Android example source code file (ExpandableListBasicTest.java)

This example Android source code file (ExpandableListBasicTest.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

activityinstrumentationtestcase2, android, baseexpandablelistadapter, could, expandablelistbasictest, expandablelistscenario, expandablelisttester, expandablelistview, group, listutil, mediumtest, mygroup, override, runnable, test, the, ui, util, utilities, widget

The ExpandableListBasicTest.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.expandablelistview;

import android.test.ActivityInstrumentationTestCase2;
import android.test.suitebuilder.annotation.MediumTest;
import android.util.ExpandableListScenario;
import android.util.ListUtil;
import android.util.ExpandableListScenario.MyGroup;
import android.view.KeyEvent;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;

import java.util.List;

public class ExpandableListBasicTest extends ActivityInstrumentationTestCase2<ExpandableListSimple> {
    private ExpandableListScenario mActivity;
    private ExpandableListView mExpandableListView;
    private ExpandableListAdapter mAdapter;
    private ListUtil mListUtil;
    
    public ExpandableListBasicTest() {
        super(ExpandableListSimple.class);
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        
        mActivity = getActivity();
        mExpandableListView = mActivity.getExpandableListView();
        mAdapter = mExpandableListView.getExpandableListAdapter();
        mListUtil = new ListUtil(mExpandableListView, getInstrumentation());
    }
    
    @MediumTest
    public void testPreconditions() {
        assertNotNull(mActivity);
        assertNotNull(mExpandableListView);
    }
    
    private int expandGroup(int numChildren, boolean atLeastOneChild) {
        final int groupPos = mActivity.findGroupWithNumChildren(numChildren, atLeastOneChild);
        assertTrue("Could not find group to expand", groupPos >= 0);

        assertFalse("Group is already expanded", mExpandableListView.isGroupExpanded(groupPos));
        mListUtil.arrowScrollToSelectedPosition(groupPos);
        getInstrumentation().waitForIdleSync();
        sendKeys(KeyEvent.KEYCODE_DPAD_CENTER);
        getInstrumentation().waitForIdleSync();
        assertTrue("Group did not expand", mExpandableListView.isGroupExpanded(groupPos));

        return groupPos;
    }

    @MediumTest
    public void testExpandGroup() {
        expandGroup(-1, true);
    }
    
    @MediumTest
    public void testCollapseGroup() {
        final int groupPos = expandGroup(-1, true);
        
        sendKeys(KeyEvent.KEYCODE_DPAD_CENTER);
        getInstrumentation().waitForIdleSync();
        assertFalse("Group did not collapse", mExpandableListView.isGroupExpanded(groupPos));
    }
    
    @MediumTest
    public void testExpandedGroupMovement() {
        // Expand the first group
        mListUtil.arrowScrollToSelectedPosition(0);
        sendKeys(KeyEvent.KEYCODE_DPAD_CENTER);
        getInstrumentation().waitForIdleSync();

        // Ensure it expanded
        assertTrue("Group did not expand", mExpandableListView.isGroupExpanded(0));
        
        // Wait until that's all good
        getInstrumentation().waitForIdleSync();
        
        // Make sure it expanded
        assertTrue("Group did not expand", mExpandableListView.isGroupExpanded(0));
        
        // Insert a collapsed group in front of the one just expanded
        List<MyGroup> groups = mActivity.getGroups();
        MyGroup insertedGroup = new MyGroup(1);
        groups.add(0, insertedGroup);
        
        // Notify data change
        assertTrue("Adapter is not an instance of the base adapter",
                mAdapter instanceof BaseExpandableListAdapter);
        final BaseExpandableListAdapter adapter = (BaseExpandableListAdapter) mAdapter;
     
        mActivity.runOnUiThread(new Runnable() {
            public void run() {
                adapter.notifyDataSetChanged();
            }
        });
        getInstrumentation().waitForIdleSync();
        
        // Make sure the right group is expanded
        assertTrue("The expanded state didn't stay with the proper group",
                mExpandableListView.isGroupExpanded(1));
        assertFalse("The expanded state was given to the inserted group",
                mExpandableListView.isGroupExpanded(0));
    }

    @MediumTest
    public void testContextMenus() {
        ExpandableListTester tester = new ExpandableListTester(mExpandableListView, this);
        tester.testContextMenus();
    }

    @MediumTest
    public void testConvertionBetweenFlatAndPacked() {
        ExpandableListTester tester = new ExpandableListTester(mExpandableListView, this);
        tester.testConvertionBetweenFlatAndPackedOnGroups();
        tester.testConvertionBetweenFlatAndPackedOnChildren();
    }

    @MediumTest
    public void testSelectedPosition() {
        ExpandableListTester tester = new ExpandableListTester(mExpandableListView, this);
        tester.testSelectedPositionOnGroups();
        tester.testSelectedPositionOnChildren();
    }
}