content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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 org.apache.causeway.commons.internal.image;
  
  import java.awt.image.BufferedImage;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  
  class _ImagesTest {
  
      @Test
      void pixelRoundtrip() {
          // given
          var bufferedImage = getBufferedImage();
  
          // when 
          var imageAfterRoundtrip = _Images.fromPixels(_Images.toPixels(bufferedImage));
          
          // then
          assertArrayEquals(getPixels(), _Images.toPixels(imageAfterRoundtrip));
      }
  
      @Test
      void bytesRoundtrip() {
          // given
          var bufferedImage = getBufferedImage();
  
          // when 
          var imageAfterRoundtrip = _Images.fromBytes(_Images.toBytes(bufferedImage));
          
          // then
          assertArrayEquals(getPixels(), _Images.toPixels(imageAfterRoundtrip));
      }
      
      @Test
      void base64Roundtrip() {
          // given
          var bufferedImage = getBufferedImage();
  
          // when 
          var imageAfterRoundtrip = _Images.fromBase64(_Images.toBase64(bufferedImage));
          
          // then
          assertArrayEquals(getPixels(), _Images.toPixels(imageAfterRoundtrip));
      }
      
      // -- SAMPLER
      
      private int[][] getPixels() {
          final int[][] array = new int[10][10];
          array[0][0] = 0xFEFDFCFB;
          array[0][1] = 0x3F218A;
          array[0][3] = 0x123456;
          array[0][4] = 0x7FFFFF;
          array[0][5] = -0x7FFFFF;
          array[0][6] = -0x700000;
          return array;
      }
      
      private BufferedImage getBufferedImage() {
          return _Images.fromPixels(getPixels());
      }
      
  }
  