TestDynMaxHeapFreeRatio.java

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/**
 * @test TestDynMaxHeapFreeRatio
 * @bug 8028391
 * @summary Verify that MaxHeapFreeRatio flag is manageable
 * @library /testlibrary
 * @run main TestDynMaxHeapFreeRatio
 * @run main/othervm -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio
 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:-UseAdaptiveSizePolicy TestDynMaxHeapFreeRatio
 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 TestDynMaxHeapFreeRatio
 * @run main/othervm -XX:MinHeapFreeRatio=51 -XX:MaxHeapFreeRatio=52 TestDynMaxHeapFreeRatio
 * @run main/othervm -XX:MinHeapFreeRatio=75 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio
 */
import com.oracle.java.testlibrary.TestDynamicVMOption;
import com.oracle.java.testlibrary.DynamicVMOptionChecker;

public class TestDynMaxHeapFreeRatio extends TestDynamicVMOption {

    public static final String MinFreeRatioFlagName = "MinHeapFreeRatio";
    public static final String MaxFreeRatioFlagName = "MaxHeapFreeRatio";

    public TestDynMaxHeapFreeRatio() {
        super(MaxFreeRatioFlagName);
    }

    public void test() {

        int minHeapFreeValue = DynamicVMOptionChecker.getIntValue(MinFreeRatioFlagName);
        System.out.println(MinFreeRatioFlagName + " = " + minHeapFreeValue);

        testPercentageValues();

        checkInvalidValue(Integer.toString(minHeapFreeValue - 1));
        checkValidValue(Integer.toString(minHeapFreeValue));
        checkValidValue("100");
    }

    public static void main(String args[]) throws Exception {
        new TestDynMaxHeapFreeRatio().test();
    }

}