/*

 * Copyright (c) 2016, 2019, 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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 */

/* @test

 * @summary a jtreg wrapper for gtest tests

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 * @run main/native GTestWrapper

 */

import jdk.test.lib.Platform;

import jdk.test.lib.Utils;

import jdk.test.lib.process.ProcessTools;

public class GTestWrapper {

    public static void main(String[] args) throws Throwable {

        // gtestLauncher is located in <test_image>/hotspot/gtest/<vm_variant>/

        // nativePath points either to <test_image>/hotspot/jtreg/native or to <test_image>/hotspot/gtest

        Path nativePath = Paths.get(System.getProperty("test.nativepath"));

        String jvmVariantDir = getJVMVariantSubDir();

        // let's assume it's <test_image>/hotspot/gtest

        Path path = nativePath.resolve(jvmVariantDir);

        if (!path.toFile().exists()) {

            // maybe it is <test_image>/hotspot/jtreg/native

            path = nativePath.getParent()

                             .getParent()

                             .resolve("gtest")

                             .resolve(jvmVariantDir);

        }

        if (!path.toFile().exists()) {

            throw new Error("TESTBUG: the library has not been found in " + nativePath);

        }

        Path execPath = path.resolve("gtestLauncher" + (Platform.isWindows() ? ".exe" : ""));

        ProcessBuilder pb = new ProcessBuilder();

        Map<String, String> env = pb.environment();

        // The GTestWrapper was started using the normal java launcher, which

        // may have set LD_LIBRARY_PATH or LIBPATH to point to the jdk libjvm. In

        // that case, prepend the path with the location of the gtest library."

        String pathVar = Platform.sharedLibraryPathVariableName();

        String ldLibraryPath = System.getenv(pathVar);

        if (ldLibraryPath != null) {

            env.put(pathVar, path + File.pathSeparator + ldLibraryPath);

        }

    }

    private static String getJVMVariantSubDir() {

        if (Platform.isServer()) {

            return "server";

        } else if (Platform.isClient()) {

            return "client";

        } else if (Platform.isMinimal()) {

            return "minimal";

        } else {

            throw new Error("TESTBUG: unsuppported vm variant");

        }

    }

}