| /* |
| * Copyright (C) 2008 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; |
| |
| import android.content.Context; |
| import android.database.Cursor; |
| import android.database.MatrixCursor; |
| import android.test.AndroidTestCase; |
| |
| import androidx.test.filters.SmallTest; |
| import androidx.test.filters.Suppress; |
| |
| import com.google.android.collect.Lists; |
| |
| import java.util.ArrayList; |
| import java.util.Random; |
| |
| /** |
| * This is a series of tests of basic API contracts for SimpleCursorAdapter. It is |
| * incomplete and can use work. |
| * |
| * NOTE: This contract holds for underlying cursor types too and these should |
| * be extracted into a set of tests that can be run on any descendant of CursorAdapter. |
| */ |
| @Suppress // Failing. |
| public class SimpleCursorAdapterTest extends AndroidTestCase { |
| |
| String[] mFrom; |
| int[] mTo; |
| int mLayout; |
| Context mContext; |
| |
| ArrayList<ArrayList> mData2x2; |
| Cursor mCursor2x2; |
| |
| /** |
| * Set up basic columns and cursor for the tests |
| */ |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| |
| // all the pieces needed for the various tests |
| mFrom = new String[]{"Column1", "Column2", "_id"}; |
| mTo = new int[]{com.android.internal.R.id.text1, com.android.internal.R.id.text2}; |
| mLayout = com.android.internal.R.layout.simple_list_item_2; |
| mContext = getContext(); |
| |
| // raw data for building a basic test cursor |
| mData2x2 = createTestList(2, 2); |
| mCursor2x2 = createCursor(mFrom, mData2x2); |
| } |
| |
| /** |
| * Borrowed from CursorWindowTest.java |
| */ |
| private ArrayList<ArrayList> createTestList(int rows, int cols) { |
| ArrayList<ArrayList> list = Lists.newArrayList(); |
| Random generator = new Random(); |
| |
| for (int i = 0; i < rows; i++) { |
| ArrayList<Integer> col = Lists.newArrayList(); |
| list.add(col); |
| for (int j = 0; j < cols; j++) { |
| // generate random number |
| Integer r = generator.nextInt(); |
| col.add(r); |
| } |
| col.add(i); |
| } |
| return list; |
| } |
| |
| /** |
| * Test creating with a live cursor |
| */ |
| @SmallTest |
| public void testCreateLive() { |
| SimpleCursorAdapter ca = new SimpleCursorAdapter(mContext, mLayout, mCursor2x2, mFrom, mTo); |
| |
| // Now see if we can pull 2 rows from the adapter |
| assertEquals(2, ca.getCount()); |
| } |
| |
| /** |
| * Test creating with a null cursor |
| */ |
| @SmallTest |
| public void testCreateNull() { |
| SimpleCursorAdapter ca = new SimpleCursorAdapter(mContext, mLayout, null, mFrom, mTo); |
| |
| // The adapter should report zero rows |
| assertEquals(0, ca.getCount()); |
| } |
| |
| /** |
| * Test changeCursor() with live cursor |
| */ |
| @SmallTest |
| public void testChangeCursorLive() { |
| SimpleCursorAdapter ca = new SimpleCursorAdapter(mContext, mLayout, mCursor2x2, mFrom, mTo); |
| |
| // Now see if we can pull 2 rows from the adapter |
| assertEquals(2, ca.getCount()); |
| |
| // now put in a different cursor (5 rows) |
| ArrayList<ArrayList> data2 = createTestList(5, 2); |
| Cursor c2 = createCursor(mFrom, data2); |
| ca.changeCursor(c2); |
| |
| // Now see if we can pull 5 rows from the adapter |
| assertEquals(5, ca.getCount()); |
| } |
| |
| /** |
| * Test changeCursor() with null cursor |
| */ |
| @SmallTest |
| public void testChangeCursorNull() { |
| SimpleCursorAdapter ca = new SimpleCursorAdapter(mContext, mLayout, mCursor2x2, mFrom, mTo); |
| |
| // Now see if we can pull 2 rows from the adapter |
| assertEquals(2, ca.getCount()); |
| |
| // now put in null |
| ca.changeCursor(null); |
| |
| // The adapter should report zero rows |
| assertEquals(0, ca.getCount()); |
| } |
| |
| /** |
| * Test changeCursor() with differing column layout. This confirms that the Adapter can |
| * deal with cursors that have the same essential data (as defined by the original mFrom |
| * array) but it's OK if the physical structure of the cursor changes (columns rearranged). |
| */ |
| @SmallTest |
| public void testChangeCursorColumns() { |
| TestSimpleCursorAdapter ca = new TestSimpleCursorAdapter(mContext, mLayout, mCursor2x2, |
| mFrom, mTo); |
| |
| // check columns of original - mFrom and mTo should line up |
| int[] columns = ca.getConvertedFrom(); |
| assertEquals(columns[0], 0); |
| assertEquals(columns[1], 1); |
| |
| // Now make a new cursor with similar data but rearrange the columns |
| String[] swappedFrom = new String[]{"Column2", "Column1", "_id"}; |
| Cursor c2 = createCursor(swappedFrom, mData2x2); |
| ca.changeCursor(c2); |
| assertEquals(2, ca.getCount()); |
| |
| // check columns to see if rearrangement tracked (should be swapped now) |
| columns = ca.getConvertedFrom(); |
| assertEquals(columns[0], 1); |
| assertEquals(columns[1], 0); |
| } |
| |
| /** |
| * Test that you can safely construct with a null cursor *and* null to/from arrays. |
| * This is new functionality added in 12/2008. |
| */ |
| @SmallTest |
| public void testNullConstructor() { |
| SimpleCursorAdapter ca = new SimpleCursorAdapter(mContext, mLayout, null, null, null); |
| assertEquals(0, ca.getCount()); |
| } |
| |
| /** |
| * Test going from a null cursor to a non-null cursor *and* setting the to/from arrays |
| * This is new functionality added in 12/2008. |
| */ |
| @SmallTest |
| public void testChangeNullToMapped() { |
| TestSimpleCursorAdapter ca = new TestSimpleCursorAdapter(mContext, mLayout, null, null, null); |
| assertEquals(0, ca.getCount()); |
| |
| ca.changeCursorAndColumns(mCursor2x2, mFrom, mTo); |
| assertEquals(2, ca.getCount()); |
| |
| // check columns of original - mFrom and mTo should line up |
| int[] columns = ca.getConvertedFrom(); |
| assertEquals(2, columns.length); |
| assertEquals(0, columns[0]); |
| assertEquals(1, columns[1]); |
| int[] viewIds = ca.getTo(); |
| assertEquals(2, viewIds.length); |
| assertEquals(com.android.internal.R.id.text1, viewIds[0]); |
| assertEquals(com.android.internal.R.id.text2, viewIds[1]); |
| } |
| |
| /** |
| * Test going from one mapping to a different mapping |
| * This is new functionality added in 12/2008. |
| */ |
| @SmallTest |
| public void testChangeMapping() { |
| TestSimpleCursorAdapter ca = new TestSimpleCursorAdapter(mContext, mLayout, mCursor2x2, |
| mFrom, mTo); |
| assertEquals(2, ca.getCount()); |
| |
| // Now create a new configuration with same cursor and just one column mapped |
| String[] singleFrom = new String[]{"Column1"}; |
| int[] singleTo = new int[]{com.android.internal.R.id.text1}; |
| ca.changeCursorAndColumns(mCursor2x2, singleFrom, singleTo); |
| |
| // And examine the results, make sure they're still consistent |
| int[] columns = ca.getConvertedFrom(); |
| assertEquals(1, columns.length); |
| assertEquals(0, columns[0]); |
| int[] viewIds = ca.getTo(); |
| assertEquals(1, viewIds.length); |
| assertEquals(com.android.internal.R.id.text1, viewIds[0]); |
| |
| // And again, same cursor, different map |
| singleFrom = new String[]{"Column2"}; |
| singleTo = new int[]{com.android.internal.R.id.text2}; |
| ca.changeCursorAndColumns(mCursor2x2, singleFrom, singleTo); |
| |
| // And examine the results, make sure they're still consistent |
| columns = ca.getConvertedFrom(); |
| assertEquals(1, columns.length); |
| assertEquals(1, columns[0]); |
| viewIds = ca.getTo(); |
| assertEquals(1, viewIds.length); |
| assertEquals(com.android.internal.R.id.text2, viewIds[0]); |
| } |
| |
| private static MatrixCursor createCursor(String[] columns, ArrayList<ArrayList> list) { |
| MatrixCursor cursor = new MatrixCursor(columns, list.size()); |
| for (ArrayList row : list) { |
| cursor.addRow(row); |
| } |
| return cursor; |
| } |
| |
| /** |
| * This is simply a way to sneak a look at the protected mFrom() array. A more API- |
| * friendly way to do this would be to mock out a View and a ViewBinder and exercise |
| * it via those seams. |
| */ |
| private static class TestSimpleCursorAdapter extends SimpleCursorAdapter { |
| |
| public TestSimpleCursorAdapter(Context context, int layout, Cursor c, |
| String[] from, int[] to) { |
| super(context, layout, c, from, to); |
| } |
| |
| int[] getConvertedFrom() { |
| return mFrom; |
| } |
| |
| int[] getTo() { |
| return mTo; |
| } |
| } |
| } |