1 /*
2  * Copyright (C) 2016 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.annotation.Annotation;
18 
19 public class AnnotationTestHelpers {
20   // Provide custom print function that print a deterministic output.
21   // Note that Annotation#toString has unspecified order: it prints out the
22   // fields, which is why we can't rely on it.
23 
asString(Annotation anno)24   public static String asString(Annotation anno) {
25     if (anno instanceof Calendar) {
26       return asString((Calendar)anno);
27     } else if (anno instanceof Calendars) {
28       return asString((Calendars)anno);
29     } else {
30       if (anno == null) {
31         return "<null>";
32       }
33       // Fall-back, usually would only go here in a test failure.
34       return anno.toString();
35     }
36   }
37 
asString(Annotation[] annos)38   public static String asString(Annotation[] annos) {
39     String msg = "";
40 
41     if (annos == null) {
42       msg += "<null>";
43     } else if (annos.length == 0) {
44       msg += "<empty>";
45     } else {
46       for (int i = 0; i < annos.length; ++i) {
47         msg += asString(annos[i]);
48 
49         if (i != annos.length - 1) {
50           msg += ", ";
51         }
52       }
53     }
54 
55     return msg;
56   }
57 
asString(Calendar calendar)58   public static String asString(Calendar calendar) {
59     if (calendar == null) {
60       return "<null>";
61     }
62 
63     return "@Calendar(dayOfMonth=" + calendar.dayOfMonth() + ", dayOfWeek=" +
64       calendar.dayOfWeek() + ", hour=" + calendar.hour() + ")";
65   }
66 
asString(Calendars calendars)67   public static String asString(Calendars calendars) {
68     if (calendars == null) {
69       return "<null>";
70     }
71 
72     String s = "@Calendars(value=[";
73 
74     Calendar[] allValues = calendars.value();
75     for (int i = 0; i < allValues.length; ++i) {
76       s += asString(allValues[i]);
77       if (i != allValues.length - 1) {
78         s += ", ";
79       }
80     }
81 
82     s += "])";
83 
84     return s;
85   }
86 }
87