1 /* 2 * Copyright (C) 2015 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 package android.databinding.testapp; 17 18 import android.databinding.BaseObservable; 19 import android.databinding.testapp.databinding.BasicBindingBinding; 20 21 import android.databinding.Observable; 22 import android.databinding.Observable.OnPropertyChangedCallback; 23 24 import java.util.ArrayList; 25 26 public class BaseObservableTest extends BaseDataBinderTest<BasicBindingBinding> { 27 private BaseObservable mObservable; 28 private ArrayList<Integer> mNotifications = new ArrayList<>(); 29 private OnPropertyChangedCallback mCallback = new OnPropertyChangedCallback() { 30 @Override 31 public void onPropertyChanged(Observable observable, int i) { 32 assertEquals(mObservable, observable); 33 mNotifications.add(i); 34 } 35 }; 36 37 public BaseObservableTest() { 38 super(BasicBindingBinding.class); 39 } 40 41 @Override 42 protected void setUp() throws Exception { 43 mNotifications.clear(); 44 mObservable = new BaseObservable(); 45 initBinder(null); 46 } 47 48 public void testAddCallback() { 49 mObservable.notifyChange(); 50 assertTrue(mNotifications.isEmpty()); 51 mObservable.addOnPropertyChangedCallback(mCallback); 52 mObservable.notifyChange(); 53 assertFalse(mNotifications.isEmpty()); 54 } 55 56 public void testRemoveCallback() { 57 // test there is no exception when the Callback isn't there 58 mObservable.removeOnPropertyChangedCallback(mCallback); 59 60 mObservable.addOnPropertyChangedCallback(mCallback); 61 mObservable.notifyChange(); 62 mNotifications.clear(); 63 mObservable.removeOnPropertyChangedCallback(mCallback); 64 mObservable.notifyChange(); 65 assertTrue(mNotifications.isEmpty()); 66 67 // test there is no exception when the Callback isn't there 68 mObservable.removeOnPropertyChangedCallback(mCallback); 69 } 70 71 public void testNotifyChange() { 72 mObservable.addOnPropertyChangedCallback(mCallback); 73 mObservable.notifyChange(); 74 assertEquals(1, mNotifications.size()); 75 assertEquals(0, (int) mNotifications.get(0)); 76 } 77 78 public void testNotifyPropertyChanged() { 79 final int expectedId = 100; 80 mObservable.addOnPropertyChangedCallback(mCallback); 81 mObservable.notifyPropertyChanged(expectedId); 82 assertEquals(1, mNotifications.size()); 83 assertEquals(expectedId, (int) mNotifications.get(0)); 84 } 85 } 86