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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;
     18 
     19 import android.test.ActivityInstrumentationTestCase2;
     20 import android.test.UiThreadTest;
     21 import android.test.suitebuilder.annotation.MediumTest;
     22 import android.widget.ListView;
     23 
     24 /**
     25  * Basic tests of setting & clearing the selection
     26  */
     27 public class ListSetSelectionTest extends ActivityInstrumentationTestCase2<ListSimple> {
     28     private ListSimple mActivity;
     29     private ListView mListView;
     30 
     31     public ListSetSelectionTest() {
     32         super("com.android.frameworks.coretests", ListSimple.class);
     33     }
     34 
     35     @Override
     36     protected void setUp() throws Exception {
     37         super.setUp();
     38 
     39         mActivity = getActivity();
     40         mListView = getActivity().getListView();
     41     }
     42 
     43     @MediumTest
     44     public void testPreconditions() {
     45         assertNotNull(mActivity);
     46         assertNotNull(mListView);
     47     }
     48 
     49     /** Confirm that we can set the selection to each specific position */
     50     @MediumTest
     51     @UiThreadTest
     52     public void testSetSelection() {
     53         // Set the selection to each position
     54         int childCount = mListView.getChildCount();
     55         for (int i=0; i<childCount; i++) {
     56             mListView.setSelection(i);
     57             assertEquals("Set selection", i, mListView.getSelectedItemPosition());
     58         }
     59     }
     60 
     61     /** Confirm that you cannot unset the selection using the same API */
     62     @MediumTest
     63     @UiThreadTest
     64     public void testClearSelection() {
     65         // Set the selection to first position
     66         mListView.setSelection(0);
     67         assertEquals("Set selection", 0, mListView.getSelectedItemPosition());
     68 
     69         // Clear the selection
     70         mListView.setSelection(ListView.INVALID_POSITION);
     71         assertEquals("Set selection", 0, mListView.getSelectedItemPosition());
     72     }
     73 }
     74