }
84
85    void check(String out, int count) {
86        System.err.println(out);
87        Pattern warn = Pattern.compile("warning - @param argument \"i[0-9]+\" is not a parameter name");
88        Matcher m = warn.matcher(out);
89        int n = 0;
90        for (int start = 0; m.find(start); start = m.start() + 1) {
91            n++;
92        }
93        if (n != count)
94            error("unexpected number of warnings reported: " + n + "; expected: " + count);
95
96        Pattern warnCount = Pattern.compile("(?ms).*^([0-9]+) warnings$.*");
97        m = warnCount.matcher(out);
98        if (m.matches()) {
99            n = Integer.parseInt(m.group(1));
100            if (n != count)
101                error("unexpected number of warnings reported: " + n + "; expected: " + count);
102        } else
103            error("total count not found");
104    }
105
106    void error(String msg) {
107        System.err.println("Error: " + msg);
108        errors++;
109    }
110
111    int errors;
112}
113
114