/*
 * Copyright (c) 2017, 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.
 *
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 * questions.
 */

/*
 * @test
 * @summary If a path (directory plus class name) or a directory path exceeds
 *          the MAX_PATH on windows, vm should should print an informative
 *          warning message in additional to throwing a ClassNotFoundException.
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run main LongPath
 */

import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import jdk.test.lib.compiler.CompilerUtils;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;

public class LongPath {

    private static final int MAX_PATH = 260;

    public static void main(String args[]) throws Exception {
        Path sourceDir = Paths.get(System.getProperty("test.src"), "test-classes");
        Path classDir = Paths.get(System.getProperty("test.classes"));
        Path destDir = classDir;

        // create a sub-path so that the destDir length is almost MAX_PATH
        // so that the full path (with the class name) will exceed MAX_PATH
        int subDirLen = MAX_PATH - classDir.toString().length() - 2;
        if (subDirLen > 0) {
            char[] chars = new char[subDirLen];
            Arrays.fill(chars, 'x');
            String subPath = new String(chars);
            destDir = Paths.get(System.getProperty("test.classes"), subPath);
        }

        CompilerUtils.compile(sourceDir, destDir);

        String bootCP = "-Xbootclasspath/a:" + destDir.toString();
        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
            bootCP, "Hello");

        OutputAnalyzer output = new OutputAnalyzer(pb.start());
        try {
            output.shouldContain("Hello World");
            output.shouldHaveExitValue(0);
        } catch (java.lang.RuntimeException e) {
            output.shouldContain("java.lang.ClassNotFoundException: Hello");
            output.shouldContain("warning: construct full path name failed");
            output.shouldHaveExitValue(1);
        }

        // increase the length of destDir to slightly over MAX_PATH
        destDir = Paths.get(destDir.toString(), "xxxxx");
        CompilerUtils.compile(sourceDir, destDir);

        bootCP = "-Xbootclasspath/a:" + destDir.toString();
        pb = ProcessTools.createJavaProcessBuilder(
            bootCP, "Hello");

        output = new OutputAnalyzer(pb.start());
        try {
            output.shouldContain("Hello World");
            output.shouldHaveExitValue(0);
        } catch (java.lang.RuntimeException e) {
            output.shouldContain("java.lang.ClassNotFoundException: Hello");
            output.shouldContain("os::stat failed");
            output.shouldHaveExitValue(1);
        }
    }
}