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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 com.android.setupwizardlib.template;
     18 
     19 import static org.mockito.Matchers.anyInt;
     20 import static org.mockito.Matchers.eq;
     21 import static org.mockito.Mockito.doNothing;
     22 import static org.mockito.Mockito.doReturn;
     23 import static org.mockito.Mockito.spy;
     24 import static org.mockito.Mockito.verify;
     25 import static org.robolectric.RuntimeEnvironment.application;
     26 
     27 import android.content.Context;
     28 import android.view.View;
     29 import android.view.ViewGroup;
     30 import android.widget.AbsListView.OnScrollListener;
     31 import android.widget.BaseAdapter;
     32 import android.widget.ListView;
     33 
     34 import com.android.setupwizardlib.BuildConfig;
     35 import com.android.setupwizardlib.robolectric.SuwLibRobolectricTestRunner;
     36 
     37 import org.junit.Before;
     38 import org.junit.Test;
     39 import org.junit.runner.RunWith;
     40 import org.mockito.ArgumentCaptor;
     41 import org.mockito.Mock;
     42 import org.mockito.MockitoAnnotations;
     43 import org.robolectric.annotation.Config;
     44 
     45 @Config(constants = BuildConfig.class, sdk = { Config.OLDEST_SDK, Config.NEWEST_SDK })
     46 @RunWith(SuwLibRobolectricTestRunner.class)
     47 public class ListViewScrollHandlingDelegateTest {
     48 
     49     @Mock
     50     private RequireScrollMixin mRequireScrollMixin;
     51 
     52     private ListView mListView;
     53     private ListViewScrollHandlingDelegate mDelegate;
     54     private ArgumentCaptor<OnScrollListener> mListenerCaptor;
     55 
     56     @Before
     57     public void setUp() throws Exception {
     58         MockitoAnnotations.initMocks(this);
     59 
     60         mListView = spy(new TestListView(application));
     61         mDelegate = new ListViewScrollHandlingDelegate(mRequireScrollMixin, mListView);
     62 
     63         mListenerCaptor = ArgumentCaptor.forClass(OnScrollListener.class);
     64         doNothing().when(mListView).setOnScrollListener(mListenerCaptor.capture());
     65 
     66         mListView.layout(0, 0, 50, 50);
     67     }
     68 
     69     @Test
     70     public void testRequireScroll() throws Throwable {
     71         mDelegate.startListening();
     72 
     73         verify(mRequireScrollMixin).notifyScrollabilityChange(true);
     74     }
     75 
     76     @Test
     77     public void testScrolledToBottom() throws Throwable {
     78         mDelegate.startListening();
     79 
     80         verify(mRequireScrollMixin).notifyScrollabilityChange(true);
     81 
     82         doReturn(20).when(mListView).getLastVisiblePosition();
     83         mListenerCaptor.getValue().onScroll(mListView, 2, 20, 20);
     84 
     85         verify(mRequireScrollMixin).notifyScrollabilityChange(false);
     86     }
     87 
     88     @Test
     89     public void testPageScrollDown() throws Throwable {
     90         mDelegate.pageScrollDown();
     91         verify(mListView).smoothScrollBy(eq(50), anyInt());
     92     }
     93 
     94     private static class TestListView extends ListView {
     95 
     96         TestListView(Context context) {
     97             super(context);
     98             setAdapter(new BaseAdapter() {
     99                 @Override
    100                 public int getCount() {
    101                     return 20;
    102                 }
    103 
    104                 @Override
    105                 public Object getItem(int position) {
    106                     return null;
    107                 }
    108 
    109                 @Override
    110                 public long getItemId(int position) {
    111                     return position;
    112                 }
    113 
    114                 @Override
    115                 public View getView(int position, View convertView, ViewGroup parent) {
    116                     return new View(parent.getContext());
    117                 }
    118             });
    119         }
    120     }
    121 }
    122