FontUtilTest.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.font;

import com.itextpdf.io.font.cmap.CMapToUnicode;
import com.itextpdf.io.logs.IoLogMessageConstant;
import com.itextpdf.io.source.ByteArrayOutputStream;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfStream;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.test.ExtendedITextTest;
import com.itextpdf.test.LogLevelConstants;
import com.itextpdf.test.annotations.LogMessage;
import com.itextpdf.test.annotations.LogMessages;

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

@Tag("UnitTest")
public class FontUtilTest extends ExtendedITextTest {
    @Test
    public void parseUniversalNotExistedCMapTest() {
        Assertions.assertNull(FontUtil.parseUniversalToUnicodeCMap("NotExisted"));
    }

    @Test
    @LogMessages(messages = {
            @LogMessage(messageTemplate = IoLogMessageConstant.UNKNOWN_ERROR_WHILE_PROCESSING_CMAP, logLevel = LogLevelConstants.ERROR)
    })
    public void processInvalidToUnicodeTest() {
        PdfStream toUnicode = new PdfStream();
        try (PdfDocument pdfDocument = new PdfDocument(new PdfWriter(new ByteArrayOutputStream()))) {
            toUnicode.makeIndirect(pdfDocument);
            toUnicode.flush();
            final CMapToUnicode cmap = FontUtil.processToUnicode(toUnicode);
            Assertions.assertNotNull(cmap);
            Assertions.assertFalse(cmap.hasByteMappings());
        }
    }
}