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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.gridview.touch;
     18 
     19 import android.test.ActivityInstrumentationTestCase;
     20 import android.test.suitebuilder.annotation.LargeTest;
     21 import android.test.suitebuilder.annotation.MediumTest;
     22 import android.test.TouchUtils;
     23 import android.view.Gravity;
     24 import android.view.View;
     25 import android.view.ViewConfiguration;
     26 import android.widget.GridView;
     27 
     28 import android.widget.gridview.GridVerticalSpacing;
     29 
     30 public class GridTouchVerticalSpacingTest extends ActivityInstrumentationTestCase<GridVerticalSpacing> {
     31     private GridVerticalSpacing mActivity;
     32     private GridView mGridView;
     33 
     34     public GridTouchVerticalSpacingTest() {
     35         super("com.android.frameworks.coretests", GridVerticalSpacing.class);
     36     }
     37 
     38     @Override
     39     protected void setUp() throws Exception {
     40         super.setUp();
     41 
     42         mActivity = getActivity();
     43         mGridView = getActivity().getGridView();
     44     }
     45 
     46     @MediumTest
     47     public void testPreconditions() {
     48         assertNotNull(mActivity);
     49         assertNotNull(mGridView);
     50 
     51         assertEquals(0, mGridView.getSelectedItemPosition());
     52     }
     53 
     54     @MediumTest
     55     public void testNoScroll() {
     56         View firstChild = mGridView.getChildAt(0);
     57         View lastChild = mGridView.getChildAt(mGridView.getChildCount() - 1);
     58 
     59         int firstTop = firstChild.getTop();
     60 
     61         TouchUtils.dragViewBy(this, lastChild, Gravity.TOP | Gravity.LEFT,
     62                 0, -(ViewConfiguration.getTouchSlop()));
     63 
     64         View newFirstChild = mGridView.getChildAt(0);
     65 
     66         assertEquals("View scrolled too early", firstTop, newFirstChild.getTop());
     67         assertEquals("Wrong view in first position", 0, newFirstChild.getId());
     68     }
     69 
     70     // TODO: needs to be adjusted to pass on non-HVGA displays
     71     // @LargeTest
     72     public void testShortScroll() {
     73         View firstChild = mGridView.getChildAt(0);
     74         View lastChild = mGridView.getChildAt(mGridView.getChildCount() - 1);
     75 
     76         int firstTop = firstChild.getTop();
     77 
     78         TouchUtils.dragViewBy(this, lastChild, Gravity.TOP | Gravity.LEFT,
     79                 0, -(ViewConfiguration.getTouchSlop() + 1 + 10));
     80 
     81         View newFirstChild = mGridView.getChildAt(0);
     82 
     83         assertEquals("View scrolled to wrong position", firstTop, newFirstChild.getTop() + 10);
     84         assertEquals("Wrong view in first position", 0, newFirstChild.getId());
     85     }
     86 
     87     // TODO: needs to be adjusted to pass on non-HVGA displays
     88     // @LargeTest
     89     public void testLongScroll() {
     90         View lastChild = mGridView.getChildAt(mGridView.getChildCount() - 1);
     91 
     92         int lastTop = lastChild.getTop();
     93 
     94         int distance = TouchUtils.dragViewToY(this, lastChild, Gravity.TOP | Gravity.LEFT,
     95                 mGridView.getTop());
     96 
     97         assertEquals("View scrolled to wrong position",
     98                 lastTop - (distance - ViewConfiguration.getTouchSlop() - 1), lastChild.getTop());
     99     }
    100 
    101     @LargeTest
    102     public void testManyScrolls() {
    103         int originalCount = mGridView.getChildCount();
    104 
    105         View firstChild;
    106         int firstId = Integer.MIN_VALUE;
    107         int firstTop = Integer.MIN_VALUE;
    108         int prevId;
    109         int prevTop;
    110         do {
    111             prevId = firstId;
    112             prevTop = firstTop;
    113             TouchUtils.dragQuarterScreenUp(this);
    114             assertTrue(String.format("Too many children created: %d expected no more than %d",
    115                     mGridView.getChildCount(), originalCount + 4),
    116                     mGridView.getChildCount() <= originalCount + 4);
    117             firstChild = mGridView.getChildAt(0);
    118             firstId = firstChild.getId();
    119             firstTop = firstChild.getTop();
    120         } while ((prevId != firstId) || (prevTop != firstTop));
    121 
    122 
    123         View lastChild = mGridView.getChildAt(mGridView.getChildCount() - 1);
    124         assertEquals("Grid is not scrolled to the bottom", mGridView.getAdapter().getCount() - 1,
    125                 lastChild.getId());
    126 
    127         firstId = Integer.MIN_VALUE;
    128         firstTop = Integer.MIN_VALUE;
    129         do {
    130             prevId = firstId;
    131             prevTop = firstTop;
    132             TouchUtils.dragQuarterScreenDown(this);
    133             assertTrue(String.format("Too many children created: %d expected no more than %d",
    134                     mGridView.getChildCount(), originalCount + 4),
    135                     mGridView.getChildCount() <= originalCount + 4);
    136             firstChild = mGridView.getChildAt(0);
    137             firstId = firstChild.getId();
    138             firstTop = firstChild.getTop();
    139         } while ((prevId != firstId) || (prevTop != firstTop));
    140 
    141         firstChild = mGridView.getChildAt(0);
    142         assertEquals("Grid is not scrolled to the top", 0, firstChild.getId());
    143     }
    144 }
    145