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