/*

 * Copyright (c) 2005, 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 6728697

 * @summary tools/javac/versionOpt.sh fails on OpenJDK builds

 * Test checks the version strings displayed by javac, using

 * strings that come out of the Java runtime.

 * @modules jdk.compiler

 */

import java.io.File;

import java.io.PrintWriter;

import java.io.StringWriter;

import java.net.URL;

public class VersionOpt {

    public static void main(String... args) throws Exception {

        new VersionOpt().run();

    }

    void run() throws Exception {

        // Test functions by comparing the version string from javac against

        // a "golden" version generated automatically from the underlying JVM.

        // As such, it is only effective in testing the "standard" compiler,

        // and not any development version being tested via --patch-modules.

        // Check the version of the compiler being used, and let the test pass

        // automatically if is is a development version.

        Class<?> javacClass = com.sun.tools.javac.Main.class;

        URL location = javacClass.getProtectionDomain().getCodeSource().getLocation();

        if (!location.toString().equals("jrt:/jdk.compiler")) {

            System.err.println("javac not found in system image: " + location);

            System.err.println("rest of test skipped");

            return;

        }

        System.out.println("javac found in " + location);

        String javaVersion = System.getProperty("java.version");

        String javaRuntimeVersion = System.getProperty("java.runtime.version");

        System.out.println("java.version: " + javaVersion);

        System.out.println("java.runtime.version: " + javaRuntimeVersion);

        StringWriter sw = new StringWriter();

        com.sun.tools.javac.Main.compile(new String[] { "-version" }, new PrintWriter(sw));

        String javacVersion = sw.toString().trim();

        sw = new StringWriter();

        com.sun.tools.javac.Main.compile(new String[] { "-fullversion" }, new PrintWriter(sw));

        String javacFullVersion = sw.toString().trim();

        System.out.println("javac -version: " + javacVersion);

        System.out.println("javac -fullversion: " + javacFullVersion);

        checkEqual("javac -version", javacVersion, "javac " + javaVersion);

        checkEqual("javac -fullversion", javacFullVersion, "javac full version \"" + javaRuntimeVersion + "\"");

        if (errors > 0)

            throw new Exception(errors + " errors found");

    }

    void checkEqual(String kind, String found, String expect) {

        if (!found.equals(expect)) {

            System.err.println("error: unexpected value for " + kind);

            System.err.println("expect: >>" + expect + "<<");

            System.err.println(" found: >>" + found + "<<");

            errors++;

        }

    }

    int errors;

}