1 /*

     2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

     3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4 *

     5 * This code is free software; you can redistribute it and/or modify it

     6 * under the terms of the GNU General Public License version 2 only, as

     7 * published by the Free Software Foundation.

     8 *

     9 * This code is distributed in the hope that it will be useful, but WITHOUT

    10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12 * version 2 for more details (a copy is included in the LICENSE file that

    13 * accompanied this code).

    14 *

    15 * You should have received a copy of the GNU General Public License version

    16 * 2 along with this work; if not, write to the Free Software Foundation,

    17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18 *

    19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20 * or visit www.oracle.com if you need additional information or have any

    21 * questions.

    22 */

    23 

    24 /*

    25  * @test TestG1PercentageOptions

    26  * @key gc

    27  * @bug 8068942

    28  * @summary Test argument processing of various percentage options

    29  * @library /testlibrary

    30  * @run driver TestG1PercentageOptions

    31  */

    32 

    33 import com.oracle.java.testlibrary.*;

    34 

    35 public class TestG1PercentageOptions {

    36 

    37     private static final class OptionDescription {

    38         public final String name;

    39         public final String[] valid;

    40         public final String[] invalid;

    41 

    42         OptionDescription(String name_, String[] valid_, String[] invalid_) {

    43             name = name_;

    44             valid = valid_;

    45             invalid = invalid_;

    46         }

    47     }

    48 

    49     private static final String[] defaultValid = new String[] {

    50         "0", "1", "50", "95", "100" };

    51     private static final String[] defaultInvalid = new String[] {

    52         "-10", "110", "bad" };

    53 

    54     // All of the G1 product arguments that are percentages.

    55     private static final OptionDescription[] percentOptions = new OptionDescription[] {

    56         new OptionDescription("G1ConfidencePercent", defaultValid, defaultInvalid)

    57         // Other percentage options are not yet validated by argument processing.

    58     };

    59 

    60     private static void check(String flag, boolean is_valid) throws Exception {

    61         String[] flags = new String[] { "-XX:+UseG1GC", flag, "-version" };

    62         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags);

    63         OutputAnalyzer output = new OutputAnalyzer(pb.start());

    64         if (is_valid) {

    65             output.shouldHaveExitValue(0);

    66         } else {

    67             output.shouldHaveExitValue(1);

    68         }

    69     }

    70 

    71     private static

    72     void check(String name, String value, boolean is_valid) throws Exception {

    73         check("-XX:" + name + "=" + value, is_valid);

    74     }

    75 

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

    77         for (OptionDescription option : percentOptions) {

    78             for (String value : option.valid) {

    79                 check(option.name, value, true);

    80             }

    81             for (String value : option.invalid) {

    82                 check(option.name, value, false);

    83             }

    84             check("-XX:" + option.name, false);

    85             check("-XX:+" + option.name, false);

    86             check("-XX:-" + option.name, false);

    87         }

    88     }

    89 }