LZWDecodeFilterTest.java

/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2025 Apryse Group NV
    Authors: Apryse Software.

    This program is offered under a commercial and under the AGPL license.
    For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

    AGPL licensing:
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package com.itextpdf.kernel.pdf.filters;

import com.itextpdf.kernel.pdf.PdfDictionary;
import com.itextpdf.test.ExtendedITextTest;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.Tag;

@Tag("UnitTest")
public class LZWDecodeFilterTest extends ExtendedITextTest {

    @Test
    public void decodingTestStatic() {
        byte[] bytes = {(byte) 0x80, 0x0B, 0x60, 0x50, 0x22, 0x0C, 0x0C, (byte) 0x85, 0x01};
        String expectedResult = "-----A---B";

        String decoded = new String(LZWDecodeFilter.LZWDecode(bytes));
        Assertions.assertEquals(expectedResult, decoded);
    }

    @Test
    public void decodingTestNonStatic() {
        byte[] bytes = {(byte) 0x80, 0x0B, 0x60, 0x50, 0x22, 0x0C, 0x0C, (byte) 0x85, 0x01};
        String expectedResult = "-----A---B";

        LZWDecodeFilter filter = new LZWDecodeFilter();
        String decoded = new String(filter.decode(bytes,null, new PdfDictionary(),
                new PdfDictionary()));
        Assertions.assertEquals(expectedResult, decoded);
    }

}