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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.metadata.jpeg;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
import com.drew.metadata.jpeg.HuffmanTablesDirectory.HuffmanTable;
import com.drew.metadata.jpeg.HuffmanTablesDirectory.HuffmanTable.HuffmanTableClass;
/**
* @author Nadahar
*/
public class HuffmanTablesDirectoryTest
{
private HuffmanTablesDirectory _directory;
@Before
public void setUp()
{
_directory = new HuffmanTablesDirectory();
}
@Test
public void testSetAndGetValue() throws Exception
{
_directory.setInt(32, 8);
assertEquals(8, _directory.getInt(32));
}
@Test
public void testGetComponent_NotAdded()
{
try {
_directory.getTable(1);
fail();
} catch (IndexOutOfBoundsException e) {
// Expected exception
}
}
@Test
public void testGetNumberOfTables() throws Exception
{
_directory.setInt(HuffmanTablesDirectory.TAG_NUMBER_OF_TABLES, 9);
assertEquals(9,_directory.getNumberOfTables());
assertEquals("9 Huffman tables", _directory.getDescription(HuffmanTablesDirectory.TAG_NUMBER_OF_TABLES));
}
@Test
public void testIsTypical() throws Exception
{
_directory.tables.add(new HuffmanTable(
HuffmanTableClass.AC,
0,
HuffmanTablesDirectory.TYPICAL_CHROMINANCE_AC_LENGTHS,
HuffmanTablesDirectory.TYPICAL_CHROMINANCE_AC_VALUES
));
_directory.tables.add(new HuffmanTable(
HuffmanTableClass.DC,
0,
HuffmanTablesDirectory.TYPICAL_LUMINANCE_DC_LENGTHS,
HuffmanTablesDirectory.TYPICAL_LUMINANCE_DC_VALUES
));
assertTrue(_directory.getTable(0).isTypical());
assertFalse(_directory.getTable(0).isOptimized());
assertTrue(_directory.getTable(1).isTypical());
assertFalse(_directory.getTable(1).isOptimized());
assertTrue(_directory.isTypical());
assertFalse(_directory.isOptimized());
}
}
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