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.arrowscroll; 18 19 import android.test.ActivityInstrumentationTestCase; 20 import android.test.suitebuilder.annotation.LargeTest; 21 import android.test.suitebuilder.annotation.MediumTest; 22 import android.test.suitebuilder.annotation.Suppress; 23 import android.view.KeyEvent; 24 import android.view.View; 25 import android.widget.ListView; 26 import android.widget.listview.ListOfThinItems; 27 28 public class ListOfThinItemsTest extends ActivityInstrumentationTestCase<ListOfThinItems> { 29 private ListView mListView; 30 31 public ListOfThinItemsTest() { 32 super("com.android.frameworks.coretests", ListOfThinItems.class); 33 } 34 35 @Override 36 protected void setUp() throws Exception{ 37 super.setUp(); 38 mListView = getActivity().getListView(); 39 } 40 41 @MediumTest 42 @Suppress // Failing. 43 public void testPreconditions() { 44 assertNotNull(mListView); 45 assertTrue("need item height less than fading edge length", 46 mListView.getSelectedView().getHeight() < mListView.getVerticalFadingEdgeLength()); 47 assertTrue("need items off screen", 48 mListView.getChildCount() < mListView.getAdapter().getCount()); 49 } 50 51 @LargeTest 52 public void testScrollToBottom() { 53 final int numItems = mListView.getAdapter().getCount(); 54 final int listBottom = mListView.getHeight() - mListView.getListPaddingBottom(); 55 for (int i = 0; i < numItems; i++) { 56 assertEquals("wrong selection at position " + i, 57 i, mListView.getSelectedItemPosition()); 58 final int bottomFadingEdge = listBottom - mListView.getVerticalFadingEdgeLength(); 59 final View lastChild = mListView.getChildAt(mListView.getChildCount() - 1); 60 final int lastVisiblePosition = lastChild.getId(); 61 62 63 int bottomThreshold = (lastVisiblePosition < mListView.getAdapter().getCount() - 1) ? 64 bottomFadingEdge : listBottom; 65 66 String prefix = "after " + i + " down presses, "; 67 68 assertTrue(prefix + "selected item is below bottom threshold (fading edge or bottom as " + 69 "appropriate)", 70 mListView.getSelectedView().getBottom() <= bottomThreshold); 71 assertTrue(prefix + "first item in list must be at very top or just above", 72 mListView.getChildAt(0).getTop() <= 0); 73 assertTrue(prefix + "last item in list should be at very bottom or just below", 74 lastChild.getBottom() >= listBottom); 75 sendKeys(KeyEvent.KEYCODE_DPAD_DOWN); 76 } 77 } 78 79 @LargeTest 80 public void testScrollToTop() { 81 final int numItems = mListView.getAdapter().getCount(); 82 83 for (int i = 0; i < numItems - 1; i++) { 84 sendKeys(KeyEvent.KEYCODE_DPAD_DOWN); 85 } 86 assertEquals("should have moved to last position", 87 numItems - 1, mListView.getSelectedItemPosition()); 88 89 int listTop = mListView.getListPaddingTop(); 90 final int listBottom = mListView.getHeight() - mListView.getListPaddingBottom(); 91 92 for (int i = 0; i < numItems; i++) { 93 int expectedPostion = numItems - (i + 1); 94 assertEquals("wrong selection at position " + expectedPostion, 95 expectedPostion, mListView.getSelectedItemPosition()); 96 final int topFadingEdge = listTop + mListView.getVerticalFadingEdgeLength(); 97 final View firstChild = mListView.getChildAt(0); 98 final View lastChild = mListView.getChildAt(mListView.getChildCount() - 1); 99 final int firstVisiblePosition = firstChild.getId(); 100 101 102 int topThreshold = (firstVisiblePosition > 0) ? 103 topFadingEdge : listTop; 104 105 String prefix = "after " + i + " up presses, "; 106 107 assertTrue(prefix + "selected item is above top threshold (fading edge or top as " + 108 "appropriate)", 109 mListView.getSelectedView().getTop() >= topThreshold); 110 assertTrue(prefix + "first item in list must be at very top or just above", 111 firstChild.getTop() <= 0); 112 assertTrue(prefix + "last item in list should be at very bottom or just below", 113 lastChild.getBottom() >= listBottom); 114 sendKeys(KeyEvent.KEYCODE_DPAD_UP); 115 } 116 } 117 } 118