121 lines
4.4 KiB
Java
121 lines
4.4 KiB
Java
/*
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* Copyright (c) 2018, 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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* @summary unit tests for arity limits of methods in java.lang.invoke.MethodHandles
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* @run junit/othervm test.java.lang.invoke.MethodHandlesArityLimitsTest
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**/
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package test.java.lang.invoke;
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import org.junit.*;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.WrongMethodTypeException;
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import java.lang.invoke.MethodType;
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import java.lang.invoke.VarHandle;
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import java.util.List;
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import java.util.stream.IntStream;
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import static org.junit.Assert.*;
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public class MethodHandlesArityLimitsTest {
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private static MethodType mt254 = null;
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private static MethodType mt255 = null;
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static {
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Class<?>[] classes254 = IntStream.range(0, 254)
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.mapToObj(i -> int.class)
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.toArray(Class[]::new);
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mt254 = MethodType.methodType(void.class, classes254);
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mt255 = mt254.appendParameterTypes(int.class);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testDropArgumentsToMatch() {
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MethodHandles.dropArgumentsToMatch(MethodHandles.empty(mt254), 0, mt255.parameterList(), 0);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testEmpty() {
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MethodHandles.empty(mt255);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testExplicitCastArguments() {
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MethodHandles.explicitCastArguments(
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MethodHandles.empty(mt254),
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mt254.dropParameterTypes(0, 1).insertParameterTypes(0, long.class) );
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}
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@Test(expected = IllegalArgumentException.class)
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public void testPermuteArguments() {
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MethodHandles.permuteArguments(
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MethodHandles.empty(MethodType.methodType(void.class)),
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mt255);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testVarHandleInvoker() {
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MethodHandles.varHandleInvoker(VarHandle.AccessMode.GET, mt254);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testVarHandleExactInvoker() {
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MethodHandles.varHandleExactInvoker(VarHandle.AccessMode.GET, mt254);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testMHExactInvoker() {
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MethodHandles.exactInvoker(mt255);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testMHInvoker() {
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MethodHandles.invoker(mt255);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testMHSpreadInvoker() {
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MethodHandles.spreadInvoker(mt255, 255);
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}
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@Test(expected = WrongMethodTypeException.class)
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public void testAsType() throws ReflectiveOperationException {
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MethodHandle asList = MethodHandles.lookup().findStatic(
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java.util.Arrays.class,
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"asList",
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MethodType.methodType(List.class, Object[].class));
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try {
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asList.asType(MethodType.genericMethodType(254));//does not throw IAE or WMTE
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}
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catch(WrongMethodTypeException wmte) {
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throw new AssertionError("Unexpected WrongMethodTypeException thrown", wmte);
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}
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asList.asType(MethodType.genericMethodType(255));//throws WMTE
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}
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}
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