/*
* Copyright (C) 2010 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 com.android.common.widget;
import static com.android.common.widget.GroupingListAdapter.ITEM_TYPE_GROUP_HEADER;
import static com.android.common.widget.GroupingListAdapter.ITEM_TYPE_IN_GROUP;
import static com.android.common.widget.GroupingListAdapter.ITEM_TYPE_STANDALONE;
import android.content.Context;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.test.AndroidTestCase;
import android.text.TextUtils;
import android.view.View;
import android.view.ViewGroup;
/**
* Tests for {@link GroupingListAdapter}.
*
* Running all tests:
*
* adb shell am instrument -e class com.android.common.widget.GroupingListAdapterTests \
* -w com.android.common.tests/android.test.InstrumentationTestRunner
*/
public class GroupingListAdapterTests extends AndroidTestCase {
static private final String[] PROJECTION = new String[] {
"_id",
"group",
};
private static final int GROUPING_COLUMN_INDEX = 1;
private MatrixCursor mCursor;
private long mNextId;
private GroupingListAdapter mAdapter = new GroupingListAdapter(null) {
@Override
protected void addGroups(Cursor cursor) {
int count = cursor.getCount();
int groupItemCount = 1;
cursor.moveToFirst();
String currentValue = cursor.getString(GROUPING_COLUMN_INDEX);
for (int i = 1; i < count; i++) {
cursor.moveToNext();
String value = cursor.getString(GROUPING_COLUMN_INDEX);
if (TextUtils.equals(value, currentValue)) {
groupItemCount++;
} else {
if (groupItemCount > 1) {
addGroup(i - groupItemCount, groupItemCount, false);
}
groupItemCount = 1;
currentValue = value;
}
}
if (groupItemCount > 1) {
addGroup(count - groupItemCount, groupItemCount, false);
}
}
@Override
protected void bindChildView(View view, Context context, Cursor cursor) {
}
@Override
protected void bindGroupView(View view, Context context, Cursor cursor, int groupSize,
boolean expanded) {
}
@Override
protected void bindStandAloneView(View view, Context context, Cursor cursor) {
}
@Override
protected View newChildView(Context context, ViewGroup parent) {
return null;
}
@Override
protected View newGroupView(Context context, ViewGroup parent) {
return null;
}
@Override
protected View newStandAloneView(Context context, ViewGroup parent) {
return null;
}
};
private void buildCursor(String... numbers) {
mCursor = new MatrixCursor(PROJECTION);
mNextId = 1;
for (String number : numbers) {
mCursor.addRow(new Object[]{mNextId, number});
mNextId++;
}
}
public void testGroupingWithoutGroups() {
buildCursor("1", "2", "3");
mAdapter.changeCursor(mCursor);
assertEquals(3, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 1);
assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 2);
}
public void testGroupingWithCollapsedGroupAtTheBeginning() {
buildCursor("1", "1", "2");
mAdapter.changeCursor(mCursor);
assertEquals(2, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_GROUP_HEADER, false, 0);
assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 2);
}
public void testGroupingWithExpandedGroupAtTheBeginning() {
buildCursor("1", "1", "2");
mAdapter.changeCursor(mCursor);
mAdapter.toggleGroup(0);
assertEquals(4, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_GROUP_HEADER, true, 0);
assertPositionMetadata(1, ITEM_TYPE_IN_GROUP, false, 0);
assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
assertPositionMetadata(3, ITEM_TYPE_STANDALONE, false, 2);
}
public void testGroupingWithExpandCollapseCycleAtTheBeginning() {
buildCursor("1", "1", "2");
mAdapter.changeCursor(mCursor);
mAdapter.toggleGroup(0);
mAdapter.toggleGroup(0);
assertEquals(2, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_GROUP_HEADER, false, 0);
assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 2);
}
public void testGroupingWithCollapsedGroupInTheMiddle() {
buildCursor("1", "2", "2", "2", "3");
mAdapter.changeCursor(mCursor);
assertEquals(3, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, false, 1);
assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 4);
}
public void testGroupingWithExpandedGroupInTheMiddle() {
buildCursor("1", "2", "2", "2", "3");
mAdapter.changeCursor(mCursor);
mAdapter.toggleGroup(1);
assertEquals(6, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, true, 1);
assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
assertPositionMetadata(4, ITEM_TYPE_IN_GROUP, false, 3);
assertPositionMetadata(5, ITEM_TYPE_STANDALONE, false, 4);
}
public void testGroupingWithCollapsedGroupAtTheEnd() {
buildCursor("1", "2", "3", "3", "3");
mAdapter.changeCursor(mCursor);
assertEquals(3, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 1);
assertPositionMetadata(2, ITEM_TYPE_GROUP_HEADER, false, 2);
}
public void testGroupingWithExpandedGroupAtTheEnd() {
buildCursor("1", "2", "3", "3", "3");
mAdapter.changeCursor(mCursor);
mAdapter.toggleGroup(2);
assertEquals(6, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 1);
assertPositionMetadata(2, ITEM_TYPE_GROUP_HEADER, true, 2);
assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
assertPositionMetadata(4, ITEM_TYPE_IN_GROUP, false, 3);
assertPositionMetadata(5, ITEM_TYPE_IN_GROUP, false, 4);
}
public void testGroupingWithMultipleCollapsedGroups() {
buildCursor("1", "2", "2", "3", "4", "4", "5", "5", "6");
mAdapter.changeCursor(mCursor);
assertEquals(6, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, false, 1);
assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 3);
assertPositionMetadata(3, ITEM_TYPE_GROUP_HEADER, false, 4);
assertPositionMetadata(4, ITEM_TYPE_GROUP_HEADER, false, 6);
assertPositionMetadata(5, ITEM_TYPE_STANDALONE, false, 8);
}
public void testGroupingWithMultipleExpandedGroups() {
buildCursor("1", "2", "2", "3", "4", "4", "5", "5", "6");
mAdapter.changeCursor(mCursor);
mAdapter.toggleGroup(1);
// Note that expanding the group of 2's shifted the group of 5's down from the
// 4th to the 6th position
mAdapter.toggleGroup(6);
assertEquals(10, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, true, 1);
assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
assertPositionMetadata(4, ITEM_TYPE_STANDALONE, false, 3);
assertPositionMetadata(5, ITEM_TYPE_GROUP_HEADER, false, 4);
assertPositionMetadata(6, ITEM_TYPE_GROUP_HEADER, true, 6);
assertPositionMetadata(7, ITEM_TYPE_IN_GROUP, false, 6);
assertPositionMetadata(8, ITEM_TYPE_IN_GROUP, false, 7);
assertPositionMetadata(9, ITEM_TYPE_STANDALONE, false, 8);
}
public void testPositionCache() {
buildCursor("1", "2", "2", "3", "4", "4", "5", "5", "6");
mAdapter.changeCursor(mCursor);
// First pass - building up cache
assertEquals(6, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, false, 1);
assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 3);
assertPositionMetadata(3, ITEM_TYPE_GROUP_HEADER, false, 4);
assertPositionMetadata(4, ITEM_TYPE_GROUP_HEADER, false, 6);
assertPositionMetadata(5, ITEM_TYPE_STANDALONE, false, 8);
// Second pass - using cache
assertEquals(6, mAdapter.getCount());
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, false, 1);
assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 3);
assertPositionMetadata(3, ITEM_TYPE_GROUP_HEADER, false, 4);
assertPositionMetadata(4, ITEM_TYPE_GROUP_HEADER, false, 6);
assertPositionMetadata(5, ITEM_TYPE_STANDALONE, false, 8);
// Invalidate cache by expanding a group
mAdapter.toggleGroup(1);
// First pass - building up cache
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, true, 1);
assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
assertPositionMetadata(4, ITEM_TYPE_STANDALONE, false, 3);
assertPositionMetadata(5, ITEM_TYPE_GROUP_HEADER, false, 4);
assertPositionMetadata(6, ITEM_TYPE_GROUP_HEADER, false, 6);
assertPositionMetadata(7, ITEM_TYPE_STANDALONE, false, 8);
// Second pass - using cache
assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, true, 1);
assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
assertPositionMetadata(4, ITEM_TYPE_STANDALONE, false, 3);
assertPositionMetadata(5, ITEM_TYPE_GROUP_HEADER, false, 4);
assertPositionMetadata(6, ITEM_TYPE_GROUP_HEADER, false, 6);
assertPositionMetadata(7, ITEM_TYPE_STANDALONE, false, 8);
}
public void testGroupDescriptorArrayGrowth() {
String[] numbers = new String[500];
for (int i = 0; i < numbers.length; i++) {
// Make groups of 2
numbers[i] = String.valueOf((i / 2) * 2);
}
buildCursor(numbers);
mAdapter.changeCursor(mCursor);
assertEquals(250, mAdapter.getCount());
}
private void assertPositionMetadata(int position, int itemType, boolean isExpanded,
int cursorPosition) {
GroupingListAdapter.PositionMetadata metadata = new GroupingListAdapter.PositionMetadata();
mAdapter.obtainPositionMetadata(metadata, position);
assertEquals(itemType, metadata.itemType);
if (metadata.itemType == ITEM_TYPE_GROUP_HEADER) {
assertEquals(isExpanded, metadata.isExpanded);
}
assertEquals(cursorPosition, metadata.cursorPosition);
}
}
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