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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,
 * 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 sun.hotspot.WhiteBox;

/**
 * @test
 * @summary Verifies that Platform::isTieredSupported returns correct value.
 * @library /testlibrary /test/lib
 * @modules java.base/sun.misc
 *          java.management
 * @build TestPlatformIsTieredSupported
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
 *                   -XX:+WhiteBoxAPI -XX:+TieredCompilation
 *                   TestPlatformIsTieredSupported
 */
public class TestPlatformIsTieredSupported {
    public static void main(String args[]) {
        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.");
    }
}