1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.imaging.formats.tiff.datareaders;
18
19 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
20
21 import org.apache.commons.imaging.formats.tiff.constants.TiffPlanarConfiguration;
22 import org.junit.jupiter.api.Test;
23
24 public class DataReaderStripsTest {
25 @Test
26 public void testApplyPredictor() {
27 final int[] bitsPerPixel = { 1, 2, 3 };
28 final DataReaderStrips strips = new DataReaderStrips(null, null, 3, bitsPerPixel, 2, 4, 0, 3, 1, 1, TiffPlanarConfiguration.CHUNKY, null, 2, null);
29 strips.resetPredictor();
30 final int[] samples = { 10, 355, 355, 255 };
31 int[] expected = { 10, 99, 99, 255 };
32 int[] predicted = strips.applyPredictor(samples);
33 assertArrayEquals(expected, predicted);
34 expected = new int[] { 20, 198, 198, 254 };
35 predicted = strips.applyPredictor(samples);
36 assertArrayEquals(expected, predicted);
37 }
38 }