Android example source code file (ListWithScreenOfNoSelectablesTest.java)

This example Android source code file (ListWithScreenOfNoSelectablesTest.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, largetest, listview, listwithscreenofnoselectablestest, mediumtest, override, test, ui, view, widget

The ListWithScreenOfNoSelectablesTest.java Android example source code

/*
 * Copyright (C) 2008 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.arrowscroll;

import android.widget.listview.ListWithScreenOfNoSelectables;

import android.test.ActivityInstrumentationTestCase;
import android.test.suitebuilder.annotation.LargeTest;
import android.test.suitebuilder.annotation.MediumTest;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ListView;

public class ListWithScreenOfNoSelectablesTest extends ActivityInstrumentationTestCase<ListWithScreenOfNoSelectables> {

    private ListView mListView;

    public ListWithScreenOfNoSelectablesTest() {
        super("com.android.frameworks.coretests", ListWithScreenOfNoSelectables.class);
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        mListView = getActivity().getListView();
    }

    @MediumTest
    public void testPreconditions() {
        assertTrue("expecting first position to be selectable",
                mListView.getAdapter().isEnabled(0));
        final int numItems = mListView.getCount();
        for (int i = 1; i < numItems; i++) {
            assertFalse("expecting item to be unselectable (index " + i +")",
                    mListView.getAdapter().isEnabled(i));
        }
        assertTrue("expecting that not all views fit on screen",
                mListView.getChildCount() < mListView.getCount());
    }


    @MediumTest
    public void testGoFromSelectedViewExistsToNoSelectedViewExists() {

        // go down untile first (and only selectable) item is off screen
        View first = mListView.getChildAt(0);
        while (first.getParent() != null) {
            sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
        }

        // nothing should be selected
        assertEquals("selected position", ListView.INVALID_POSITION, mListView.getSelectedItemPosition());
        assertNull("selected view", mListView.getSelectedView());
    }

    @LargeTest
    public void testPanDownAcrossUnselectableChildrenToBottom() {
        final int lastPosition = mListView.getCount() - 1;
        final int maxDowns = 20;
        for(int count = 0; count < maxDowns && mListView.getLastVisiblePosition() <= lastPosition; count++) {
            sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
        }
        assertEquals("last visible position not the last position in the list even "
                + "after " + maxDowns + " downs", lastPosition, mListView.getLastVisiblePosition());
    }

    @MediumTest
    public void testGoFromNoSelectionToSelectionExists() {
        // go down untile first (and only selectable) item is off screen
        View first = mListView.getChildAt(0);
        while (first.getParent() != null) {
            sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
        }

        // nothing should be selected
        assertEquals("selected position", ListView.INVALID_POSITION, mListView.getSelectedItemPosition());
        assertNull("selected view", mListView.getSelectedView());

        // go up once to bring the selectable back on screen
        sendKeys(KeyEvent.KEYCODE_DPAD_UP);
        assertEquals("first visible position", 0, mListView.getFirstVisiblePosition());
        assertEquals("selected position", ListView.INVALID_POSITION, mListView.getSelectedItemPosition());


        // up once more should give it selection
        sendKeys(KeyEvent.KEYCODE_DPAD_UP);
        assertEquals("selected position", 0, mListView.getSelectedItemPosition());

    }


}