Java example source code file (CommandLineTests.java)

This example Java source code file (CommandLineTests.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

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Java - Java tags/keywords

arraylist, charsetsjar, cwd, exp_sdk, exp_sdk_bin_dir, exp_sdk_lib_dir, file, fileoutputstream, ioexception, j\-esa, j\-xmx512m, list, printstream, rtjar, util

The CommandLineTests.java Java example source code

/*
 * Copyright (c) 2007, 2013, 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 CommandLineTests.sh
 * @bug  6521334 6965836 6965836
 * @compile -XDignore.symbol.file CommandLineTests.java Pack200Test.java
 * @run main/timeout=1200 CommandLineTests
 * @summary An ad hoc test to verify the behavior of pack200/unpack200 CLIs,
 *           and a simulation of pack/unpacking in the install repo.
 * @author ksrini
 */

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;
/*
 * We try a potpouri of things ie. we have pack.conf to setup some
 * options as well as a couple of command line options. We also test
 * the packing and unpacking mechanism using the Java APIs. This also
 * simulates pack200 the install workspace, noting that this is a simulation
 * and can only test jars that are guaranteed to be available, also the
 * configuration may not be in sync with the installer workspace.
 */

public class CommandLineTests {
    private static final File CWD = new File(".");
    private static final File EXP_SDK = new File(CWD, "exp-sdk-image");
    private static final File EXP_SDK_LIB_DIR = new File(EXP_SDK, "lib");
    private static final File EXP_SDK_BIN_DIR = new File(EXP_SDK, "bin");
    private static final File EXP_JRE_DIR = new File(EXP_SDK, "jre");
    private static final File EXP_JRE_LIB_DIR = new File(EXP_JRE_DIR, "lib");
    private static final File RtJar = new File(EXP_JRE_LIB_DIR, "rt.jar");
    private static final File CharsetsJar = new File(EXP_JRE_LIB_DIR, "charsets.jar");
    private static final File JsseJar = new File(EXP_JRE_LIB_DIR, "jsse.jar");
    private static final File ToolsJar = new File(EXP_SDK_LIB_DIR, "tools.jar");
    private static final File javaCmd;
    private static final File javacCmd;
    private static final File ConfigFile = new File("pack.conf");
    private static final List<File> jarList;

    static {
        javaCmd = Utils.IsWindows
                    ? new File(EXP_SDK_BIN_DIR, "java.exe")
                    : new File(EXP_SDK_BIN_DIR, "java");

        javacCmd = Utils.IsWindows
                    ? new File(EXP_SDK_BIN_DIR, "javac.exe")
                    : new File(EXP_SDK_BIN_DIR, "javac");

        jarList = new ArrayList<File>();
        jarList.add(RtJar);
        jarList.add(CharsetsJar);
        jarList.add(JsseJar);
        jarList.add(ToolsJar);
    }

    // init test area with a copy of the sdk
    static void init() throws IOException {
            Utils.recursiveCopy(Utils.JavaSDK, EXP_SDK);
            creatConfigFile();
    }
    // cleanup the test area
    static void cleanup() throws IOException {
        Utils.recursiveDelete(EXP_SDK);
        Utils.cleanup();
    }

    // Hopefully, this should be kept in sync with what the installer does.
    static void creatConfigFile() throws IOException {
        FileOutputStream fos = null;
        PrintStream ps = null;
        try {
            fos = new FileOutputStream(ConfigFile);
            ps = new PrintStream(fos);
            ps.println("com.sun.java.util.jar.pack.debug.verbose=0");
            ps.println("pack.modification.time=keep");
            ps.println("pack.keep.class.order=true");
            ps.println("pack.deflate.hint=false");
            // Fail the build, if new or unknown attributes are introduced.
            ps.println("pack.unknown.attribute=error");
            ps.println("pack.segment.limit=-1");
            // BugId: 6328502,  These files will be passed-through as-is.
            ps.println("pack.pass.file.0=java/lang/Error.class");
            ps.println("pack.pass.file.1=java/lang/LinkageError.class");
            ps.println("pack.pass.file.2=java/lang/Object.class");
            ps.println("pack.pass.file.3=java/lang/Throwable.class");
            ps.println("pack.pass.file.4=java/lang/VerifyError.class");
            ps.println("pack.pass.file.5=com/sun/demo/jvmti/hprof/Tracker.class");
        } finally {
            Utils.close(ps);
            Utils.close(fos);
        }
    }

    static void runPack200(boolean jre) throws IOException {
        List<String> cmdsList = new ArrayList();
        for (File f : jarList) {
            if (jre && f.getName().equals("tools.jar")) {
                continue;  // need not worry about tools.jar for JRE
            }
            // make a backup copy for re-use
            File bakFile = new File(f.getName() + ".bak");
            if (!bakFile.exists()) {  // backup
                Utils.copyFile(f, bakFile);
            } else {  // restore
                Utils.copyFile(bakFile, f);
            }
            cmdsList.clear();
            cmdsList.add(Utils.getPack200Cmd());
            cmdsList.add("-J-esa");
            cmdsList.add("-J-ea");
            cmdsList.add(Utils.Is64Bit ? "-J-Xmx1g" : "-J-Xmx512m");
            cmdsList.add("--repack");
            cmdsList.add("--config-file=" + ConfigFile.getAbsolutePath());
            if (jre) {
                cmdsList.add("--strip-debug");
            }
            // NOTE: commented until 6965836 is fixed
            // cmdsList.add("--code-attribute=StackMapTable=strip");
            cmdsList.add(f.getAbsolutePath());
            Utils.runExec(cmdsList);
        }
    }

    static void testJRE() throws IOException {
        runPack200(true);
        // the speciment JRE
        List<String> cmdsList = new ArrayList();
        cmdsList.add(javaCmd.getAbsolutePath());
        cmdsList.add("-verify");
        cmdsList.add("-version");
        Utils.runExec(cmdsList);
    }

    static void testJDK() throws IOException {
        runPack200(false);
        // test the specimen JDK
        List<String> cmdsList = new ArrayList();
        cmdsList.add(javaCmd.getAbsolutePath());
        cmdsList.add("-verify");
        cmdsList.add("-version");
        Utils.runExec(cmdsList);

        // invoke javac to test the tools.jar
        cmdsList.clear();
        cmdsList.add(javacCmd.getAbsolutePath());
        cmdsList.add("-J-verify");
        cmdsList.add("-help");
        Utils.runExec(cmdsList);
    }
    public static void main(String... args) {
        try {
            init();
            testJRE();
            testJDK();
            cleanup(); // cleanup only if we pass successfully
        } catch (IOException ioe) {
            throw new RuntimeException(ioe);
        }
    }
}