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82 lines
3.5 KiB
Java
82 lines
3.5 KiB
Java
/*
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* Copyright (c) 2021, 2026, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 8259922
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* @run junit/othervm MethodHandlesCollectArgsTest
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*/
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodType;
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import static java.lang.invoke.MethodType.methodType;
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import static org.junit.jupiter.api.Assertions.*;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.MethodSource;
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public class MethodHandlesCollectArgsTest {
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private static final MethodHandle TARGET_II_I = MethodHandles.empty(methodType(int.class, int.class, int.class));
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private static final MethodHandle TARGET__V = MethodHandles.empty(methodType(void.class));
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private static final MethodHandle FILTER_INT = MethodHandles.empty(methodType(int.class, String.class));
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private static final MethodHandle FILTER_VOID = MethodHandles.empty(methodType(void.class, String.class));
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public static Object[][] illegalPos() {
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return new Object[][] {
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{TARGET_II_I, 2, FILTER_INT},
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{TARGET_II_I, 3, FILTER_VOID},
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{TARGET_II_I, -1, FILTER_INT},
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{TARGET_II_I, -1, FILTER_VOID},
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{TARGET__V, 0, FILTER_INT},
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{TARGET__V, 1, FILTER_VOID},
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{TARGET__V, -1, FILTER_VOID},
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{TARGET__V, -1, FILTER_VOID}
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};
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}
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public static Object[][] validPos() {
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return new Object[][] {
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{TARGET_II_I, 0, FILTER_INT, methodType(int.class, String.class, int.class)},
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{TARGET_II_I, 1, FILTER_INT, methodType(int.class, int.class, String.class)},
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{TARGET_II_I, 0, FILTER_VOID, methodType(int.class, String.class, int.class, int.class)},
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{TARGET_II_I, 1, FILTER_VOID, methodType(int.class, int.class, String.class, int.class)},
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{TARGET_II_I, 2, FILTER_VOID, methodType(int.class, int.class, int.class, String.class)},
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{TARGET__V, 0, FILTER_VOID, methodType(void.class, String.class)}
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};
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}
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@ParameterizedTest
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@MethodSource("illegalPos")
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public void illegalPosition(MethodHandle target, int position, MethodHandle filter) {
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assertThrows(IllegalArgumentException.class, () -> MethodHandles.collectArguments(target, position, filter));
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}
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@ParameterizedTest
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@MethodSource("validPos")
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public void legalPosition(MethodHandle target, int position, MethodHandle filter, MethodType expectedType) {
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MethodHandle result = MethodHandles.collectArguments(target, position, filter);
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assertEquals(expectedType, result.type());
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}
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}
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