jdk-24/test/jdk/java/lang/invoke/MethodHandles/ensureInitialized/Main.java
Mandy Chung 71d646a160 8235521: Replacement API for Unsafe::ensureClassInitialized
Reviewed-by: alanb, chegar, psandoz
2020-06-08 16:55:45 -07:00

81 lines
3.0 KiB
Java

/*
* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
import java.lang.invoke.MethodHandles;
import java.lang.reflect.Method;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import static org.testng.Assert.*;
/**
* @test
* @bug 8235521
* @summary Tests for Lookup::ensureClassInitialized
* @build java.base/* m1/* m2/* Main
* @run testng/othervm --add-modules m1 Main
*/
public class Main {
// Test access to public java.lang class
@Test
public void testPublic() throws Exception {
assertFalse(Helper.isInitialized(PublicInit.class));
MethodHandles.lookup().ensureInitialized(PublicInit.class);
assertTrue(Helper.isInitialized(PublicInit.class));
// no-op if already initialized
MethodHandles.lookup().ensureInitialized(PublicInit.class);
}
// access denied to package-private java.lang class
@Test(expectedExceptions = { IllegalAccessException.class })
public void testPackagePrivate() throws Exception {
Class<?> c = Class.forName("java.lang.DefaultInit", false, null);
assertFalse(Helper.isInitialized(c));
// access denied
MethodHandles.lookup().ensureInitialized(c);
}
// access denied to public class in a non-exported package
@Test(expectedExceptions = { IllegalAccessException.class })
public void testNonExportedPackage() throws Exception {
Class<?> c = Class.forName("jdk.internal.misc.VM", false, null);
// access denied
MethodHandles.lookup().ensureInitialized(c);
}
// invoke p1.Test::test to test module boundary access
@Test
public void testModuleAccess() throws Exception {
Class<?> c = Class.forName("p1.Test");
Method m = c.getMethod("test");
m.invoke(null);
}
@Test(expectedExceptions = { IllegalArgumentException.class })
public void testArrayType() throws Exception {
Class<?> arrayType = PublicInit.class.arrayType();
MethodHandles.lookup().ensureInitialized(arrayType);
}
}