| /* |
| * Copyright (c) 2018, 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 unit tests for java.lang.invoke.MethodHandles |
| * @library /lib/testlibrary /java/lang/invoke/common |
| * @compile MethodHandlesTest.java MethodHandlesInsertArgumentsTest.java remote/RemoteExample.java |
| * @run junit/othervm/timeout=2500 -XX:+IgnoreUnrecognizedVMOptions |
| * -XX:-VerifyDependencies |
| * -esa |
| * test.java.lang.invoke.MethodHandlesInsertArgumentsTest |
| */ |
| |
| package test.java.lang.invoke; |
| |
| import org.junit.*; |
| import test.java.lang.invoke.lib.CodeCacheOverflowProcessor; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandles; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import static java.lang.invoke.MethodType.methodType; |
| |
| import static org.junit.Assert.*; |
| |
| public class MethodHandlesInsertArgumentsTest extends MethodHandlesTest { |
| |
| @Test // SLOW |
| public void testInsertArguments() throws Throwable { |
| CodeCacheOverflowProcessor.runMHTest(this::testInsertArguments0); |
| } |
| |
| public void testInsertArguments0() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("insertArguments"); |
| for (int nargs = 0; nargs < 50; nargs++) { |
| if (CAN_TEST_LIGHTLY && nargs > 11) break; |
| for (int ins = 0; ins <= nargs; ins++) { |
| if (nargs > 10 && ins > 4 && ins < nargs-4 && ins % 10 != 3) |
| continue; |
| for (int pos = 0; pos <= nargs; pos++) { |
| if (nargs > 10 && pos > 4 && pos < nargs-4 && pos % 10 != 3) |
| continue; |
| if (CAN_TEST_LIGHTLY && pos > 2 && pos < nargs-2) continue; |
| testInsertArguments(nargs, pos, ins); |
| } |
| } |
| } |
| } |
| |
| void testInsertArguments(int nargs, int pos, int ins) throws Throwable { |
| countTest(); |
| MethodHandle target = varargsArray(nargs + ins); |
| Object[] args = randomArgs(target.type().parameterArray()); |
| List<Object> resList = Arrays.asList(args); |
| List<Object> argsToPass = new ArrayList<>(resList); |
| List<Object> argsToInsert = argsToPass.subList(pos, pos + ins); |
| if (verbosity >= 3) |
| System.out.println("insert: "+argsToInsert+" @"+pos+" into "+target); |
| @SuppressWarnings("cast") // cast to spread Object... is helpful |
| MethodHandle target2 = MethodHandles.insertArguments(target, pos, |
| (Object[]/*...*/) argsToInsert.toArray()); |
| argsToInsert.clear(); // remove from argsToInsert |
| Object res2 = target2.invokeWithArguments(argsToPass); |
| Object res2List = Arrays.asList((Object[])res2); |
| if (verbosity >= 3) |
| System.out.println("result: "+res2List); |
| assertEquals(resList, res2List); |
| } |
| |
| private static MethodHandle methodHandle = null; |
| static { |
| try { |
| methodHandle = MethodHandles.lookup().findVirtual( |
| MethodHandlesInsertArgumentsTest.class, |
| "testMethod", |
| methodType(void.class, String.class, String.class)); |
| } catch(ReflectiveOperationException ex) { |
| throw new InternalError(ex); |
| } |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testInsertArgumentsInvalidPos() { |
| countTest(); |
| MethodHandles.insertArguments(methodHandle, -1, "First", "Second"); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testInsertArgumentsTooManyParams() { |
| countTest(); |
| MethodHandles.insertArguments(methodHandle, 1, "First", "Second", "Third"); |
| } |
| |
| @Test(expected = ClassCastException.class) |
| public void testInsertArgumentsPosZero() { |
| countTest(); |
| MethodHandles.insertArguments(methodHandle, 0, "First"); |
| } |
| |
| @Test(expected = ClassCastException.class) |
| public void testInsertArgumentsIncorrectParam() { |
| countTest(); |
| MethodHandles.insertArguments(methodHandle, 1, "First", new Object()); |
| } |
| |
| void testMethod(String a, String b) { |
| } |
| } |