/*

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.io.File;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.Arrays;

import java.util.stream.Collectors;

import jdk.testlibrary.FileUtils;

import static jdk.testlibrary.ProcessTools.*;

import org.testng.annotations.BeforeTest;

import org.testng.annotations.Test;

import static org.testng.Assert.*;

/**

 * @test

 * @library /lib/testlibrary

 * @modules jdk.compiler

 * @build UserModuleTest CompilerUtils jdk.testlibrary.FileUtils jdk.testlibrary.ProcessTools

 * @run testng UserModuleTest

 */

public class UserModuleTest {

    private static final String JAVA_HOME = System.getProperty("java.home");

    private static final String TEST_SRC = System.getProperty("test.src");

    private static final Path SRC_DIR = Paths.get(TEST_SRC, "src");

    private static final Path MODS_DIR = Paths.get("mods");

    private static final Path IMAGE = Paths.get("image");

    private static final Path JMODS = Paths.get(JAVA_HOME, "jmods");

    // the names of the modules in this test

    private static String[] modules = new String[] {"m1", "m2", "m3"};

    private static boolean hasJmods() {

        if (!Files.exists(JMODS)) {

            System.err.println("Test skipped. NO jmods directory");

            return false;

        }

        return true;

    }

    /*

     * Compiles all modules used by the test

     */

    @BeforeTest

    public void compileAll() throws Throwable {

        if (!hasJmods()) return;

        for (String mn : modules) {

            Path msrc = SRC_DIR.resolve(mn);

            assertTrue(CompilerUtils.compile(msrc, MODS_DIR, "-modulesourcepath", SRC_DIR.toString()));

        }

        if (Files.exists(IMAGE)) {

            FileUtils.deleteFileTreeUnchecked(IMAGE);

        }

        createImage(IMAGE, "java.base", "m1");

    }

    private void createImage(Path outputDir, String... modules) throws Throwable {

        Path jlink = Paths.get(JAVA_HOME, "bin", "jlink");

        String mp = JMODS.toString() + File.pathSeparator + MODS_DIR.toString();

        assertTrue(executeProcess(jlink.toString(), "--output", outputDir.toString(),

                        "--addmods", Arrays.stream(modules).collect(Collectors.joining(",")),

                        "--modulepath", mp)

                        .outputTo(System.out)

                        .errorTo(System.out)

                        .getExitValue() == 0);

    }

    /*

     * Test the image created when linking with a module with

     * no ConcealedPackages attribute

     */

    @Test

    public void test() throws Throwable {

        if (!hasJmods()) return;

        Path java = IMAGE.resolve("bin").resolve("java");

        assertTrue(executeProcess(java.toString(), "-m", "m1/p1.Main")

                        .outputTo(System.out)

                        .errorTo(System.out)

                        .getExitValue() == 0);

    }

    /*

     * Parsing module-info.class

     */

    @Test

        if (!hasJmods()) return;

        Path java = IMAGE.resolve("bin").resolve("java");

        assertTrue(executeProcess(java.toString(),

                                  "-Djdk.system.module.finder.disabledFastPath",

                                  "-m", "m1/p1.Main")

                        .outputTo(System.out)

                        .errorTo(System.out)

                        .getExitValue() == 0);

    }

    /*

     * Test the optimization that deduplicates Set<String> on targets of exports,

     * uses, provides.

     */

    @Test

    public void testDedupSet() throws Throwable {

        if (!hasJmods()) return;

        Path dir = Paths.get("newImage");

        createImage(dir, "java.base", "m1", "m2", "m3");

        Path java = dir.resolve("bin").resolve("java");

        assertTrue(executeProcess(java.toString(), "-m", "m1/p1.Main")

                        .outputTo(System.out)

                        .errorTo(System.out)

                        .getExitValue() == 0);

    }

}