test/jdk/java/lang/reflect/AccessibleObject/CanAccessTest.java - master - githubmirror/panama-vector

test/jdk/java/lang/reflect/AccessibleObject/CanAccessTest.java
131 строка4 KB
Chen Liang
8376277: Migrate java/lang/reflect tests away from TestNG
27 янв 2026, 17:51
27 янв 2026, 17:51bbb4b0d
/*
 * Copyright (c) 2017, 2026, 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @build CanAccessTest
 * @modules java.base/jdk.internal.misc:+open
 * @run junit/othervm CanAccessTest
 * @summary Test AccessibleObject::canAccess method
 */

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.security.SecureClassLoader;

import jdk.internal.misc.Unsafe;
import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.Test;

public class CanAccessTest {
    private static Unsafe INSTANCE = Unsafe.getUnsafe();

    /**
     * null object parameter for Constructor
     */
    @Test
    public void testConstructor() throws Exception {
        Constructor<?> ctor = Unsafe.class.getDeclaredConstructor();
        assertFalse(ctor.canAccess(null));
        assertTrue(ctor.trySetAccessible());

        // non-null object parameter
        assertThrows(IllegalArgumentException.class, () -> ctor.canAccess(INSTANCE));
    }

    /**
     * Test protected constructors
     */
    @Test
    public void testProtectedConstructor() throws Exception {
        TestLoader.testProtectedConstructorNonOpenedPackage();

        Constructor<?> ctor = TestLoader.class.getDeclaredConstructor();
        assertTrue(ctor.canAccess(null));
    }

    /**
     * null object parameter  for static members
     */
    @Test
    public void testStaticMember() throws Exception {
        Method m = Unsafe.class.getDeclaredMethod("throwIllegalAccessError");
        assertFalse(m.canAccess(null));
        assertTrue(m.trySetAccessible());

        // non-null object parameter
        assertThrows(IllegalArgumentException.class, () -> m.canAccess(INSTANCE));
    }

    /**
     * Test protected static
     */
    @Test
    public void testProtectedStatic() throws Exception {
        Method m = TestLoader.testProtectedStatic();
        assertFalse(m.canAccess(null));
    }

    /**
     * the specified object must be an instance of the declaring class
     * for instance members
     */
    @Test
    public void testInstanceMethod() throws Exception {
        Method m = Unsafe.class.getDeclaredMethod("allocateMemory0", long.class);
        assertFalse(m.canAccess(INSTANCE));

        assertThrows(IllegalArgumentException.class, () -> m.canAccess(null));
    }

    /**
     * the specified object must be an instance of the declaring class
     * for instance members
     */
    @Test
    public void testInvalidInstanceObject() throws Exception {
        Class<?> clazz = Class.forName("sun.security.x509.X500Name");
        Method m = clazz.getDeclaredMethod("size");

        assertThrows(IllegalArgumentException.class, () -> m.canAccess(INSTANCE));
    }


    static class TestLoader extends SecureClassLoader {
        public static Method testProtectedStatic() throws Exception {
            Method m = ClassLoader.class.getDeclaredMethod("registerAsParallelCapable");
            assertTrue(m.canAccess(null));
            return m;
        }

        protected TestLoader() throws Exception {
            Constructor<?> ctor = SecureClassLoader.class.getDeclaredConstructor();
            assertFalse(ctor.canAccess(null));
            assertFalse(ctor.trySetAccessible());
        }

        public static void testProtectedConstructorNonOpenedPackage() throws Exception {
            new TestLoader();
        }
    }
}