/*

 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

/*

 * @test

 * @summary jdeps should flag jdk.unsupported exported API as internal

 * @run testng JDKUnsupportedTest

 */

import java.io.PrintWriter;

import java.io.StringWriter;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.*;

import java.util.regex.*;

import org.testng.annotations.DataProvider;

import org.testng.annotations.Test;

import static org.testng.Assert.assertTrue;

public class JDKUnsupportedTest {

    private static final String TEST_CLASSES = System.getProperty("test.classes");

    @DataProvider(name = "data")

    public Object[][] expected() {

        return new Object[][]{

            { "Foo.class", new String[][] {

                               new String[] { "java.lang", "java.base" },

        };

    }

    @Test(dataProvider = "data")

    public void test(String filename, String[][] expected) {

        Path path = Paths.get(TEST_CLASSES, filename);

        Map<String, String> result = jdeps("-M", path.toString());

        for (String[] e : expected) {

            String pn = e[0];

            String module = e[1];

            assertTrue(module.equals(result.get(pn)));

        }

    }

    private static Map<String,String> jdeps(String... args) {

        StringWriter sw = new StringWriter();

        PrintWriter pw = new PrintWriter(sw);

        System.err.println("jdeps " + Arrays.toString(args));

        int rc = com.sun.tools.jdeps.Main.run(args, pw);

        pw.close();

        String out = sw.toString();

        if (!out.isEmpty())

            System.err.println(out);

        if (rc != 0)

            throw new Error("jdeps failed: rc=" + rc);

        return findDeps(out);

    }

    // Pattern used to parse lines

    private static Pattern linePattern = Pattern.compile(".*\r?\n");

    private static Pattern pattern = Pattern.compile("\\s+ -> (\\S+) +(.*)");

    // Use the linePattern to break the given String into lines, applying

    // the pattern to each line to see if we have a match

    private static Map<String,String> findDeps(String out) {

        Map<String,String> result = new LinkedHashMap<>();

        Matcher lm = linePattern.matcher(out);  // Line matcher

        Matcher pm = null;                      // Pattern matcher

        int lines = 0;

        while (lm.find()) {

            lines++;

            CharSequence cs = lm.group();       // The current line

            if (pm == null)

                pm = pattern.matcher(cs);

            else

                pm.reset(cs);

            if (pm.find())

                result.put(pm.group(1), pm.group(2).trim());

            if (lm.end() == out.length())

                break;

        }

        return result;

    }

}