1 /*
2  * Copyright (C) 2008 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 package dot.junit;
18 
19 public class DxUtil {
20     private static boolean isDalvik = false;
21 
22     static {
23         /**
24          * whether in case of a failure, also ClassNotFoundException is accepted.
25          * this makes sense for invalid classes that got rejected by the dx tools
26          * and thus do not exist in .dex format, so that this class missing means a
27          * the expected verify error (though at the dx tool level)
28          */
29 //        String acnfS = System.getProperty("acceptCNF");
30 //        isDalvik = (acnfS != null && acnfS.equals("true"));
31         //System.out.println("@DX:DxUtil:isDalik="+isDalvik);
32     }
33 
checkVerifyException(Throwable t)34     public static void checkVerifyException(Throwable t) {
35         // the dalvik vm and other vm handle verify errors differently (see the dalvik verifier)
36         // the dalvik vm only throws a VerifyError, whereas other vm can throw all subclasses of
37         // LinkageError:
38         // - ClassCircularityError
39         // - ClassFormatError
40         // - ExceptionInInitializerError
41         // - IncompatibleClassChangeError
42         // - NoClassDefFoundError
43         // - UnsatisfiedLinkError
44         // - VerifyError
45 
46         // in case we are testing the dalvik, we also accept a ClassNotFoundException,
47         // since that may happen when a verify error was thrown by the dx tool and thus no
48         // classes.dex was written at all.
49         //System.out.println("@dx:debug:isDalvik:"+isDalvik);
50         /*
51         if ((t instanceof VerifyError ||
52                 (isDalvik && t instanceof ClassNotFoundException) ||
53                 (!isDalvik && !(t instanceof NoClassDefFoundError)
54                         && t instanceof LinkageError))) {
55                 // ok, this is what we expected
56             System.out.println("@dx:debug:vfe-ok: vfe was:"+t.getClass().getName()+", msg:"+t.getMessage());
57             return;
58         } else {
59             throw new RuntimeException("test did not cause the expected verify error, but:"+t.getClass().getName()+", msg:"+t.getMessage());
60         }
61 */
62         if (t instanceof VerifyError || t instanceof java.lang.IncompatibleClassChangeError ||t instanceof ClassNotFoundException) {
63                 // ok, this is what we expected
64         } else {
65             throw new RuntimeException("VerifyError expected", t);
66         }
67 
68     }
69 }
70