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      1 /*
      2  * Copyright (C) 2007 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.widget.listview.arrowscroll;
     18 
     19 import android.test.ActivityInstrumentationTestCase;
     20 import android.test.suitebuilder.annotation.MediumTest;
     21 import android.view.KeyEvent;
     22 import android.view.View;
     23 import android.widget.ListView;
     24 import android.widget.TextView;
     25 import android.widget.listview.ListWithOffScreenNextSelectable;
     26 
     27 public class ListWithOffScreenNextSelectableTest
     28         extends ActivityInstrumentationTestCase<ListWithOffScreenNextSelectable> {
     29     private ListView mListView;
     30 
     31     public ListWithOffScreenNextSelectableTest() {
     32         super("com.android.frameworks.coretests", ListWithOffScreenNextSelectable.class);
     33     }
     34 
     35     @Override
     36     protected void setUp() throws Exception {
     37         super.setUp();
     38 
     39         mListView = getActivity().getListView();
     40     }
     41 
     42     @MediumTest
     43     public void testPreconditions() {
     44         assertNotNull(mListView);
     45         assertEquals(5, mListView.getAdapter().getCount());
     46         assertFalse(mListView.getAdapter().areAllItemsEnabled());
     47         assertFalse(mListView.getAdapter().isEnabled(1));
     48         assertFalse(mListView.getAdapter().isEnabled(2));
     49         assertFalse(mListView.getAdapter().isEnabled(3));
     50         assertEquals("only 4 children should be on screen (so that next selectable is off " +
     51                 "screen) for this test to be meaningful.",
     52                 4, mListView.getChildCount());
     53         assertEquals(0, mListView.getSelectedItemPosition());
     54     }
     55 
     56     // when the next items on screen are not selectable, we pan until the next selectable item
     57     // is (partially visible), then we jump to it
     58     @MediumTest
     59     public void testGoDownToOffScreenSelectable() {
     60 
     61         final int listBottom = mListView.getHeight() - mListView.getListPaddingBottom();
     62 
     63         final View lastVisibleView = mListView.getChildAt(mListView.getChildCount() - 1);
     64         sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
     65         assertEquals("expecting view to be panned to just above fading edge",
     66                 listBottom - mListView.getVerticalFadingEdgeLength(), lastVisibleView.getBottom());
     67         assertEquals("selection should not have moved yet",
     68                 0, mListView.getSelectedItemPosition());
     69 
     70         sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
     71         assertEquals("selection should have moved",
     72                 4, mListView.getSelectedItemPosition());
     73         assertEquals("wrong view created when scrolling",
     74                 getActivity().getValueAtPosition(4), ((TextView) mListView.getSelectedView()).getText());
     75         assertEquals(listBottom, mListView.getSelectedView().getBottom());
     76     }
     77 
     78     @MediumTest
     79     public void testGoUpToOffScreenSelectable() {
     80         final int listBottom = mListView.getHeight() - mListView.getListPaddingBottom();
     81         final int listTop = mListView.getListPaddingTop();
     82 
     83         sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
     84         sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
     85 
     86         assertEquals(4, mListView.getSelectedItemPosition());
     87         assertEquals(listBottom, mListView.getSelectedView().getBottom());
     88 
     89         // now we have the reverse situation: the next selectable position upward is off screen
     90         final View firstVisibleView = mListView.getChildAt(0);
     91         sendKeys(KeyEvent.KEYCODE_DPAD_UP);
     92         assertEquals("should have panned top view just below vertical fading edge",
     93                 listTop + mListView.getVerticalFadingEdgeLength(), firstVisibleView.getTop());
     94         assertEquals("selection should not have moved yet",
     95                 4, mListView.getSelectedItemPosition());
     96 
     97         sendKeys(KeyEvent.KEYCODE_DPAD_UP);
     98         assertEquals("selection should have moved",
     99                 0, mListView.getSelectedItemPosition());
    100         assertEquals(getActivity().getValueAtPosition(0),((TextView) mListView.getSelectedView()).getText());
    101         assertEquals(listTop, mListView.getSelectedView().getTop());
    102 
    103     }
    104 
    105 }
    106