--- /dev/null 2018-01-17 12:27:18.000000000 -0800 +++ new/test/jdk/java/lang/invoke/FilterArgumentsTest.java 2018-01-17 12:27:17.000000000 -0800 @@ -0,0 +1,135 @@ +/* + * 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 + * @bug 8194554 + * @run testng/othervm test.java.lang.invoke.FilterArgumentsTest + */ + +package test.java.lang.invoke; + +import java.lang.invoke.MethodHandle; +import java.lang.invoke.MethodHandles; +import java.util.ArrayList; +import java.util.List; + +import static java.lang.invoke.MethodHandles.*; + +import static java.lang.invoke.MethodType.methodType; + +import org.testng.annotations.*; +import static org.testng.Assert.*; + +public class FilterArgumentsTest { + + @Test + public static void testFilterA_B_C() throws Throwable { + FilterTest test = new FilterTest( + filterArguments(MH_TEST, 0, MH_FILTER_A, MH_FILTER_B, MH_FILTER_C)); + test.run(List.of("A", "B", "C")); + } + + @Test + public static void testFilterA_B() throws Throwable { + FilterTest test = new FilterTest( + filterArguments(MH_TEST, 0, MH_FILTER_A, MH_FILTER_B)); + test.run(List.of("A", "B")); + } + + @Test + public static void testFilterB_C() throws Throwable { + FilterTest test = new FilterTest( + filterArguments(MH_TEST, 1, MH_FILTER_B, MH_FILTER_C)); + test.run(List.of("B", "C")); + } + + @Test + public static void testFilterB() throws Throwable { + FilterTest test = new FilterTest(filterArguments(MH_TEST, 1, MH_FILTER_B)); + test.run(List.of("B")); + } + + @Test + public static void testFilterC() throws Throwable { + FilterTest test = new FilterTest(filterArguments(MH_TEST, 2, MH_FILTER_C)); + test.run(List.of("C")); + } + + + static class FilterTest { + static List filters = new ArrayList<>(); + + final MethodHandle mh; + FilterTest(MethodHandle mh) { + this.mh = mh; + } + + void run(List expected) throws Throwable { + filters.clear(); + assertEquals("x-0-z", (String)mh.invokeExact("x", 0, 'z')); + assertEquals(expected, filters); + } + + static String test(String s, int i, char c) { + return s + "-" + i + "-" + c; + } + + static String filterA(String s) { + filters.add("A"); + return s; + } + + static int filterB(int value) { + filters.add("B"); + return value; + } + + static char filterC(char c) { + filters.add("C"); + return c; + } + } + + static final MethodHandle MH_TEST; + static final MethodHandle MH_FILTER_A; + static final MethodHandle MH_FILTER_B; + static final MethodHandle MH_FILTER_C; + static final Lookup LOOKUP = MethodHandles.lookup(); + + static { + try { + MH_TEST = LOOKUP.findStatic(FilterTest.class, "test", + methodType(String.class, String.class, int.class, char.class)); + MH_FILTER_A = LOOKUP.findStatic(FilterTest.class, "filterA", + methodType(String.class, String.class)); + MH_FILTER_B = LOOKUP.findStatic(FilterTest.class, "filterB", + methodType(int.class, int.class)); + MH_FILTER_C = LOOKUP.findStatic(FilterTest.class, "filterC", + methodType(char.class, char.class)); + } catch (Exception e) { + throw new RuntimeException(e); + } + } + +}