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
doTest()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 
main(String[] args)50         public static void main(String[] args) {
51             new ReflectiveAccessorInvocations().run();
52         }
53     }
54 
main(String[] args)55     public static void main(String[] args) {
56         ReflectiveAccessorInvocations.main(args);
57     }
58 }
59