/*

 * Copyright (c) 2014, 2015, 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 on bit manipulation related command line options,

 * that should be executed on CPU that does not support

 * required features.

 *

 * Note that this test intended to verify that VM could be launched with

 * specific options and that values of these options processed correctly.

 * In order to do that test launch a new VM with tested options, the same

 * flavor-specific flag as one that was used for parent VM (-client, -server,

 * -minimal, -graal) and '-version'.

 */

public class BMIUnsupportedCPUTest extends BMICommandLineOptionTestBase {

    /**

     * Construct new test on {@code optionName} option.

     *

     * @param optionName Name of the option to be tested

     *                   without -XX:[+-] prefix.

     * @param warningMessage Message that can occur in VM output

     *                       if CPU on test box does not support

     *                       features required by the option.

     * @param cpuFeatures CPU features requires by the option.

     */

    public BMIUnsupportedCPUTest(String optionName,

                                 String warningMessage,

                                 String... cpuFeatures) {

        super(optionName, warningMessage, null, cpuFeatures);

    }

    @Override

    public void runTestCases() throws Throwable {

        if (Platform.isX86() || Platform.isX64()) {

            unsupportedX86CPUTestCases();

        } else {

            unsupportedNonX86CPUTestCases();

        }

    }

    /**

     * Run test cases common for all bit manipulation related VM options

     * targeted to X86 CPU that does not support required features.

     *

     * @throws Throwable if test failed.

     */

    public void unsupportedX86CPUTestCases() throws Throwable {

        /*

          Verify that VM will successfully start up, but output will contain a

          warning. VM will be launched with following options:

          -XX:+<tested option> -version

        */

        String errorString = String.format("JVM should start with '-XX:+%s' "

                + "flag, but output should contain warning.", optionName);

        CommandLineOptionTest.verifySameJVMStartup(

                new String[] { warningMessage }, new String[] { errorMessage },

                errorString, String.format("Option '%s' is unsupported.%n"

                + "Warning expected to be shown.", optionName), ExitCode.OK,

                CommandLineOptionTest.prepareBooleanFlag(

                        optionName, true));

        /*

          Verify that VM will successfully startup without any warnings.

          VM will be launched with following options:

          -XX:-<tested option> -version

        */

        errorString = String.format("JVM should start with '-XX:-%s' flag "

                        + "without any warnings", optionName);

        CommandLineOptionTest.verifySameJVMStartup(null,

                new String[] { warningMessage, errorMessage },

                errorString, errorString, ExitCode.OK,

                CommandLineOptionTest.prepareBooleanFlag(optionName, false));

        /*

         * Verify that on unsupported CPUs option is off by default. VM will be

         * launched with following options: -version

         */

        CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "false",

                String.format("Option '%s' is expected to have default value "

                        + "'false' since feature required is not supported "

                        + "on CPU", optionName));

        /*

          Verify that on unsupported CPUs option will be off even if

          it was explicitly turned on by user. VM will be launched with

          following options: -XX:+<tested option> -version

        */

        CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "false",

                String.format("Option '%s' is expected to have default value"

                        + " 'false' since feature required is not supported on"

                        + " CPU even if user set another value.", optionName),

                CommandLineOptionTest.prepareBooleanFlag(optionName, true));

    }

    /**

     * Run test cases common for all bit manipulation related VM options

     * targeted to non-X86 CPU that does not support required features.

     *

     * @throws Throwable if test failed.

     */

    public void unsupportedNonX86CPUTestCases() throws Throwable {

        /*

          Verify that VM known nothing about tested option. VM will be launched

          with following options: -XX:[+-]<tested option> -version

        */

        CommandLineOptionTest.verifySameJVMStartup(

                new String[] { errorMessage }, null,

                String.format("JVM startup should fail with '-XX:+%s' flag."

                        + "%nOption should be unknown (non-X86CPU).",

                        optionName), "", ExitCode.FAIL,

                CommandLineOptionTest.prepareBooleanFlag(optionName, true));

        CommandLineOptionTest.verifySameJVMStartup(

                new String[] { errorMessage }, null,

                String.format("JVM startup should fail with '-XX:-%s' flag."

                        + "%nOption should be unknown (non-X86CPU)",

                        optionName), "", ExitCode.FAIL,

                CommandLineOptionTest.prepareBooleanFlag(optionName, false));

    }

}