/*
* Copyright (C) 2012 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.text;
import static android.text.Layout.Alignment.*;
import android.text.DynamicLayout;
import junit.framework.TestCase;
/**
* Tests DynamciLayout updateBlocks method.
*
* Requires disabling access checks in the vm since this calls package-private APIs.
*
* @Suppress
*/
public class DynamicLayoutBlocksTest extends TestCase {
private DynamicLayout dl = new DynamicLayout("", new TextPaint(), 0, ALIGN_NORMAL, 0, 0, false);
private static final int ___ = DynamicLayout.INVALID_BLOCK_INDEX;
private int[] initialBlockEnds;
private int[] initialBlockIndices;
private void defineInitialState(int[] ends, int[] indices) {
initialBlockEnds = ends;
initialBlockIndices = indices;
assertEquals(initialBlockEnds.length, initialBlockIndices.length);
}
public void printBlocks(String message) {
System.out.print(message);
for (int i = 0; i < dl.getNumberOfBlocks(); i++) {
System.out.print(" " + Integer.toString(dl.getBlockEndLines()[i]));
}
System.out.println();
}
public void checkInvariants() {
assertTrue(dl.getNumberOfBlocks() > 0);
assertTrue(dl.getNumberOfBlocks() <= dl.getBlockEndLines().length);
assertEquals(dl.getBlockEndLines().length, dl.getBlockIndices().length);
for (int i = 1; i < dl.getNumberOfBlocks(); i++) {
assertTrue(dl.getBlockEndLines()[i] > dl.getBlockEndLines()[i-1]);
}
}
private void update(int startLine, int endLine, int newLineCount) {
dl.setBlocksDataForTest(initialBlockEnds, initialBlockIndices, initialBlockEnds.length);
checkInvariants();
dl.updateBlocks(startLine, endLine, newLineCount);
}
private void assertState(int[] sizes, int[] indices) {
checkInvariants();
assertEquals(sizes.length, dl.getNumberOfBlocks());
assertEquals(indices.length, dl.getNumberOfBlocks());
int[] ends = new int[sizes.length];
for (int i = 0; i < ends.length; i++) {
ends[i] = i == 0 ? (sizes[0] == 0 ? 0 : sizes[0] - 1) : ends[i - 1] + sizes[i];
}
for (int i = 0; i < dl.getNumberOfBlocks(); i++) {
assertEquals(ends[i], dl.getBlockEndLines()[i]);
assertEquals(indices[i], dl.getBlockIndices()[i]);
}
}
private void assertState(int[] sizes) {
int[] ids = new int[sizes.length];
for (int i = 0; i < sizes.length; i++) {
ids[i] = DynamicLayout.INVALID_BLOCK_INDEX;
}
assertState(sizes, ids);
}
public void testFrom0() {
defineInitialState( new int[] { 0 }, new int[] { 123 });
update(0, 0, 0);
assertState( new int[] { 0 } );
update(0, 0, 1);
assertState( new int[] { 0 } );
update(0, 0, 10);
assertState( new int[] { 10 } );
}
public void testFrom1ReplaceByEmpty() {
defineInitialState( new int[] { 100 }, new int[] { 123 });
update(0, 0, 0);
assertState( new int[] { 100 } );
update(0, 10, 0);
assertState( new int[] { 90 } );
update(0, 100, 0);
assertState( new int[] { 0 } );
update(20, 30, 0);
assertState( new int[] { 20, 70 } );
update(20, 20, 0);
assertState( new int[] { 20, 80 } );
update(40, 100, 0);
assertState( new int[] { 40 } );
update(100, 100, 0);
assertState( new int[] { 100 } );
}
public void testFrom1ReplaceFromFirstLine() {
defineInitialState( new int[] { 100 }, new int[] { 123 });
update(0, 0, 1);
assertState( new int[] { 0, 100 } );
update(0, 0, 10);
assertState( new int[] { 10, 100 } );
update(0, 30, 31);
assertState( new int[] { 31, 70 } );
update(0, 100, 20);
assertState( new int[] { 20 } );
}
public void testFrom1ReplaceFromCenter() {
defineInitialState( new int[] { 100 }, new int[] { 123 });
update(20, 20, 1);
assertState( new int[] { 20, 1, 80 } );
update(20, 20, 10);
assertState( new int[] { 20, 10, 80 } );
update(20, 30, 50);
assertState( new int[] { 20, 50, 70 } );
update(20, 100, 50);
assertState( new int[] { 20, 50 } );
}
public void testFrom1ReplaceFromEnd() {
defineInitialState( new int[] { 100 }, new int[] { 123 });
update(100, 100, 0);
assertState( new int[] { 100 } );
update(100, 100, 1);
assertState( new int[] { 100, 1 } );
update(100, 100, 10);
assertState( new int[] { 100, 10 } );
}
public void testFrom2ReplaceFromFirstLine() {
defineInitialState( new int[] { 10, 20 }, new int[] { 123, 456 });
update(0, 4, 50);
assertState( new int[] { 50, 10-4, 20-10 }, new int[] { ___, ___, 456 } );
update(0, 10, 50);
assertState( new int[] { 50, 20-10 }, new int[] { ___, 456 } );
update(0, 15, 50);
assertState( new int[] { 50, 20-15 }, new int[] { ___, ___ } );
update(0, 20, 50);
assertState( new int[] { 50 }, new int[] { ___ } );
}
public void testFrom2ReplaceFromFirstBlock() {
defineInitialState( new int[] { 10, 20 }, new int[] { 123, 456 });
update(3, 7, 50);
assertState( new int[] { 3, 50, 10-7, 20-10 }, new int[] { ___, ___, ___, 456 } );
update(3, 10, 50);
assertState( new int[] { 3, 50, 20-10 }, new int[] { ___, ___, 456 } );
update(3, 14, 50);
assertState( new int[] { 3, 50, 20-14 }, new int[] { ___, ___, ___ } );
update(3, 20, 50);
assertState( new int[] { 3, 50 }, new int[] { ___, ___ } );
}
public void testFrom2ReplaceFromBottomBoundary() {
defineInitialState( new int[] { 10, 20 }, new int[] { 123, 456 });
update(10, 10, 50);
assertState( new int[] { 10, 50, 20-10 }, new int[] { ___, ___, 456 } );
update(10, 14, 50);
assertState( new int[] { 10, 50, 20-14 }, new int[] { ___, ___, ___ } );
update(10, 20, 50);
assertState( new int[] { 10, 50 }, new int[] { ___, ___ } );
}
public void testFrom2ReplaceFromTopBoundary() {
defineInitialState( new int[] { 10, 20 }, new int[] { 123, 456 });
update(11, 11, 50);
assertState( new int[] { 11, 50, 20-11 }, new int[] { 123, ___, ___ } );
update(11, 14, 50);
assertState( new int[] { 11, 50, 20-14 }, new int[] { 123, ___, ___ } );
update(11, 20, 50);
assertState( new int[] { 11, 50 }, new int[] { 123, ___ } );
}
public void testFrom2ReplaceFromSecondBlock() {
defineInitialState( new int[] { 10, 20 }, new int[] { 123, 456 });
update(14, 14, 50);
assertState( new int[] { 11, 14-11, 50, 20-14 }, new int[] { 123, ___, ___, ___ } );
update(14, 17, 50);
assertState( new int[] { 11, 14-11, 50, 20-17 }, new int[] { 123, ___, ___, ___ } );
update(14, 20, 50);
assertState( new int[] { 11, 14-11, 50 }, new int[] { 123, ___, ___ } );
}
public void testFrom2RemoveFromFirst() {
defineInitialState( new int[] { 10, 20 }, new int[] { 123, 456 });
update(0, 4, 0);
assertState( new int[] { 10-4, 20-10 }, new int[] { ___, 456 } );
update(0, 10, 0);
assertState( new int[] { 20-10 }, new int[] { 456 } );
update(0, 14, 0);
assertState( new int[] { 20-14 }, new int[] { ___ } );
update(0, 20, 0);
assertState( new int[] { 0 }, new int[] { ___ } );
}
public void testFrom2RemoveFromFirstBlock() {
defineInitialState( new int[] { 10, 20 }, new int[] { 123, 456 });
update(4, 7, 0);
assertState( new int[] { 4, 10-7, 20-10 }, new int[] { ___, ___, 456 } );
update(4, 10, 0);
assertState( new int[] { 4, 20-10 }, new int[] { ___, 456 } );
update(4, 14, 0);
assertState( new int[] { 4, 20-14 }, new int[] { ___, ___ } );
update(4, 20, 0);
assertState( new int[] { 4 }, new int[] { ___ } );
}
public void testFrom2RemoveFromSecondBlock() {
defineInitialState( new int[] { 10, 20 }, new int[] { 123, 456 });
update(14, 17, 0);
assertState( new int[] { 11, 14-11, 20-17 }, new int[] { 123, ___, ___ } );
update(14, 20, 0);
assertState( new int[] { 11, 14-11 }, new int[] { 123, ___ } );
}
public void testFrom3ReplaceFromFirstBlock() {
defineInitialState( new int[] { 10, 30, 60 }, new int[] { 123, 456, 789 });
update(3, 7, 50);
assertState( new int[] { 3, 50, 10-7, 30-10, 60-30 }, new int[] { ___, ___, ___, 456, 789 } );
update(3, 10, 50);
assertState( new int[] { 3, 50, 30-10, 60-30 }, new int[] { ___, ___, 456, 789 } );
update(3, 17, 50);
assertState( new int[] { 3, 50, 30-17, 60-30 }, new int[] { ___, ___, ___, 789 } );
update(3, 30, 50);
assertState( new int[] { 3, 50, 60-30 }, new int[] { ___, ___, 789 } );
update(3, 40, 50);
assertState( new int[] { 3, 50, 60-40 }, new int[] { ___, ___, ___ } );
update(3, 60, 50);
assertState( new int[] { 3, 50 }, new int[] { ___, ___ } );
}
public void testFrom3ReplaceFromSecondBlock() {
defineInitialState( new int[] { 10, 30, 60 }, new int[] { 123, 456, 789 });
update(13, 17, 50);
assertState( new int[] { 11, 2, 50, 30-17, 60-30 }, new int[] { 123, ___, ___, ___, 789 } );
update(13, 30, 50);
assertState( new int[] { 11, 2, 50, 60-30 }, new int[] { 123, ___, ___, 789 } );
update(13, 40, 50);
assertState( new int[] { 11, 2, 50, 60-40 }, new int[] { 123, ___, ___, ___ } );
update(13, 60, 50);
assertState( new int[] { 11, 2, 50 }, new int[] { 123, ___, ___ } );
}
}
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