| /* |
| * 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.listview.arrowscroll; |
| |
| import android.test.ActivityInstrumentationTestCase; |
| import android.view.KeyEvent; |
| import android.view.View; |
| import android.widget.ListView; |
| import android.widget.listview.ListOfThinItems; |
| |
| import androidx.test.filters.LargeTest; |
| import androidx.test.filters.MediumTest; |
| import androidx.test.filters.Suppress; |
| |
| public class ListOfThinItemsTest extends ActivityInstrumentationTestCase<ListOfThinItems> { |
| private ListView mListView; |
| |
| public ListOfThinItemsTest() { |
| super("com.android.frameworks.coretests", ListOfThinItems.class); |
| } |
| |
| @Override |
| protected void setUp() throws Exception{ |
| super.setUp(); |
| mListView = getActivity().getListView(); |
| } |
| |
| @MediumTest |
| @Suppress // Failing. |
| public void testPreconditions() { |
| assertNotNull(mListView); |
| assertTrue("need item height less than fading edge length", |
| mListView.getSelectedView().getHeight() < mListView.getVerticalFadingEdgeLength()); |
| assertTrue("need items off screen", |
| mListView.getChildCount() < mListView.getAdapter().getCount()); |
| } |
| |
| @LargeTest |
| public void testScrollToBottom() { |
| // focus the listview |
| getActivity().runOnUiThread(() -> mListView.requestFocus()); |
| getInstrumentation().waitForIdleSync(); |
| |
| final int numItems = mListView.getAdapter().getCount(); |
| final int listBottom = mListView.getHeight() - mListView.getListPaddingBottom(); |
| for (int i = 0; i < numItems; i++) { |
| assertEquals("wrong selection at position " + i, |
| i, mListView.getSelectedItemPosition()); |
| final int bottomFadingEdge = listBottom - mListView.getVerticalFadingEdgeLength(); |
| final View lastChild = mListView.getChildAt(mListView.getChildCount() - 1); |
| final int lastVisiblePosition = lastChild.getId(); |
| |
| |
| int bottomThreshold = (lastVisiblePosition < mListView.getAdapter().getCount() - 1) ? |
| bottomFadingEdge : listBottom; |
| |
| String prefix = "after " + i + " down presses, "; |
| |
| assertTrue(prefix + "selected item is below bottom threshold (fading edge or bottom as " + |
| "appropriate)", |
| mListView.getSelectedView().getBottom() <= bottomThreshold); |
| assertTrue(prefix + "first item in list must be at very top or just above", |
| mListView.getChildAt(0).getTop() <= 0); |
| assertTrue(prefix + "last item in list should be at very bottom or just below", |
| lastChild.getBottom() >= listBottom); |
| sendKeys(KeyEvent.KEYCODE_DPAD_DOWN); |
| } |
| } |
| |
| @LargeTest |
| public void testScrollToTop() { |
| // focus the listview |
| getActivity().runOnUiThread(() -> mListView.requestFocus()); |
| getInstrumentation().waitForIdleSync(); |
| |
| final int numItems = mListView.getAdapter().getCount(); |
| |
| for (int i = 0; i < numItems - 1; i++) { |
| sendKeys(KeyEvent.KEYCODE_DPAD_DOWN); |
| } |
| assertEquals("should have moved to last position", |
| numItems - 1, mListView.getSelectedItemPosition()); |
| |
| int listTop = mListView.getListPaddingTop(); |
| final int listBottom = mListView.getHeight() - mListView.getListPaddingBottom(); |
| |
| for (int i = 0; i < numItems; i++) { |
| int expectedPostion = numItems - (i + 1); |
| assertEquals("wrong selection at position " + expectedPostion, |
| expectedPostion, mListView.getSelectedItemPosition()); |
| final int topFadingEdge = listTop + mListView.getVerticalFadingEdgeLength(); |
| final View firstChild = mListView.getChildAt(0); |
| final View lastChild = mListView.getChildAt(mListView.getChildCount() - 1); |
| final int firstVisiblePosition = firstChild.getId(); |
| |
| |
| int topThreshold = (firstVisiblePosition > 0) ? |
| topFadingEdge : listTop; |
| |
| String prefix = "after " + i + " up presses, "; |
| |
| assertTrue(prefix + "selected item is above top threshold (fading edge or top as " + |
| "appropriate)", |
| mListView.getSelectedView().getTop() >= topThreshold); |
| assertTrue(prefix + "first item in list must be at very top or just above", |
| firstChild.getTop() <= 0); |
| assertTrue(prefix + "last item in list should be at very bottom or just below", |
| lastChild.getBottom() >= listBottom); |
| sendKeys(KeyEvent.KEYCODE_DPAD_UP); |
| } |
| } |
| } |