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

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 *

 * 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,

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/**

 * @test TestDynMinHeapFreeRatio

 * @bug 8028391

 * @summary Verify that MinHeapFreeRatio flag is manageable

 * @library /testlibrary

 * @run main TestDynMinHeapFreeRatio

 * @run main/othervm -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 TestDynMinHeapFreeRatio

 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:-UseAdaptiveSizePolicy TestDynMinHeapFreeRatio

 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 TestDynMinHeapFreeRatio

 * @run main/othervm -XX:MinHeapFreeRatio=51 -XX:MaxHeapFreeRatio=52 TestDynMinHeapFreeRatio

 * @run main/othervm -XX:MinHeapFreeRatio=75 -XX:MaxHeapFreeRatio=100 TestDynMinHeapFreeRatio

 */

import static com.oracle.java.testlibrary.Asserts.assertEQ;

import static com.oracle.java.testlibrary.Asserts.assertFalse;

import static com.oracle.java.testlibrary.Asserts.assertTrue;

import com.oracle.java.testlibrary.DynamicVMOption;

public class TestDynMinHeapFreeRatio {

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

        // high boundary value

        int maxValue = DynamicVMOption.getInt("MaxHeapFreeRatio");

        System.out.println("MaxHeapFreeRatio= " + maxValue);

        String badValues[] = {

            null,

            "",

            "not a number",

            "8.5", "-0.01",

            Integer.toString(Integer.MIN_VALUE),

            Integer.toString(Integer.MAX_VALUE),

            Integer.toString(maxValue + 1),

            "-1024", "-1", "101", "1997"

        };

        String goodValues[] = {

            Integer.toString(maxValue),

            Integer.toString(maxValue - 1),

            Integer.toString(maxValue / 2),

            "0", "1"

        };

        // option under test

        DynamicVMOption option = new DynamicVMOption("MinHeapFreeRatio");

        assertTrue(option.isWriteable(), "Option " + option.name

                + " is expected to be writable");

        for (String v : badValues) {

            assertFalse(option.isValidValue(v),

                    "'" + v + "' is expected to be illegal for flag " + option.name);

        }

        for (String v : goodValues) {

            option.setValue(v);

            String newValue = option.getValue();

            assertEQ(v, newValue);

        }

    }

}