/*
    * 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.commons.imaging.formats.png.transparencyfilters;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.fail;
  
  import org.apache.commons.imaging.ImagingConstants;
  import org.junit.jupiter.api.Test;
  
  public class TransparencyFilterIndexedColorTest {
  
      @Test
      public void testFilterWithNegativeAndNegative() {
          final byte[] byteArray = ImagingConstants.EMPTY_BYTE_ARRAY;
          final TransparencyFilterIndexedColor transparencyFilterIndexedColor = new TransparencyFilterIndexedColor(byteArray);
  
          try {
              transparencyFilterIndexedColor.filter(-416, -398);
              fail("Expecting exception: Exception");
          } catch (final Exception e) {
              assertEquals("TransparencyFilterIndexedColor index: -398, bytes.length: 0", e.getMessage());
              assertEquals(TransparencyFilterIndexedColor.class.getName(), e.getStackTrace()[0].getClassName());
          }
      }
  
  }