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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.ListOfItemsShorterThanScreen;
     26 
     27 public class ListOfItemsShorterThanScreenTest
     28         extends ActivityInstrumentationTestCase<ListOfItemsShorterThanScreen> {
     29     private ListView mListView;
     30     private ListOfItemsShorterThanScreen mActivity;
     31 
     32 
     33     public ListOfItemsShorterThanScreenTest() {
     34         super("com.android.frameworks.coretests", ListOfItemsShorterThanScreen.class);
     35     }
     36 
     37     protected void setUp() throws Exception {
     38         super.setUp();
     39         mActivity = getActivity();
     40         mListView = getActivity().getListView();
     41     }
     42 
     43     @MediumTest
     44     public void testPreconditions() {
     45         assertEquals(0, mListView.getSelectedItemPosition());
     46         assertTrue(mListView.getChildAt(0).isSelected());
     47         assertEquals(mListView.getListPaddingTop(), mListView.getSelectedView().getTop());
     48     }
     49 
     50     @MediumTest
     51     public void testMoveDownToOnScreenNextItem() {
     52         final View next = mListView.getChildAt(1);
     53         assertFalse(next.isSelected());
     54         final int secondPosition = mListView.getSelectedView().getBottom();
     55         assertEquals("second item should be positioned item height pixels from top.",
     56                 secondPosition,
     57                 next.getTop());
     58 
     59         sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
     60         assertEquals(1, mListView.getSelectedItemPosition());
     61         assertTrue(next.isSelected());
     62         assertEquals("next selected item shouldn't have moved",
     63                 secondPosition,
     64                 next.getTop());
     65     }
     66 
     67     @MediumTest
     68     public void testMoveUpToOnScreenItem() {
     69         // move down one, then back up
     70         sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
     71         sendKeys(KeyEvent.KEYCODE_DPAD_UP);
     72         assertEquals(0, mListView.getSelectedItemPosition());
     73     }
     74 
     75     @MediumTest
     76     public void testMoveDownToItemRequiringScrolling() {
     77         final int lastOnScreenItemIndex = mListView.getChildCount() - 1;
     78         final View lastItem = mListView.getChildAt(lastOnScreenItemIndex);
     79         assertTrue("last item should be partially off screen",
     80                 lastItem.getBottom() > mListView.getBottom());
     81         assertEquals(mListView.getListPaddingTop(), mListView.getSelectedView().getTop());
     82 
     83         for (int i = 0; i < lastOnScreenItemIndex; i++) {
     84             sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
     85         }
     86 
     87         assertEquals(lastOnScreenItemIndex, mListView.getSelectedItemPosition());
     88         assertEquals(
     89                 getTopOfBottomFadingEdge(),
     90                 mListView.getSelectedView().getBottom());
     91 
     92         // there should be a peeking view
     93 
     94         // the current view isn't the last anymore...
     95         assertEquals(mListView.getSelectedView(), mListView.getChildAt(mListView.getChildCount() - 2));
     96 
     97         // peeking view is now last
     98         final TextView view = (TextView) mListView.getChildAt(mListView.getChildCount() - 1);
     99         assertEquals(mActivity.getValueAtPosition(lastOnScreenItemIndex + 1), view.getText());
    100         assertFalse(view.isSelected());
    101     }
    102 
    103     @MediumTest
    104     public void testMoveUpToItemRequiringScrolling() {
    105         // go down to one past last item, then back up to the second item.  this will
    106         // require scrolling to get it back on screen, and will need a peeking edge
    107 
    108         int numItemsOnScreen = mListView.getChildCount();
    109         for (int i = 0; i < numItemsOnScreen; i++) {
    110             sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
    111         }
    112         for (int i = 0; i < numItemsOnScreen - 1; i++) {
    113             sendKeys(KeyEvent.KEYCODE_DPAD_UP);
    114         }
    115 
    116         assertEquals(1, mListView.getSelectedItemPosition());
    117         assertEquals("top should be just below vertical fading edge",
    118                 mListView.getVerticalFadingEdgeLength() + mListView.getListPaddingTop(),
    119                 mListView.getSelectedView().getTop());
    120     }
    121 
    122     @MediumTest
    123     public void testPressUpWhenAlreadyAtTop() {
    124         sendKeys(KeyEvent.KEYCODE_DPAD_UP);
    125 
    126         assertEquals(0, mListView.getSelectedItemPosition());
    127     }
    128 
    129     @MediumTest
    130     public void testPressDownWhenAlreadyAtBottom() {
    131         final int lastItemPosition = mListView.getAdapter().getCount() - 1;
    132         for (int i = 0; i < lastItemPosition; i++) {
    133             sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
    134         }
    135         assertEquals(lastItemPosition, mListView.getSelectedItemPosition());
    136 
    137         sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
    138         assertEquals(lastItemPosition, mListView.getSelectedItemPosition());
    139     }
    140 
    141     @MediumTest
    142     public void testNoVerticalFadingEdgeWhenMovingToBottom() {
    143         final int lastItemPosition = mListView.getAdapter().getCount() - 1;
    144         for (int i = 0; i < lastItemPosition; i++) {
    145             sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
    146         }
    147         assertEquals(lastItemPosition, mListView.getSelectedItemPosition());
    148 
    149         assertEquals("bottom of last item should be just above padding; no fading edge.",
    150                 mListView.getHeight() - mListView.getListPaddingBottom(),
    151                 mListView.getSelectedView().getBottom());
    152 
    153     }
    154 
    155     // the top of the bottom fading edge takes into account the list padding at the bottom,
    156     // and the fading edge size
    157     private int getTopOfBottomFadingEdge() {
    158         return mListView.getHeight() - (mListView.getVerticalFadingEdgeLength() + mListView.getListPaddingBottom());
    159     }
    160 
    161 
    162 }
    163