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 package com.android.internal.util;
18 
19 import static org.junit.Assert.*;
20 
21 import com.android.internal.util.MessageUtils;
22 import android.test.suitebuilder.annotation.SmallTest;
23 import android.util.SparseArray;
24 
25 import org.junit.Test;
26 
27 
28 class A {
29     // Should not see these.
30     private int mMember;
31     public final int CMD_NOT_STATIC = 7;
32     private static final String CMD_NOT_INT = "not an integer";
33     public static int CMD_NOT_FINAL = 34;
34     public static final int kWrongPrefix = 99;
35 
36     // Should see these.
37     private static final int CMD_DO_SOMETHING = 12;
38     public static final int EVENT_SOMETHING_HAPPENED = 45;
39 }
40 
41 class B {
42     public static final int CMD_FOO = 56;
43     public static final int EVENT_BAR = 55;
44     public static final int NOTIFICATION_BAZ = 12;
45 }
46 
47 /**
48  * Unit tests for {@link com.android.util.MessageUtils}.
49  */
50 @SmallTest
51 public class MessageUtilsTest {
52 
53     private static final Class[] CLASSES = { A.class, B.class };
54 
makeSparseArray(int[] keys, String[] values)55     private SparseArray<String> makeSparseArray(int[] keys, String[] values) throws Exception {
56         assertEquals("Must specify same number of keys and values", keys.length, values.length);
57         SparseArray<String> out = new SparseArray<>();
58         for (int i = 0; i < keys.length; i++) {
59             out.put(keys[i], values[i]);
60         }
61         return out;
62     }
63 
assertSparseArrayEquals( SparseArray<String> a1, SparseArray<String> a2)64     private void assertSparseArrayEquals(
65             SparseArray<String> a1, SparseArray<String> a2) throws Exception {
66         String msg = String.format("%s != %s", a1.toString(), a2.toString());
67         assertEquals(msg, a1.size(), a2.size());
68         int size = a1.size();
69         for (int i = 0; i < size; i++) {
70             assertEquals(msg, a1.keyAt(i), a2.keyAt(i));
71             assertEquals(msg, a1.valueAt(i), a2.valueAt(i));
72         }
73     }
74 
75     @Test
basicOperation()76     public void basicOperation() throws Exception {
77         SparseArray<String> expected = makeSparseArray(
78             new int[]{12, 45, 55, 56},
79             new String[]{"CMD_DO_SOMETHING", "EVENT_SOMETHING_HAPPENED", "EVENT_BAR", "CMD_FOO"});
80         assertSparseArrayEquals(expected, MessageUtils.findMessageNames(CLASSES));
81     }
82 
83     @Test
withPrefixes()84     public void withPrefixes() throws Exception {
85         SparseArray<String> expected = makeSparseArray(
86             new int[]{45, 55},
87             new String[]{"EVENT_SOMETHING_HAPPENED", "EVENT_BAR"});
88         assertSparseArrayEquals(expected, MessageUtils.findMessageNames(CLASSES,
89                 new String[]{"EVENT_"}));
90     }
91 
92     @Test(expected=MessageUtils.DuplicateConstantError.class)
duplicateConstants()93     public void duplicateConstants() {
94         MessageUtils.findMessageNames(CLASSES, new String[]{"CMD_", "NOTIFICATION_"});
95     }
96 
97 }
98