1 /*

     2  * Copyright (c) 2014, 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 package com.oracle.java.testlibrary;

    24 

    25 /**

    26  * Simple class to check writeability, invalid and valid values for concrete VMOption

    27  */

    28 public class TestDynamicVMOption {

    29 

    30     private final String name;

    31     private final int value;

    32 

    33     /**

    34      * Constructor

    35      *

    36      * @param name of VM option to test

    37      */

    38     public TestDynamicVMOption(String name) {

    39         this.name = name;

    40         this.value = DynamicVMOptionChecker.getIntValue(name);

    41         System.out.println(this.name + " = " + this.value);

    42     }

    43 

    44     /**

    45      * Checks that this value can accept valid percentage values and cannot accept invalid percentage values

    46      *

    47      * @throws RuntimeException

    48      */

    49     public void testPercentageValues() {

    50         checkInvalidValue(Integer.toString(Integer.MIN_VALUE));

    51         checkInvalidValue(Integer.toString(Integer.MAX_VALUE));

    52         checkInvalidValue("-10");

    53         checkInvalidValue("190");

    54     }

    55 

    56     /**

    57      * Reads VM option from PlatformMXBean and parse it to integer value

    58      *

    59      * @return value

    60      */

    61     public int getIntValue() {

    62         return DynamicVMOptionChecker.getIntValue(this.name);

    63     }

    64 

    65     /**

    66      * Sets VM option value

    67      *

    68      * @param value to set

    69      */

    70     public void setIntValue(int value) {

    71         DynamicVMOptionChecker.setIntValue(this.name, value);

    72     }

    73 

    74     /**

    75      * Checks that this VM option is dynamically writable

    76      *

    77      * @throws RuntimeException if option if not writable

    78      * @return true

    79      */

    80     public boolean checkIsWritable() throws RuntimeException {

    81         return DynamicVMOptionChecker.checkIsWritable(this.name);

    82     }

    83 

    84     /**

    85      * Checks that value for this VM option cannot be set

    86      *

    87      * @param value to check

    88      * @throws RuntimeException on error - when expected exception hasn't been thrown

    89      */

    90     public void checkInvalidValue(String value) {

    91         DynamicVMOptionChecker.checkInvalidValue(this.name, value);

    92     }

    93 

    94     /**

    95      * Checks that value for this VM option can be set

    96      *

    97      * @param value to check

    98      * @throws RuntimeException on error - when value in VM is not equal to origin

    99      */

   100     public void checkValidValue(String value) {

   101         DynamicVMOptionChecker.checkValidValue(this.name, value);

   102     }

   103 

   104 }