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/*
* 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @summary test for VarHandle signature polymorphic methods
* @run testng MethodReferenceTestVarHandle
*/
import java.lang.invoke.*;
import java.util.*;
import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
@Test
public class MethodReferenceTestVarHandle {
interface Setter {
void apply(int[] arr, int idx, int val);
}
interface Getter {
int apply(int[] arr, int idx);
}
public void testSet() throws Throwable {
VarHandle vh = MethodHandles.arrayElementVarHandle(int[].class);
Setter f = vh::set;
int[] data = {0};
f.apply(data, 0, 42);
assertEquals(42, data[0]);
}
public void testGet() throws Throwable {
VarHandle vh = MethodHandles.arrayElementVarHandle(int[].class);
Getter f = vh::get;
int[] data = {42};
int v = f.apply(data, 0);
assertEquals(42, v);
}
}
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