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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * 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
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 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import jdk.test.lib.Asserts;
import jdk.test.lib.Platform;
import jdk.test.whitebox.WhiteBox;

/**
 * @test
 * @summary Verifies that Platform::isTieredSupported returns correct value.
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @build jdk.test.whitebox.WhiteBox
 * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
 *                   -XX:+WhiteBoxAPI -XX:+TieredCompilation
 *                   TestPlatformIsTieredSupported
 */
public class TestPlatformIsTieredSupported {
    public static void main(String args[]) {
        @SuppressWarnings("deprecation")
        WhiteBox whiteBox = WhiteBox.getWhiteBox();
        boolean tieredCompilation = whiteBox.getBooleanVMFlag(
                "TieredCompilation");
        Asserts.assertEQ(Platform.isTieredSupported(), tieredCompilation,
                "Platform::isTieredSupported should report the same value as "
                        + "TieredCompilation flag's value when "
                        + "+TieredCompilation was explicitly passed to JVM.");
    }
}
