jdk

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/*
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 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test
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 * @bug 8032814
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 * @summary LineNumberTable/LocalVariableTable tables duplication for the
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 *          "-v -l" combination of options
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 * @modules jdk.jdeps/com.sun.tools.javap
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 * @compile -g T8032814.java
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 * @run main T8032814
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 */
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import java.io.*;
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import java.util.*;
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public class T8032814 {
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    public static void main(String... args) throws Exception {
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        new T8032814().run();
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    }
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    void run() throws Exception {
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        Class<?> clazz = T8032814.class;
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        int count = clazz.getDeclaredConstructors().length
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                + clazz.getDeclaredMethods().length;
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        test(clazz, 0);
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        test(clazz, count, "-v");
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        test(clazz, count, "-l");
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        test(clazz, count, "-v", "-l");
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        if (errors > 0)
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            throw new Exception(errors + " errors occurred");
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    }
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    void test(Class<?> clazz, int expectedCount, String... opts) throws Exception {
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        System.err.println("test class " + clazz.getName() + " " + Arrays.asList(opts) + ": expect: " + expectedCount);
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        List<String> args = new ArrayList<String>();
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        args.addAll(Arrays.asList(opts));
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        args.addAll(Arrays.asList("-classpath", System.getProperty("test.classes")));
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        args.add(clazz.getName());
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        StringWriter sw = new StringWriter();
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        PrintWriter pw = new PrintWriter(sw);
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        int rc = com.sun.tools.javap.Main.run(args.toArray(new String[args.size()]), pw);
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        pw.close();
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        String out = sw.toString();
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        if (rc != 0)
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            throw new Exception("javap failed unexpectedly: rc=" + rc);
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        int lntCount = 0, lvtCount = 0;
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        for (String line: out.split("[\r\n]+")) {
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            if (line.matches("^ *LineNumberTable:$"))
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                lntCount++;
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            if (line.matches("^ *LocalVariableTable:$"))
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                lvtCount++;
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        }
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        checkEqual("LineNumberTable", lntCount, expectedCount);
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        checkEqual("LocalVariableTable", lvtCount, expectedCount);
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    }
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    void checkEqual(String attr, int found, int expect) {
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        if (found != expect) {
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            error("Unexpected number of occurrences of " + attr + "\n" +
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                "found: " + found + ", expected: " + expect);
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        }
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    }
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    void error(String msg) {
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        System.err.println("Error: " + msg);
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        errors++;
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    }
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    int errors = 0;
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}
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