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 * 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

 * @bug 8159596

 * @library /lib/testlibrary

 * @modules jdk.compiler

 *          jdk.jartool/sun.tools.jar

 * @build DryRunTest CompilerUtils jdk.testlibrary.ProcessTools

 * @run testng DryRunTest

 * @summary Test java --dry-run

 */

import java.io.File;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import jdk.testlibrary.ProcessTools;

import org.testng.annotations.BeforeTest;

import org.testng.annotations.Test;

import static org.testng.Assert.*;

@Test

public class DryRunTest {

    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 LIBS_DIR = Paths.get("libs");

    // the module name of the test module

    private static final String TEST_MODULE = "test";

    private static final String M_MODULE = "m";

    // the module main class

    private static final String MAIN_CLASS = "jdk.test.Main";

    @BeforeTest

    public void compileTestModule() throws Exception {

        // javac -d mods/$TESTMODULE src/$TESTMODULE/**

        assertTrue(CompilerUtils.compile(SRC_DIR.resolve(M_MODULE),

                                         MODS_DIR,

                                         "-modulesourcepath", SRC_DIR.toString()));

        assertTrue(CompilerUtils.compile(SRC_DIR.resolve(TEST_MODULE),

                                         MODS_DIR,

                                         "-modulesourcepath", SRC_DIR.toString()));

        Files.createDirectories(LIBS_DIR);

        // create JAR files with no module-info.class

        assertTrue(jar(M_MODULE, "p/Lib.class"));

        assertTrue(jar(TEST_MODULE, "jdk/test/Main.class"));

    }

    /**

     * Execute "java" with the given arguments, returning the exit code.

     */

    private int exec(String... args) throws Exception {

       return ProcessTools.executeTestJava(args)

                .outputTo(System.out)

                .errorTo(System.out)

                .getExitValue();

    }

    /**

     * Launch module main

     */

    public void testModule() throws Exception {

        String dir = MODS_DIR.toString();

        String mid = TEST_MODULE + "/" + MAIN_CLASS;

        // no resolution failure

        int exitValue = exec("--dry-run", "-modulepath", dir, "-m", mid);

        assertTrue(exitValue == 0);

    }

    /**

     * Test non-existence module in -addmods

     */

    public void testNonExistAddModules() throws Exception {

        String dir = MODS_DIR.toString();

        String mid = TEST_MODULE + "/" + MAIN_CLASS;

        int exitValue = exec("--dry-run", "-modulepath", dir,

                             "-addmods", "non.existence",

                             "-m", mid);

        assertTrue(exitValue != 0);

    }

    /**

     * Launch main class from class path

     */

    public void testClassPath() throws Exception {

        Path testJar = LIBS_DIR.resolve(TEST_MODULE + ".jar");

        String libs = testJar.toString() + File.pathSeparator +

                        LIBS_DIR.resolve(M_MODULE + ".jar").toString();

        // test pass with m.jar:test.jar

        int exitValue = exec("-classpath", libs, MAIN_CLASS);

        assertTrue(exitValue == 0);

        // m.jar is not on classpath and fails with p.Lib not found

        exitValue = exec("-classpath", testJar.toString(), MAIN_CLASS);

        assertTrue(exitValue != 0);

        // dry pass passes since main is not executed

        exitValue = exec("--dry-run", "-classpath", testJar.toString(), MAIN_CLASS);

        assertTrue(exitValue == 0);

    }

    /**

     * Test automatic modules

     */

    public void testAutomaticModule() throws Exception {

        String libs = LIBS_DIR.resolve(M_MODULE + ".jar").toString() +

                        File.pathSeparator +

                        LIBS_DIR.resolve(TEST_MODULE + ".jar").toString();

        String mid = TEST_MODULE + "/" + MAIN_CLASS;

        // test main method with and without -addmods mm

        int exitValue = exec("-modulepath", LIBS_DIR.toString(),

                             "-m", mid);

        assertTrue(exitValue != 0);

        exitValue = exec("-modulepath", LIBS_DIR.toString(),

                         "-addmods", M_MODULE,

                         "-m", mid);

        assertTrue(exitValue == 0);

        // test dry run with and without -addmods m

        // no resolution failure

        exitValue = exec("--dry-run", "-modulepath", LIBS_DIR.toString(),

                         "-m", mid);

        assertTrue(exitValue == 0);

        exitValue = exec("--dry-run", "-modulepath", LIBS_DIR.toString(),

                         "-addmods", M_MODULE,

                         "-m", mid);

        assertTrue(exitValue == 0);

    }

    /**

     * module m not found

     */

    public void testMissingModule() throws Exception {

        String subdir = MODS_DIR.resolve(TEST_MODULE).toString();

        String mid = TEST_MODULE + "/" + MAIN_CLASS;

        // resolution failure

        int exitValue = exec("--dry-run", "-modulepath", subdir, "-m", mid);

        assertTrue(exitValue != 0);

    }

    private static boolean jar(String name, String entries) throws IOException {

        Path jar = LIBS_DIR.resolve(name + ".jar");

        // jar --create ...

        String classes = MODS_DIR.resolve(name).toString();

        String[] args = {

            "--create",

            "--file=" + jar,

            "-C", classes, entries

        };

        boolean success

            = new sun.tools.jar.Main(System.out, System.out, "jar").run(args);

        return success;

    }

}