/*

 * 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.

 */

/*

 * @test

 * @summary Test Multi-Release jar usage in runtime

 * @library /test/lib

 * @library /lib/testlibrary

 * @modules jdk.compiler

 * @build jdk.test.lib.JDKToolFinder jdk.test.lib.JDKToolLauncher

 *        jdk.test.lib.process.OutputAnalyzer

 *        jdk.test.lib.process.ProcessTools

 *        CompilerUtils RuntimeTest

 * @run testng RuntimeTest

 */

import static org.testng.Assert.*;

import java.io.BufferedReader;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

import java.net.URL;

import java.net.URLClassLoader;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.nio.file.StandardCopyOption;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.stream.Stream;

import org.testng.annotations.BeforeClass;

import org.testng.annotations.DataProvider;

import org.testng.annotations.Test;

import jdk.test.lib.JDKToolFinder;

import jdk.test.lib.JDKToolLauncher;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

public class RuntimeTest {

    public static final int SUCCESS = 0;

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

    private final String usr = System.getProperty("user.dir", ".");

    @DataProvider(name = "jarFiles")

    Object[][] jarFiles() {

        return new Object[][] { { "MV_BOTH.jar", 9, 9, 9 },

                { "MV_ONLY_9.jar", 9, 9, 9 },

                { "NON_MV.jar", 8, 8, 8 } };

    }

    @BeforeClass

    protected void setUpTest() throws Throwable {

        compile();

        Path classes = Paths.get("classes");

        jar("cfm", "MV_BOTH.jar", "manifest.txt",

                "-C", classes.resolve("base").toString(), ".",

                "--release", "9", "-C", classes.resolve("v9").toString(), ".",

                "--release", "10", "-C", classes.resolve("v10").toString(), ".")

                .shouldHaveExitValue(0);

        jar("cfm", "MV_ONLY_9.jar", "manifest.txt",

                "-C", classes.resolve("base").toString(), ".",

                "--release", "9", "-C", classes.resolve("v9").toString(), ".")

                .shouldHaveExitValue(0);

        jar("cfm", "NON_MV.jar", "manifest.txt",

                "-C", classes.resolve("base").toString(), ".")

                .shouldHaveExitValue(0);

    }

    @Test(dataProvider = "jarFiles")

    public void testClasspath(String jar, int mainVer, int helperVer,

            int resVer) throws Throwable {

        String[] command = { "-cp", jar, "testpackage.Main" };

        System.out.println("Command arguments:" + Arrays.asList(command));

        System.out.println();

        java(command).shouldHaveExitValue(SUCCESS)

                .shouldContain("Main version: " + mainVer)

                .shouldContain("Helpers version: " + helperVer)

                .shouldContain("Resource version: " + resVer);

    }

    @Test(dataProvider = "jarFiles")

    void testMVJarAsLib(String jar, int mainVer, int helperVer, int resVer)

            throws Throwable {

        String[] apps = { "UseByImport", "UseByReflection" };

        for (String app : apps) {

            String[] command = {"-cp",

                    jar + File.pathSeparatorChar + "classes/test/", app };

            System.out.println("Command arguments:" + Arrays.asList(command));

            System.out.println();

            java(command).shouldHaveExitValue(SUCCESS)

                    .shouldContain("Main version: " + mainVer)

                    .shouldContain("Helpers version: " + helperVer)

                    .shouldContain("Resource version: " + resVer);

        }

    }

    @Test(dataProvider = "jarFiles")

    void testJavaJar(String jar, int mainVer, int helperVer, int resVer)

            throws Throwable {

        String[] command = { "-jar", jar };

        System.out.println("Command arguments:" + Arrays.asList(command));

        System.out.println();

        java(command).shouldHaveExitValue(SUCCESS)

                .shouldContain("Main version: " + mainVer)

                .shouldContain("Helpers version: " + helperVer)

                .shouldContain("Resource version: " + resVer);

    }

    @Test(dataProvider = "jarFiles")

    void testURLClassLoader(String jarName, int mainVer, int helperVer,

            int resVer) throws ClassNotFoundException, NoSuchMethodException,

            IllegalAccessException, IllegalArgumentException,

            InvocationTargetException, IOException {

        Path pathToJAR = Paths.get(jarName).toAbsolutePath();

        URL jarURL1 = new URL("jar:file:" + pathToJAR + "!/");

        URL jarURL2 = new URL("file:///" + pathToJAR);

        testURLClassLoaderURL(jarURL1, mainVer, helperVer, resVer);

        testURLClassLoaderURL(jarURL2, mainVer, helperVer, resVer);

    }

    private static void testURLClassLoaderURL(URL jarURL,

            int mainVersionExpected, int helperVersionExpected,

            int resourceVersionExpected) throws ClassNotFoundException,

            NoSuchMethodException, IllegalAccessException,

            IllegalArgumentException, InvocationTargetException, IOException {

        System.out.println(

                "Testing URLClassLoader MV JAR support for URL: " + jarURL);

        URL[] urls = { jarURL };

        int mainVersionActual;

        int helperVersionActual;

        int resourceVersionActual;

        try (URLClassLoader cl = URLClassLoader.newInstance(urls)) {

            Class c = cl.loadClass("testpackage.Main");

            Method getMainVersion = c.getMethod("getMainVersion");

            mainVersionActual = (int) getMainVersion.invoke(null);

            Method getHelperVersion = c.getMethod("getHelperVersion");

            helperVersionActual = (int) getHelperVersion.invoke(null);

            try (InputStream ris = cl.getResourceAsStream("versionResource");

                    BufferedReader br = new BufferedReader(

                            new InputStreamReader(ris))) {

                resourceVersionActual = Integer.parseInt(br.readLine());

            }

        }

        assertEquals(mainVersionActual, mainVersionExpected,

                         "Test failed: Expected Main class version: "

                         + mainVersionExpected + " Actual version: "

                         + mainVersionActual);

        assertEquals(helperVersionActual, helperVersionExpected,

                         "Test failed: Expected Helper class version: "

                         + helperVersionExpected + " Actual version: "

                         + helperVersionActual);

        assertEquals(resourceVersionActual, resourceVersionExpected,

                         "Test failed: Expected resource version: "

                         + resourceVersionExpected + " Actual version: "

                         + resourceVersionActual);

    }

    @Test(dataProvider = "jarFiles")

    void testJjs(String jar, int mainVer, int helperVer, int resVer)

            throws Throwable {

        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jjs");

        launcher.addToolArg("-cp").addToolArg(jar)

                .addToolArg(src + "/data/runtimetest/MVJarJJSTestScript.js");

        ProcessTools.executeCommand(launcher.getCommand())

                .shouldHaveExitValue(SUCCESS)

                .shouldContain("Main version: " + mainVer)

                .shouldContain("Helpers version: " + helperVer)

                .shouldContain("Resource version: " + resVer);

    }

    private static OutputAnalyzer jar(String... args) throws Throwable {

        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jar");

        Stream.of(args).forEach(launcher::addToolArg);

        return ProcessTools.executeCommand(launcher.getCommand());

    }

    private void compile() throws Throwable {

        String[] vers = { "base", "v9", "v10" };

        for (String ver : vers) {

            Path classes = Paths.get(usr, "classes", ver);

            Files.createDirectories(classes);

            Path source = Paths.get(src, "data", "runtimetest", ver);

            assertTrue(CompilerUtils.compile(source, classes));

            Files.copy(source.resolve("versionResource"),

                    classes.resolve("versionResource"),

                    StandardCopyOption.REPLACE_EXISTING);

        }

        Path classes = Paths.get(usr, "classes", "test");

        Files.createDirectory(classes);

        Path source = Paths.get(src, "data", "runtimetest", "test");

        assertTrue(

                CompilerUtils.compile(source, classes, "-cp", "classes/base/"));

        Files.copy(Paths.get(src, "data", "runtimetest", "manifest.txt"),

                Paths.get(usr, "manifest.txt"),

                StandardCopyOption.REPLACE_EXISTING);

    }

    OutputAnalyzer java(String... args) throws Throwable {

        String java = JDKToolFinder.getJDKTool("java");

        List<String> commands = new ArrayList<>();

        commands.add(java);

        Stream.of(args).forEach(x -> commands.add(x));

        return ProcessTools.executeCommand(new ProcessBuilder(commands));

    }

}