test/jdk/java/lang/invoke/FindAccessTest.java - master - githubmirror/panama-vector

test/jdk/java/lang/invoke/FindAccessTest.java
103 строки3 KB
Chen Liang
8373935: Migrate java/lang/invoke tests away from TestNG
23 янв 2026, 20:32
23 янв 2026, 20:3240f7a18
/*
 * Copyright (c) 2015, 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
 * @bug 8139885
 * @run junit/othervm -ea -esa test.java.lang.invoke.FindAccessTest
 */

package test.java.lang.invoke;

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodHandles.Lookup;
import java.lang.invoke.MethodType;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

/**
 * Tests for Lookup.findClass/accessClass extensions added in JEP 274.
 */
public class FindAccessTest {

    static final Lookup LOOKUP = MethodHandles.lookup();

    @Test
    public void testFindSpecial() throws Throwable {
        FindSpecial.C c = new FindSpecial.C();
        assertEquals("I1.m", c.m());
        MethodType t = MethodType.methodType(String.class);
        MethodHandle ci1m = LOOKUP.findSpecial(FindSpecial.I1.class, "m", t, FindSpecial.C.class);
        assertEquals("I1.m", (String) ci1m.invoke(c));
    }

    @Test
    public void testFindSpecialAbstract() throws Throwable {
        FindSpecial.C c = new FindSpecial.C();
        assertEquals("q", c.q());
        MethodType t = MethodType.methodType(String.class);
        var thrown = assertThrows(IllegalAccessException.class,
                () -> LOOKUP.findSpecial(FindSpecial.I3.class, "q", t, FindSpecial.C.class));
        assertEquals(FindSpecial.ABSTRACT_ERROR, thrown.getMessage());
    }

    @Test
    public void testFindClassCNFE() throws ClassNotFoundException, IllegalAccessException {
        assertThrows(ClassNotFoundException.class, () -> LOOKUP.findClass("does.not.Exist"));
    }

    static class FindSpecial {

        interface I1 {
            default String m() {
                return "I1.m";
            }
        }

        interface I2 {
            default String m() {
                return "I2.m";
            }
        }

        interface I3 {
            String q();
        }

        static class C implements I1, I2, I3 {
            public String m() {
                return I1.super.m();
            }
            public String q() {
                return "q";
            }
        }

        static final String ABSTRACT_ERROR = "no such method: test.java.lang.invoke.FindAccessTest$FindSpecial$I3.q()String/invokeSpecial";

    }

}