1 /*
2  * Copyright (C) 2021 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.settingslib.wifi;
18 
19 import static android.os.UserManager.DISALLOW_CONFIG_WIFI;
20 
21 import static com.google.common.truth.Truth.assertThat;
22 
23 import static org.mockito.ArgumentMatchers.anyString;
24 import static org.mockito.Mockito.mock;
25 import static org.mockito.Mockito.never;
26 import static org.mockito.Mockito.reset;
27 import static org.mockito.Mockito.spy;
28 import static org.mockito.Mockito.verify;
29 import static org.mockito.Mockito.when;
30 
31 import android.content.Context;
32 import android.os.Bundle;
33 import android.os.UserManager;
34 
35 import androidx.test.core.app.ApplicationProvider;
36 
37 import org.junit.After;
38 import org.junit.Before;
39 import org.junit.Rule;
40 import org.junit.Test;
41 import org.junit.runner.RunWith;
42 import org.mockito.Mock;
43 import org.mockito.junit.MockitoJUnit;
44 import org.mockito.junit.MockitoRule;
45 import org.robolectric.RobolectricTestRunner;
46 
47 @RunWith(RobolectricTestRunner.class)
48 public class WifiRestrictionsCacheTest {
49 
50     private static final int USER_OWNER = 0;
51     private static final int USER_1 = 1;
52     private static final int USER_2 = 2;
53     private static final int USER_3 = 3;
54     private static final int USER_GUEST = 10;
55 
56     @Rule
57     public final MockitoRule mMockitoRule = MockitoJUnit.rule();
58     @Mock
59     UserManager mUserManager;
60     @Mock
61     Bundle mUserRestrictionsOwner;
62     @Mock
63     Bundle mUserRestrictionsGuest;
64 
65     private Context mContext;
66     private WifiRestrictionsCache mWifiRestrictionsCacheOwner;
67     private WifiRestrictionsCache mWifiRestrictionsCacheGuest;
68 
69     @Before
setUp()70     public void setUp() {
71         mContext = spy(ApplicationProvider.getApplicationContext());
72         when(mContext.getSystemService(UserManager.class)).thenReturn(mUserManager);
73 
74         when(mContext.getUserId()).thenReturn(USER_OWNER);
75         when(mUserManager.getUserRestrictions()).thenReturn(mUserRestrictionsOwner);
76         when(mUserRestrictionsOwner.getBoolean(anyString())).thenReturn(false);
77         mWifiRestrictionsCacheOwner = WifiRestrictionsCache.getInstance(mContext);
78 
79         when(mContext.getUserId()).thenReturn(USER_GUEST);
80         when(mUserManager.getUserRestrictions()).thenReturn(mUserRestrictionsGuest);
81         when(mUserRestrictionsGuest.getBoolean(anyString())).thenReturn(true);
82         mWifiRestrictionsCacheGuest = WifiRestrictionsCache.getInstance(mContext);
83     }
84 
85     @After
tearDown()86     public void tearDown() {
87         WifiRestrictionsCache.clearInstance();
88     }
89 
90     @Test
getInstance_sameUserId_sameInstance()91     public void getInstance_sameUserId_sameInstance() {
92         when(mContext.getUserId()).thenReturn(USER_OWNER);
93         WifiRestrictionsCache instance1 = WifiRestrictionsCache.getInstance(mContext);
94 
95         WifiRestrictionsCache instance2 = WifiRestrictionsCache.getInstance(mContext);
96 
97         assertThat(instance1).isEqualTo(instance2);
98     }
99 
100     @Test
getInstance_diffUserId_diffInstance()101     public void getInstance_diffUserId_diffInstance() {
102         when(mContext.getUserId()).thenReturn(USER_OWNER);
103         WifiRestrictionsCache instance1 = WifiRestrictionsCache.getInstance(mContext);
104 
105         when(mContext.getUserId()).thenReturn(USER_GUEST);
106         WifiRestrictionsCache instance2 = WifiRestrictionsCache.getInstance(mContext);
107 
108         assertThat(instance1).isNotEqualTo(instance2);
109     }
110 
111     @Test
clearInstance_instanceShouldBeEmpty()112     public void clearInstance_instanceShouldBeEmpty() {
113         WifiRestrictionsCache.clearInstance();
114 
115         assertThat(WifiRestrictionsCache.sInstances.size()).isEqualTo(0);
116     }
117 
118     @Test
getRestriction_firstTime_getFromSystem()119     public void getRestriction_firstTime_getFromSystem() {
120         Bundle userRestrictions = mock(Bundle.class);
121         WifiRestrictionsCache wifiRestrictionsCache = mockInstance(USER_1, userRestrictions);
122 
123         wifiRestrictionsCache.getRestriction(DISALLOW_CONFIG_WIFI);
124 
125         verify(userRestrictions).getBoolean(DISALLOW_CONFIG_WIFI);
126     }
127 
128     @Test
getRestriction_secondTime_notGetFromSystem()129     public void getRestriction_secondTime_notGetFromSystem() {
130         Bundle userRestrictions = mock(Bundle.class);
131         WifiRestrictionsCache wifiRestrictionsCache = mockInstance(USER_2, userRestrictions);
132         // First time to get the restriction value
133         wifiRestrictionsCache.getRestriction(DISALLOW_CONFIG_WIFI);
134         reset(userRestrictions);
135 
136         // Second time to get the restriction value
137         wifiRestrictionsCache.getRestriction(DISALLOW_CONFIG_WIFI);
138 
139         verify(userRestrictions, never()).getBoolean(DISALLOW_CONFIG_WIFI);
140     }
141 
142     @Test
clearRestrictions_shouldGetRestrictionFromSystemAgain()143     public void clearRestrictions_shouldGetRestrictionFromSystemAgain() {
144         Bundle userRestrictions = mock(Bundle.class);
145         WifiRestrictionsCache wifiRestrictionsCache = mockInstance(USER_3, userRestrictions);
146         // First time to get the restriction value
147         wifiRestrictionsCache.getRestriction(DISALLOW_CONFIG_WIFI);
148         reset(userRestrictions);
149 
150         // Clear the cache and then second time to get the restriction value
151         wifiRestrictionsCache.clearRestrictions();
152         wifiRestrictionsCache.getRestriction(DISALLOW_CONFIG_WIFI);
153 
154         verify(userRestrictions).getBoolean(DISALLOW_CONFIG_WIFI);
155     }
156 
157     @Test
isConfigWifiAllowed_ownerUser_returnTrue()158     public void isConfigWifiAllowed_ownerUser_returnTrue() {
159         assertThat(mWifiRestrictionsCacheOwner.isConfigWifiAllowed()).isTrue();
160     }
161 
162     @Test
isConfigWifiAllowed_guestUser_returnFalse()163     public void isConfigWifiAllowed_guestUser_returnFalse() {
164         assertThat(mWifiRestrictionsCacheGuest.isConfigWifiAllowed()).isFalse();
165     }
166 
mockInstance(int userId, Bundle userRestrictions)167     private WifiRestrictionsCache mockInstance(int userId, Bundle userRestrictions) {
168         when(mContext.getUserId()).thenReturn(userId);
169         when(mUserManager.getUserRestrictions()).thenReturn(userRestrictions);
170         return WifiRestrictionsCache.getInstance(mContext);
171     }
172 }
173