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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import java.lang.reflect.Proxy;

import org.testng.Assert;
import org.testng.annotations.Test;

/*
 * @test
 * @bug 8285401
 * @summary Avoid initialization of parameter types in proxy construction
 * @run testng LazyInitializationTest
 */
public final class LazyInitializationTest {
    private static volatile boolean initialized = false;

    interface Intf {
        void m(Parameter parameter);
    }

    static class Parameter {
        static {
            initialized = true;
        }
    }

    @Test
    public void testLazyInitialization() {
        Intf value = (Intf) Proxy.newProxyInstance(LazyInitializationTest.class.getClassLoader(),
                new Class<?>[]{ Intf.class },
                (proxy, method, args) -> null);
        Assert.assertFalse(initialized, "parameter type initialized unnecessarily");

        value.m(new Parameter());
        Assert.assertTrue(initialized, "parameter type initialized after instantiation");
    }
}