1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.dx.mockito.tests;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.junit.Assume.assumeTrue;
import static org.mockito.Mockito.doCallRealMethod;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.provider.Settings;
import android.view.View;
import android.widget.FrameLayout;
import androidx.test.InstrumentationRegistry;
import androidx.test.runner.AndroidJUnit4;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;
/**
* Simplified versions of bugs seen in the past
*/
@RunWith(AndroidJUnit4.class)
public class BlacklistedApis {
@Before
public void onlyRunOnPlatformsThatSupportBlacklisting() {
assumeTrue(Build.VERSION.SDK_INT >= 28);
}
/**
* Check if the application is marked as {@code android:debuggable} in the manifest
*
* @return {@code true} iff it is marked as such
*/
private boolean isDebuggable() throws PackageManager.NameNotFoundException {
Context context = InstrumentationRegistry.getTargetContext();
PackageInfo packageInfo = context.getPackageManager().getPackageInfo(
context.getPackageName(), 0);
return (packageInfo.applicationInfo.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0;
}
@Test
@Ignore("b/117829328")
public void callBlacklistedPublicMethodRealMethod() throws Exception {
Context targetContext = InstrumentationRegistry.getTargetContext();
FrameLayout child = new FrameLayout(targetContext);
FrameLayout parent = spy(new FrameLayout(targetContext));
if (isDebuggable()) {
// This calls a blacklisted public method.
// Since Android P these methods are not callable from outside of the Android framework
// anymore:
//
// https://android-developers.googleblog.com/2018/02/
// improving-stability-by-reducing-usage.html
//
// Hence if we use a subclass mock this will fail. Inline mocking does not have this
// problem as the mock class is the same as the mocked class.
parent.addView(child);
} else {
try {
parent.addView(child);
fail();
} catch (NoSuchMethodError expected) {
// expected
}
}
}
@Test
public void copyBlacklistedFields() throws Exception {
// Can only copy blacklisted fields when debuggable
assumeTrue(isDebuggable());
Context targetContext = InstrumentationRegistry.getTargetContext();
FrameLayout child = new FrameLayout(targetContext);
FrameLayout parent = spy(new FrameLayout(targetContext));
parent.addView(child);
// During cloning of the parent spy, all fields are copied. This accesses a blacklisted
// fields. Since Android P these fields are not visible from outside of the Android
// framework anymore:
//
// https://android-developers.googleblog.com/2018/02/
// improving-stability-by-reducing-usage.html
//
// As 'measure' requires the fields to be initialized, this fails if the fields are not
// copied.
parent.measure(100, 100);
}
@SuppressLint({"PrivateApi", "CheckReturnValue"})
@Test
public void cannotCallBlackListedAfterSpying() {
// Spying and mocking might change the View class's byte code
spy(new View(InstrumentationRegistry.getTargetContext(), null));
mock(View.class);
// View#setNotifyAutofillManagerOnClick is a blacklisted method. Resolving it should fail
try {
View.class.getDeclaredMethod("setNotifyAutofillManagerOnClick", Boolean.TYPE);
fail();
} catch (NoSuchMethodException expected) {
// expected
}
}
public static class CallBlackListedMethod {
@SuppressLint("PrivateApi")
boolean callingBlacklistedMethodCausesException() {
// Settings.Global#isValidZenMode is a blacklisted method. Resolving it should fail
try {
Settings.Global.class.getDeclaredMethod("isValidZenMode", Integer.TYPE);
return false;
} catch (NoSuchMethodException expected) {
return true;
}
}
}
@Test
public void spiesCannotBeUsedToCallHiddenMethods() {
CallBlackListedMethod t = spy(new CallBlackListedMethod());
assertTrue(t.callingBlacklistedMethodCausesException());
}
public static abstract class CallBlacklistedMethodAbstract {
@SuppressLint("PrivateApi")
public boolean callingBlacklistedMethodCausesException() {
// Settings.Global#isValidZenMode is a blacklisted method. Resolving it should fail
try {
Settings.Global.class.getDeclaredMethod("isValidZenMode", Integer.TYPE);
return false;
} catch (NoSuchMethodException expected) {
return true;
}
}
public abstract void unused();
}
@Test
public void mocksOfAbstractClassesCannotBeUsedToCallHiddenMethods() {
CallBlacklistedMethodAbstract t = mock(CallBlacklistedMethodAbstract.class);
doCallRealMethod().when(t).callingBlacklistedMethodCausesException();
assertTrue(t.callingBlacklistedMethodCausesException());
}
}
|
