| /* |
| * Copyright (c) 2016, 2017, 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 |
| * @run testng VarHandleTestAccessModeMethodNames |
| * @modules java.base/java.lang.invoke:open |
| */ |
| |
| import org.testng.annotations.DataProvider; |
| import org.testng.annotations.Test; |
| |
| import java.lang.invoke.VarHandle; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.util.stream.Stream; |
| |
| import static org.testng.Assert.assertEquals; |
| |
| public class VarHandleTestAccessModeMethodNames { |
| |
| @DataProvider |
| public static Object[][] accessModesProvider() { |
| return Stream.of(VarHandle.AccessMode.values()). |
| map(am -> new Object[]{am}). |
| toArray(Object[][]::new); |
| } |
| |
| @Test(dataProvider = "accessModesProvider") |
| public void testMethodName(VarHandle.AccessMode am) { |
| assertEquals(am.methodName(), toMethodName(am.name())); |
| } |
| |
| private static String toMethodName(String name) { |
| StringBuilder s = new StringBuilder(name.toLowerCase()); |
| int i; |
| while ((i = s.indexOf("_")) != -1) { |
| s.deleteCharAt(i); |
| s.setCharAt(i, Character.toUpperCase(s.charAt(i))); |
| } |
| return s.toString(); |
| } |
| |
| |
| @Test(dataProvider = "accessModesProvider") |
| public void testReturnType(VarHandle.AccessMode am) throws Exception { |
| assertEquals(getReturnType(am.methodName()), getAccessModeReturnType(am)); |
| } |
| |
| private static Class<?> getReturnType(String name) throws Exception { |
| return VarHandle.class.getMethod(name, Object[].class).getReturnType(); |
| } |
| |
| private static Class<?> getAccessModeReturnType(VarHandle.AccessMode am) throws Exception { |
| Field field_am_at = VarHandle.AccessMode.class.getDeclaredField("at"); |
| field_am_at.setAccessible(true); |
| Field field_at_returnType = field_am_at.getType().getDeclaredField("returnType"); |
| field_at_returnType.setAccessible(true); |
| return (Class<?>) field_at_returnType.get(field_am_at.get(am)); |
| } |
| } |