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      1 /*
      2  * Copyright (C) 2017 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 android.net.util;
     18 
     19 import static org.junit.Assert.assertEquals;
     20 import static org.mockito.Mockito.reset;
     21 
     22 import android.content.Context;
     23 import android.content.Intent;
     24 import android.content.IntentFilter;
     25 import android.os.Handler;
     26 import android.os.Looper;
     27 import android.os.UserHandle;
     28 
     29 import android.support.test.filters.SmallTest;
     30 import android.support.test.runner.AndroidJUnit4;
     31 
     32 import com.android.internal.util.test.BroadcastInterceptingContext;
     33 
     34 import org.junit.After;
     35 import org.junit.Before;
     36 import org.junit.BeforeClass;
     37 import org.junit.runner.RunWith;
     38 import org.junit.Test;
     39 import org.mockito.Mock;
     40 import org.mockito.Mockito;
     41 import org.mockito.MockitoAnnotations;
     42 
     43 
     44 @RunWith(AndroidJUnit4.class)
     45 @SmallTest
     46 public class VersionedBroadcastListenerTest {
     47     private static final String TAG = VersionedBroadcastListenerTest.class.getSimpleName();
     48     private static final String ACTION_TEST = "action.test.happy.broadcasts";
     49 
     50     @Mock private Context mContext;
     51     private BroadcastInterceptingContext mServiceContext;
     52     private Handler mHandler;
     53     private VersionedBroadcastListener mListener;
     54     private int mCallbackCount;
     55 
     56     private void doCallback() { mCallbackCount++; }
     57 
     58     private class MockContext extends BroadcastInterceptingContext {
     59         MockContext(Context base) {
     60             super(base);
     61         }
     62     }
     63 
     64     @BeforeClass
     65     public static void setUpBeforeClass() throws Exception {
     66         if (Looper.myLooper() == null) {
     67             Looper.prepare();
     68         }
     69     }
     70 
     71     @Before public void setUp() throws Exception {
     72         MockitoAnnotations.initMocks(this);
     73         reset(mContext);
     74         mServiceContext = new MockContext(mContext);
     75         mHandler = new Handler(Looper.myLooper());
     76         mCallbackCount = 0;
     77         final IntentFilter filter = new IntentFilter();
     78         filter.addAction(ACTION_TEST);
     79         mListener = new VersionedBroadcastListener(
     80                 TAG, mServiceContext, mHandler, filter, (Intent intent) -> doCallback());
     81     }
     82 
     83     @After public void tearDown() throws Exception {
     84         if (mListener != null) {
     85             mListener.stopListening();
     86             mListener = null;
     87         }
     88     }
     89 
     90     private void sendBroadcast() {
     91         final Intent intent = new Intent(ACTION_TEST);
     92         mServiceContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
     93     }
     94 
     95     @Test
     96     public void testBasicListening() {
     97         assertEquals(0, mCallbackCount);
     98         mListener.startListening();
     99         for (int i = 0; i < 5; i++) {
    100             sendBroadcast();
    101             assertEquals(i+1, mCallbackCount);
    102         }
    103         mListener.stopListening();
    104     }
    105 
    106     @Test
    107     public void testBroadcastsBeforeStartAreIgnored() {
    108         assertEquals(0, mCallbackCount);
    109         for (int i = 0; i < 5; i++) {
    110             sendBroadcast();
    111             assertEquals(0, mCallbackCount);
    112         }
    113 
    114         mListener.startListening();
    115         sendBroadcast();
    116         assertEquals(1, mCallbackCount);
    117     }
    118 
    119     @Test
    120     public void testBroadcastsAfterStopAreIgnored() {
    121         mListener.startListening();
    122         sendBroadcast();
    123         assertEquals(1, mCallbackCount);
    124         mListener.stopListening();
    125 
    126         for (int i = 0; i < 5; i++) {
    127             sendBroadcast();
    128             assertEquals(1, mCallbackCount);
    129         }
    130     }
    131 }
    132