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/*
* Copyright 2002-2017 Drew Noakes
*
* 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.
*
* More information about this project is available at:
*
* https://drewnoakes.com/code/exif/
* https://github.com/drewnoakes/metadata-extractor
*/
package com.drew.imaging.jpeg;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* @author Drew Noakes https://drewnoakes.com
*/
@SuppressWarnings({ "ConstantConditions" })
public class JpegSegmentDataTest
{
@Test
public void testAddAndGetSegment() throws Exception
{
JpegSegmentData segmentData = new JpegSegmentData();
byte segmentMarker = (byte)12;
byte[] segmentBytes = new byte[] { 1,2,3 };
segmentData.addSegment(segmentMarker, segmentBytes);
assertEquals(1, segmentData.getSegmentCount(segmentMarker));
assertArrayEquals(segmentBytes, segmentData.getSegment(segmentMarker));
}
@Test
public void testContainsSegment() throws Exception
{
JpegSegmentData segmentData = new JpegSegmentData();
byte segmentMarker = (byte)12;
byte[] segmentBytes = new byte[] { 1,2,3 };
assertTrue(!segmentData.containsSegment(segmentMarker));
segmentData.addSegment(segmentMarker, segmentBytes);
assertTrue(segmentData.containsSegment(segmentMarker));
}
@Test
public void testAddingMultipleSegments() throws Exception
{
JpegSegmentData segmentData = new JpegSegmentData();
byte segmentMarker1 = (byte)12;
byte segmentMarker2 = (byte)21;
byte[] segmentBytes1 = new byte[] { 1,2,3 };
byte[] segmentBytes2 = new byte[] { 3,2,1 };
segmentData.addSegment(segmentMarker1, segmentBytes1);
segmentData.addSegment(segmentMarker2, segmentBytes2);
assertEquals(1, segmentData.getSegmentCount(segmentMarker1));
assertEquals(1, segmentData.getSegmentCount(segmentMarker2));
assertArrayEquals(segmentBytes1, segmentData.getSegment(segmentMarker1));
assertArrayEquals(segmentBytes2, segmentData.getSegment(segmentMarker2));
}
@Test
public void testSegmentWithMultipleOccurrences() throws Exception
{
JpegSegmentData segmentData = new JpegSegmentData();
byte segmentMarker = (byte)12;
byte[] segmentBytes1 = new byte[] { 1,2,3 };
byte[] segmentBytes2 = new byte[] { 3,2,1 };
segmentData.addSegment(segmentMarker, segmentBytes1);
segmentData.addSegment(segmentMarker, segmentBytes2);
assertEquals(2, segmentData.getSegmentCount(segmentMarker));
assertArrayEquals(segmentBytes1, segmentData.getSegment(segmentMarker));
assertArrayEquals(segmentBytes1, segmentData.getSegment(segmentMarker, 0));
assertArrayEquals(segmentBytes2, segmentData.getSegment(segmentMarker, 1));
}
@Test
public void testRemoveSegmentOccurrence() throws Exception
{
JpegSegmentData segmentData = new JpegSegmentData();
byte segmentMarker = (byte)12;
byte[] segmentBytes1 = new byte[] { 1,2,3 };
byte[] segmentBytes2 = new byte[] { 3,2,1 };
segmentData.addSegment(segmentMarker, segmentBytes1);
segmentData.addSegment(segmentMarker, segmentBytes2);
assertEquals(2, segmentData.getSegmentCount(segmentMarker));
assertArrayEquals(segmentBytes1, segmentData.getSegment(segmentMarker, 0));
segmentData.removeSegmentOccurrence(segmentMarker, 0);
assertArrayEquals(segmentBytes2, segmentData.getSegment(segmentMarker, 0));
}
@Test
public void testRemoveSegment() throws Exception
{
JpegSegmentData segmentData = new JpegSegmentData();
byte segmentMarker = (byte)12;
byte[] segmentBytes1 = new byte[] { 1,2,3 };
byte[] segmentBytes2 = new byte[] { 3,2,1 };
segmentData.addSegment(segmentMarker, segmentBytes1);
segmentData.addSegment(segmentMarker, segmentBytes2);
assertEquals(2, segmentData.getSegmentCount(segmentMarker));
assertTrue(segmentData.containsSegment(segmentMarker));
assertArrayEquals(segmentBytes1, segmentData.getSegment(segmentMarker, 0));
segmentData.removeSegment(segmentMarker);
assertTrue(!segmentData.containsSegment(segmentMarker));
assertEquals(0, segmentData.getSegmentCount(segmentMarker));
}
}
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