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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  
18  package org.apache.commons.imaging.formats.gif;
19  
20  import java.io.File;
21  import java.io.IOException;
22  import java.util.List;
23  
24  import org.apache.commons.imaging.AbstractImagingTest;
25  import org.apache.commons.imaging.ImageFormat;
26  import org.apache.commons.imaging.ImageFormats;
27  import org.apache.commons.imaging.Imaging;
28  import org.apache.commons.imaging.ImagingException;
29  
30  public abstract class AbstractGifTest extends AbstractImagingTest {
31  
32      private final static String ANIMATED_FOLDER_NAME = "animated";
33  
34      private final static String SINGLE_IMAGE_FOLDER_NAME = "single";
35  
36      private static final ImageFilter IMAGE_FILTER = AbstractGifTest::isGif;
37  
38      private static final ImageFilter ANIMATED_IMAGE_FILTER = file -> isGif(file) && isAnimated(file);
39  
40      private static final ImageFilter SINGLE_IMAGE_FILTER = file -> isGif(file) && isSingleImage(file);
41  
42      protected static List<File> getAnimatedGifImages() throws IOException, ImagingException {
43          return getTestImages(ANIMATED_IMAGE_FILTER);
44      }
45  
46      protected static List<File> getGifImages() throws IOException, ImagingException {
47          return getTestImages(IMAGE_FILTER);
48      }
49  
50      protected static List<File> getGifImagesWithSingleImage() throws IOException, ImagingException {
51          return getTestImages(SINGLE_IMAGE_FILTER);
52      }
53  
54      private static boolean isAnimated(final File file) {
55          final File index = file.getParentFile();
56          final File type = index.getParentFile();
57          return type.getName().equals(ANIMATED_FOLDER_NAME);
58      }
59  
60      private static boolean isGif(final File file) throws IOException {
61          final ImageFormat format = Imaging.guessFormat(file);
62          return format == ImageFormats.GIF;
63      }
64  
65      private static boolean isSingleImage(final File file) {
66          final File index = file.getParentFile();
67          final File type = index.getParentFile();
68          return type.getName().equals(SINGLE_IMAGE_FOLDER_NAME);
69      }
70  
71  }