Android example source code file (ListTouchBottomGravityManyTest.java)

This example Android source code file (ListTouchBottomGravityManyTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activityinstrumentationtestcase, android, exception, item, largetest, last, listbottomgravitymany, listtouchbottomgravitymanytest, listview, mediumtest, override, selection, test, too, ui, view, widget, wrong

The ListTouchBottomGravityManyTest.java Android example source code

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.widget.listview.touch;

import android.test.ActivityInstrumentationTestCase;
import android.test.suitebuilder.annotation.LargeTest;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.TouchUtils;
import android.view.Gravity;
import android.view.View;
import android.view.ViewConfiguration;
import android.widget.ListView;

import android.widget.listview.ListBottomGravityMany;

/**
 * Touch tests for a list where all of the items do not fit on the screen, and the list 
 * stacks from the bottom.
 */
public class ListTouchBottomGravityManyTest extends ActivityInstrumentationTestCase<ListBottomGravityMany> {
    private ListBottomGravityMany mActivity;
    private ListView mListView;

    public ListTouchBottomGravityManyTest() {
        super("com.android.frameworks.coretests", ListBottomGravityMany.class);
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        mActivity = getActivity();
        mListView = getActivity().getListView();
    }

    @MediumTest
    public void testPreconditions() {
        assertNotNull(mActivity);
        assertNotNull(mListView);
        
        // Last item should be selected
        assertEquals(mListView.getAdapter().getCount() - 1, mListView.getSelectedItemPosition());
    }
    
    @LargeTest
    public void testPullDown() {     
        int originalCount = mListView.getChildCount();
        
        TouchUtils.scrollToTop(this, mListView);
        
        // Nothing should be selected
        assertEquals("Selection still available after touch", -1, 
                mListView.getSelectedItemPosition());
        
        View firstChild = mListView.getChildAt(0);
        
        assertEquals("Item zero not the first child in the list", 0, firstChild.getId());
        
        assertEquals("Item zero not at the top of the list", mListView.getListPaddingTop(),
                firstChild.getTop());
        
        assertTrue(String.format("Too many children created: %d expected no more than %d", 
                mListView.getChildCount(), originalCount + 1), 
                mListView.getChildCount() <= originalCount + 1);
    }
    
    @MediumTest
    public void testPushUp() {
        TouchUtils.scrollToBottom(this, mListView);

        // Nothing should be selected
        assertEquals("Selection still available after touch", -1, 
                mListView.getSelectedItemPosition());

        View lastChild = mListView.getChildAt(mListView.getChildCount() - 1);

        assertEquals("List is not scrolled to the bottom", mListView.getAdapter().getCount() - 1,
                lastChild.getId());

        assertEquals("Last item is not touching the bottom edge", 
                mListView.getHeight() - mListView.getListPaddingBottom(), lastChild.getBottom());
    }
    
    @MediumTest
    public void testNoScroll() {
        View firstChild = mListView.getChildAt(0);
        View lastChild = mListView.getChildAt(mListView.getChildCount() - 1);
        
        int lastTop = lastChild.getTop();
        
        TouchUtils.dragViewBy(this, firstChild, Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL,
                0, ViewConfiguration.getTouchSlop());
        
        View newLastChild = mListView.getChildAt(mListView.getChildCount() - 1);
        
        assertEquals("View scrolled too early", lastTop, newLastChild.getTop());
        assertEquals("Wrong view in last position", mListView.getAdapter().getCount() - 1, 
                newLastChild.getId());
    }
    
    // TODO: needs to be adjusted to pass on non-HVGA displays
    // @LargeTest
    public void testShortScroll() {
        View firstChild = mListView.getChildAt(0);
        if (firstChild.getTop() < this.mListView.getListPaddingTop()) {
            firstChild = mListView.getChildAt(1);
        }
            
        View lastChild = mListView.getChildAt(mListView.getChildCount() - 1);
        
        int lastTop = lastChild.getTop();
        
        TouchUtils.dragViewBy(this, firstChild, Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL,
                0, ViewConfiguration.getTouchSlop() + 1 + 10);
        
        View newLastChild = mListView.getChildAt(mListView.getChildCount() - 1);
        
        assertEquals("View scrolled to wrong position", lastTop, newLastChild.getTop() - 10);
        assertEquals("Wrong view in last position", mListView.getAdapter().getCount() - 1,
                newLastChild.getId());
    }
    
    // TODO: needs to be adjusted to pass on non-HVGA displays
    // @LargeTest
    public void testLongScroll() {
        View firstChild = mListView.getChildAt(0);
        if (firstChild.getTop() < mListView.getListPaddingTop()) {
            firstChild = mListView.getChildAt(1);
        }

        int firstTop = firstChild.getTop();

        int distance = TouchUtils.dragViewBy(this, firstChild, 
                Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 
                (int)(mActivity.getWindowManager().getDefaultDisplay().getHeight() * 0.75f));
        
        assertEquals("View scrolled to wrong position", firstTop
                + (distance - ViewConfiguration.getTouchSlop() - 1), firstChild.getTop());
    } 

}