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