IsolatedContext.java revision 10362ab9d67d87c0c3217e804e64d3e7038211df 
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
17package android.test;
18
19import com.google.android.collect.Lists;
20
21import android.accounts.AccountManager;
22import android.accounts.AccountManagerCallback;
23import android.accounts.AccountManagerFuture;
24import android.accounts.AuthenticatorException;
25import android.accounts.OnAccountsUpdateListener;
26import android.accounts.OperationCanceledException;
27import android.accounts.Account;
28import android.content.ContextWrapper;
29import android.content.ContentResolver;
30import android.content.Intent;
31import android.content.Context;
32import android.content.ServiceConnection;
33import android.content.BroadcastReceiver;
34import android.content.IntentFilter;
35import android.content.pm.PackageManager;
36import android.net.Uri;
37import android.os.Handler;
38
39import java.io.File;
40import java.io.IOException;
41import java.util.concurrent.TimeUnit;
42import java.util.concurrent.ExecutionException;
43import java.util.concurrent.TimeoutException;
44import java.util.List;
45
46
47/**
48     * A mock context which prevents its users from talking to the rest of the device while
49 * stubbing enough methods to satify code that tries to talk to other packages.
50 */
51public class IsolatedContext extends ContextWrapper {
52
53    private ContentResolver mResolver;
54    private final MockAccountManager mMockAccountManager;
55
56    private List<Intent> mBroadcastIntents = Lists.newArrayList();
57
58    public IsolatedContext(
59            ContentResolver resolver, Context targetContext) {
60        super(targetContext);
61        mResolver = resolver;
62        mMockAccountManager = new MockAccountManager();
63    }
64
65    /** Returns the list of intents that were broadcast since the last call to this method. */
66    public List<Intent> getAndClearBroadcastIntents() {
67        List<Intent> intents = mBroadcastIntents;
68        mBroadcastIntents = Lists.newArrayList();
69        return intents;
70    }
71
72    @Override
73    public ContentResolver getContentResolver() {
74        // We need to return the real resolver so that MailEngine.makeRight can get to the
75        // subscribed feeds provider. TODO: mock out subscribed feeds too.
76        return mResolver;
77    }
78
79    @Override
80    public boolean bindService(Intent service, ServiceConnection conn, int flags) {
81        return false;
82    }
83
84    @Override
85    public Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter) {
86        return null;
87    }
88
89    @Override
90    public void sendBroadcast(Intent intent) {
91        mBroadcastIntents.add(intent);
92    }
93
94    @Override
95    public void sendOrderedBroadcast(Intent intent, String receiverPermission) {
96        mBroadcastIntents.add(intent);
97    }
98
99    @Override
100    public int checkUriPermission(
101            Uri uri, String readPermission, String writePermission, int pid,
102            int uid, int modeFlags) {
103        return PackageManager.PERMISSION_GRANTED;
104    }
105
106    @Override
107    public int checkUriPermission(Uri uri, int pid, int uid, int modeFlags) {
108        return PackageManager.PERMISSION_GRANTED;
109    }
110
111    @Override
112    public Object getSystemService(String name) {
113        if (Context.ACCOUNT_SERVICE.equals(name)) {
114            return mMockAccountManager;
115        }
116        // No other services exist in this context.
117        return null;
118    }
119
120    private class MockAccountManager extends AccountManager {
121        public MockAccountManager() {
122            super(IsolatedContext.this, null /* IAccountManager */, null /* handler */);
123        }
124
125        public void addOnAccountsUpdatedListener(OnAccountsUpdateListener listener,
126                Handler handler, boolean updateImmediately) {
127            // do nothing
128        }
129
130        public Account[] getAccounts() {
131            return new Account[]{};
132        }
133
134        public AccountManagerFuture<Account[]> getAccountsByTypeAndFeatures(
135                final String type, final String[] features,
136                AccountManagerCallback<Account[]> callback, Handler handler) {
137            return new MockAccountManagerFuture<Account[]>(new Account[0]);
138        }
139
140        public String blockingGetAuthToken(Account account, String authTokenType,
141                boolean notifyAuthFailure)
142                throws OperationCanceledException, IOException, AuthenticatorException {
143            return null;
144        }
145
146
147        /**
148         * A very simple AccountManagerFuture class
149         * that returns what ever was passed in
150         */
151        private class MockAccountManagerFuture<T>
152                implements AccountManagerFuture<T> {
153
154            T mResult;
155
156            public MockAccountManagerFuture(T result) {
157                mResult = result;
158            }
159
160            public boolean cancel(boolean mayInterruptIfRunning) {
161                return false;
162            }
163
164            public boolean isCancelled() {
165                return false;
166            }
167
168            public boolean isDone() {
169                return true;
170            }
171
172            public T getResult()
173                    throws OperationCanceledException, IOException, AuthenticatorException {
174                return mResult;
175            }
176
177            public T getResult(long timeout, TimeUnit unit)
178                    throws OperationCanceledException, IOException, AuthenticatorException {
179                return getResult();
180            }
181        }
182
183    }
184
185    @Override
186    public File getFilesDir() {
187        return new File("/dev/null");
188    }
189}
190