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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;
     18 
     19 import android.graphics.Rect;
     20 import android.test.ActivityInstrumentationTestCase;
     21 import android.test.suitebuilder.annotation.LargeTest;
     22 import android.test.suitebuilder.annotation.MediumTest;
     23 import android.view.View;
     24 import android.view.KeyEvent;
     25 import android.widget.ListView;
     26 import android.widget.listview.ListOfThinItems;
     27 
     28 public class ListItemRequestRectAboveThinFirstItemTest
     29         extends ActivityInstrumentationTestCase<ListOfThinItems> {
     30     private ListView mListView;
     31 
     32     public ListItemRequestRectAboveThinFirstItemTest() {
     33         super("com.android.frameworks.coretests", ListOfThinItems.class);
     34     }
     35 
     36     protected void setUp() throws Exception {
     37         super.setUp();
     38         mListView = getActivity().getListView();
     39     }
     40 
     41     @MediumTest
     42     public void testPreconditions() {
     43 
     44         assertTrue("first child needs to be within fading edge height",
     45                 mListView.getChildAt(0).getBottom() < mListView.getVerticalFadingEdgeLength());
     46         assertTrue("should be at least two visible children",
     47                 mListView.getChildCount() >= 2);
     48     }
     49 
     50     // reproduce bug 998501: when first item fits within fading edge,
     51     // having the second item call requestRectangleOnScreen with a rect above
     52     // the bounds of the list, it was scrolling too far
     53     @MediumTest
     54     public void testSecondItemRequestRectAboveTop() throws Exception {
     55 
     56         sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
     57         assertEquals("selected position", 1, mListView.getSelectedItemPosition());
     58 
     59         final View second = mListView.getChildAt(1);
     60         final Rect rect = new Rect();
     61         second.getDrawingRect(rect);
     62         rect.offset(0, -2 * second.getBottom());
     63 
     64         getActivity().requestRectangleOnScreen(1, rect);
     65         getInstrumentation().waitForIdleSync();
     66 
     67         assertEquals("top of first item",
     68                 mListView.getListPaddingTop(), mListView.getChildAt(0).getTop());
     69 
     70     }
     71 
     72     // same thing, but at bottom
     73     @LargeTest
     74     public void testSecondToLastItemRequestRectBelowBottom() throws Exception {
     75 
     76         final int secondToLastPos = mListView.getCount() - 2;
     77 
     78         while (mListView.getSelectedItemPosition() < secondToLastPos) {
     79             sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
     80         }
     81         assertEquals("selected position", secondToLastPos,
     82                 mListView.getSelectedItemPosition());
     83 
     84         final View secondToLast = mListView.getSelectedView();
     85         final Rect rect = new Rect();
     86         secondToLast.getDrawingRect(rect);
     87         rect.offset(0,
     88                 2 * (mListView.getBottom() - secondToLast.getTop()));
     89 
     90         final int secondToLastIndex = mListView.getChildCount() - 2;
     91         getActivity().requestRectangleOnScreen(secondToLastIndex, rect);
     92         getInstrumentation().waitForIdleSync();
     93 
     94         int listBottom = mListView.getHeight() - mListView.getPaddingBottom();
     95         assertEquals("bottom of last item should be at bottom of list",
     96                 listBottom,
     97                 mListView.getChildAt(mListView.getChildCount() - 1).getBottom());
     98     }
     99 
    100 
    101 
    102 }
    103