1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 import java.lang.invoke.MethodHandles; 18 import java.lang.invoke.VarHandle; 19 import java.lang.reflect.InvocationTargetException; 20 import java.lang.reflect.Method; 21 22 public class VarHandleReflectiveTest { 23 public static class ReflectiveAccessorInvocations extends VarHandleUnitTest { 24 private static final VarHandle vh; 25 private static int field; 26 27 static { 28 try { 29 Class<?> cls = ReflectiveAccessorInvocations.class; 30 vh = MethodHandles.lookup().findStaticVarHandle(cls, "field", int.class); 31 } catch (Exception e) { 32 throw new RuntimeException(e); 33 } 34 } 35 36 @Override 37 protected void doTest() throws Exception { 38 for (VarHandle.AccessMode accessMode : VarHandle.AccessMode.values()) { 39 Method accessorMethod = 40 VarHandle.class.getMethod(accessMode.methodName(), Object[].class); 41 try { 42 accessorMethod.invoke(vh, new Object[] {new Object[] {}}); 43 failUnreachable(); 44 } catch (InvocationTargetException e) { 45 assertEquals(e.getCause().getClass(), UnsupportedOperationException.class); 46 } 47 } 48 } 49 50 public static void main(String[] args) { 51 new ReflectiveAccessorInvocations().run(); 52 } 53 } 54 55 public static void main(String[] args) { 56 ReflectiveAccessorInvocations.main(args); 57 } 58 } 59
