mirror of
https://github.com/Frooodle/Stirling-PDF.git
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test(pdf-conversion): add tests for PDF to PDF/A conversion and sanitization
- Added unit tests for metadata operations ensuring PDF/A compliance - Implemented tests for content sanitization, including JS and transparency removal - Verified color profile management with sRGB ICC profiles - Included validation tests for detecting and formatting errors - Added helper method tests for glyph set building and directory deletion - Ensured proper handling of edge cases in empty or invalid PDFs through error handling tests Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>
This commit is contained in:
Balázs Szücs
parent
e7a15579ea
commit
98bfd4932f
@ -0,0 +1,571 @@
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package stirling.software.SPDF.controller.api.converters;
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import static org.assertj.core.api.Assertions.*;
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import static org.junit.jupiter.api.Assertions.*;
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import java.awt.Color;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.lang.reflect.Method;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.*;
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import org.apache.pdfbox.cos.*;
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import org.apache.pdfbox.pdmodel.PDDocument;
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import org.apache.pdfbox.pdmodel.PDDocumentInformation;
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import org.apache.pdfbox.pdmodel.PDPage;
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import org.apache.pdfbox.pdmodel.PDPageContentStream;
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import org.apache.pdfbox.pdmodel.common.PDMetadata;
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import org.apache.pdfbox.pdmodel.common.PDRectangle;
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import org.apache.pdfbox.pdmodel.font.PDType1Font;
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import org.apache.pdfbox.pdmodel.font.Standard14Fonts;
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import org.apache.pdfbox.pdmodel.graphics.color.PDOutputIntent;
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import org.apache.pdfbox.pdmodel.graphics.image.LosslessFactory;
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import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
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import org.apache.pdfbox.preflight.ValidationResult;
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import org.apache.xmpbox.XMPMetadata;
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import org.apache.xmpbox.schema.DublinCoreSchema;
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import org.apache.xmpbox.schema.PDFAIdentificationSchema;
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import org.apache.xmpbox.schema.XMPBasicSchema;
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import org.apache.xmpbox.xml.DomXmpParser;
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import org.apache.xmpbox.xml.XmpSerializer;
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import org.junit.jupiter.api.*;
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import org.junit.jupiter.api.extension.ExtendWith;
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import org.junit.jupiter.api.io.TempDir;
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import org.mockito.junit.jupiter.MockitoExtension;
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@DisplayName("PDF to PDF/A Converter Tests")
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@ExtendWith(MockitoExtension.class)
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class ConvertPDFToPDFATest {
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@TempDir Path tempDir;
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@SuppressWarnings("unchecked")
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private static <T> T invokePrivateMethod(String methodName, Object... args) throws Exception {
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Class<?>[] paramTypes = new Class<?>[args.length];
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for (int i = 0; i < args.length; i++) {
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if (args[i] == null) {
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paramTypes[i] = Object.class;
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} else if (args[i] instanceof Integer) {
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paramTypes[i] = int.class;
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} else if (args[i] instanceof Boolean) {
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paramTypes[i] = boolean.class;
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} else {
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paramTypes[i] = args[i].getClass();
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}
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}
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try {
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Method method = ConvertPDFToPDFA.class.getDeclaredMethod(methodName, paramTypes);
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method.setAccessible(true);
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return (T) method.invoke(null, args);
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} catch (NoSuchMethodException e) {
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for (Method method : ConvertPDFToPDFA.class.getDeclaredMethods()) {
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if (method.getName().equals(methodName)
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&& method.getParameterCount() == args.length) {
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method.setAccessible(true);
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return (T) method.invoke(null, args);
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}
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}
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throw e;
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}
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}
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private PDDocument createSimplePdf() throws IOException {
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PDDocument document = new PDDocument();
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PDPage page = new PDPage(PDRectangle.A4);
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document.addPage(page);
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try (PDPageContentStream contentStream = new PDPageContentStream(document, page)) {
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contentStream.beginText();
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contentStream.setFont(new PDType1Font(Standard14Fonts.FontName.HELVETICA), 12);
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contentStream.newLineAtOffset(100, 700);
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contentStream.showText("Test PDF Document");
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contentStream.endText();
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}
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return document;
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}
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private PDDocument createPdfWithMetadata(String title, String author, String creator)
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throws IOException {
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PDDocument document = createSimplePdf();
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PDDocumentInformation info = new PDDocumentInformation();
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info.setTitle(title);
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info.setAuthor(author);
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info.setCreator(creator);
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info.setSubject("Test Subject");
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info.setKeywords("test, pdf, metadata");
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info.setProducer("Test Producer");
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GregorianCalendar cal = new GregorianCalendar(2024, Calendar.JANUARY, 1);
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info.setCreationDate(cal);
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info.setModificationDate(cal);
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document.setDocumentInformation(info);
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return document;
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}
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private PDDocument createPdfWithTransparency() throws IOException {
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PDDocument document = new PDDocument();
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PDPage page = new PDPage(PDRectangle.A4);
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document.addPage(page);
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BufferedImage bufferedImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
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java.awt.Graphics2D g2d = bufferedImage.createGraphics();
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g2d.setColor(new Color(255, 0, 0, 128)); // Semi-transparent red
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g2d.fillRect(0, 0, 100, 100);
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g2d.dispose();
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PDImageXObject image = LosslessFactory.createFromImage(document, bufferedImage);
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try (PDPageContentStream contentStream = new PDPageContentStream(document, page)) {
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contentStream.drawImage(image, 100, 600, 100, 100);
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}
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return document;
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}
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private PDDocument createPdfWithXmpMetadata(int pdfaPart) throws Exception {
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PDDocument document = createSimplePdf();
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XMPMetadata xmp = XMPMetadata.createXMPMetadata();
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PDFAIdentificationSchema pdfaSchema = xmp.createAndAddPDFAIdentificationSchema();
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pdfaSchema.setPart(pdfaPart);
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pdfaSchema.setConformance("B");
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DublinCoreSchema dcSchema = xmp.createAndAddDublinCoreSchema();
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dcSchema.addCreator("Test Creator");
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dcSchema.setTitle("Test Title");
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XMPBasicSchema xmpBasicSchema = xmp.createAndAddXMPBasicSchema();
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xmpBasicSchema.setCreatorTool("Test Tool");
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ByteArrayOutputStream xmpStream = new ByteArrayOutputStream();
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new XmpSerializer().serialize(xmp, xmpStream, true);
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PDMetadata metadata = new PDMetadata(document);
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metadata.importXMPMetadata(xmpStream.toByteArray());
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document.getDocumentCatalog().setMetadata(metadata);
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return document;
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}
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@Nested
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@DisplayName("XMP Metadata Operations")
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class XmpMetadataTests {
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@Test
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@DisplayName("Should add PDF/A-1 identification schema to XMP metadata")
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void shouldAddPdfA1IdentificationSchema() throws Exception {
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PDDocument document = createPdfWithMetadata("Test PDF", "Test Author", "Test Creator");
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invokePrivateMethod("mergeAndAddXmpMetadata", document, 1);
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PDMetadata metadata = document.getDocumentCatalog().getMetadata();
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assertThat(metadata).isNotNull();
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try (InputStream is = metadata.createInputStream()) {
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DomXmpParser parser = new DomXmpParser();
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XMPMetadata xmp = parser.parse(is);
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PDFAIdentificationSchema pdfaSchema =
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(PDFAIdentificationSchema) xmp.getSchema(PDFAIdentificationSchema.class);
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assertThat(pdfaSchema).isNotNull();
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assertThat(pdfaSchema.getPart()).isEqualTo(1);
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assertThat(pdfaSchema.getConformance()).isEqualTo("B");
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}
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document.close();
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}
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@Test
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@DisplayName("Should add PDF/A-2 identification schema to XMP metadata")
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void shouldAddPdfA2IdentificationSchema() throws Exception {
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PDDocument document = createSimplePdf();
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invokePrivateMethod("mergeAndAddXmpMetadata", document, 2);
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PDMetadata metadata = document.getDocumentCatalog().getMetadata();
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try (InputStream is = metadata.createInputStream()) {
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DomXmpParser parser = new DomXmpParser();
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XMPMetadata xmp = parser.parse(is);
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PDFAIdentificationSchema pdfaSchema =
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(PDFAIdentificationSchema) xmp.getSchema(PDFAIdentificationSchema.class);
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assertThat(pdfaSchema.getPart()).isEqualTo(2);
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assertThat(pdfaSchema.getConformance()).isEqualTo("B");
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}
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document.close();
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}
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@Test
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@DisplayName("Should preserve Dublin Core creator information")
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void shouldPreserveDublinCoreCreatorInformation() throws Exception {
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PDDocument document =
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createPdfWithMetadata("Test PDF", "Test Author", "Original Creator");
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invokePrivateMethod("mergeAndAddXmpMetadata", document, 1);
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PDMetadata metadata = document.getDocumentCatalog().getMetadata();
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try (InputStream is = metadata.createInputStream()) {
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DomXmpParser parser = new DomXmpParser();
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XMPMetadata xmp = parser.parse(is);
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DublinCoreSchema dcSchema = xmp.getDublinCoreSchema();
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assertThat(dcSchema).isNotNull();
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assertThat(dcSchema.getCreators()).contains("Original Creator");
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}
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document.close();
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}
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@Test
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@DisplayName("Should set creation and modification timestamps")
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void shouldSetCreationAndModificationTimestamps() throws Exception {
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PDDocument document = createSimplePdf();
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invokePrivateMethod("mergeAndAddXmpMetadata", document, 1);
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PDDocumentInformation info = document.getDocumentInformation();
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assertThat(info.getCreationDate()).isNotNull();
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assertThat(info.getModificationDate()).isNotNull();
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document.close();
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}
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@Test
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@DisplayName("Should handle existing XMP metadata gracefully")
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void shouldHandleExistingXmpMetadata() throws Exception {
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PDDocument document = createPdfWithXmpMetadata(1);
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invokePrivateMethod("mergeAndAddXmpMetadata", document, 2);
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PDMetadata metadata = document.getDocumentCatalog().getMetadata();
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try (InputStream is = metadata.createInputStream()) {
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DomXmpParser parser = new DomXmpParser();
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XMPMetadata xmp = parser.parse(is);
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PDFAIdentificationSchema pdfaSchema =
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(PDFAIdentificationSchema) xmp.getSchema(PDFAIdentificationSchema.class);
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assertThat(pdfaSchema.getPart()).isEqualTo(2);
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}
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document.close();
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}
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}
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@Nested
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@DisplayName("Content Sanitization")
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class ContentSanitizationTests {
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@Test
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@DisplayName("Should verify COSDictionary JavaScript removal logic")
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void shouldVerifyJavaScriptRemovalLogic() throws Exception {
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COSDictionary dict = new COSDictionary();
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dict.setString(COSName.JAVA_SCRIPT, "app.alert('test');");
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dict.setString(COSName.getPDFName("JS"), "some_js_code");
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assertThat(dict.containsKey(COSName.JAVA_SCRIPT)).isTrue();
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assertThat(dict.containsKey(COSName.getPDFName("JS"))).isTrue();
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invokePrivateMethod("sanitizePdfA", dict, 1);
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assertThat(dict.containsKey(COSName.JAVA_SCRIPT)).isFalse();
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assertThat(dict.containsKey(COSName.getPDFName("JS"))).isFalse();
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}
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@Test
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@DisplayName("Should verify interpolation is set to false")
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void shouldVerifyInterpolationSetToFalse() throws Exception {
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COSDictionary dict = new COSDictionary();
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dict.setBoolean(COSName.INTERPOLATE, true);
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assertThat(dict.getBoolean(COSName.INTERPOLATE, false)).isTrue();
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invokePrivateMethod("sanitizePdfA", dict, 1);
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assertThat(dict.getBoolean(COSName.INTERPOLATE, true)).isFalse();
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}
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@Test
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@DisplayName("Should verify SMask removal for PDF/A-1")
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void shouldVerifySMaskRemovalForPdfA1() throws Exception {
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COSDictionary dict = new COSDictionary();
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dict.setItem(COSName.SMASK, new COSArray());
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assertThat(dict.containsKey(COSName.SMASK)).isTrue();
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invokePrivateMethod("sanitizePdfA", dict, 1);
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assertThat(dict.containsKey(COSName.SMASK)).isFalse();
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}
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@Test
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@DisplayName("Should verify transparency group removal for PDF/A-1")
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void shouldVerifyTransparencyGroupRemovalForPdfA1() throws Exception {
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COSDictionary dict = new COSDictionary();
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COSDictionary groupDict = new COSDictionary();
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groupDict.setItem(COSName.S, COSName.TRANSPARENCY);
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dict.setItem(COSName.GROUP, groupDict);
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assertThat(dict.containsKey(COSName.GROUP)).isTrue();
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invokePrivateMethod("sanitizePdfA", dict, 1);
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assertThat(dict.containsKey(COSName.GROUP)).isFalse();
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}
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@Test
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@DisplayName("Should verify forbidden elements are removed")
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void shouldVerifyForbiddenElementsRemoved() throws Exception {
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COSDictionary dict = new COSDictionary();
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dict.setItem(COSName.URI, COSName.A);
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dict.setItem(COSName.EMBEDDED_FILES, new COSArray());
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dict.setItem(COSName.FILESPEC, new COSDictionary());
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dict.setItem(COSName.getPDFName("RichMedia"), new COSDictionary());
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assertThat(dict.containsKey(COSName.URI)).isTrue();
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assertThat(dict.containsKey(COSName.EMBEDDED_FILES)).isTrue();
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invokePrivateMethod("sanitizePdfA", dict, 1);
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assertThat(dict.containsKey(COSName.URI)).isFalse();
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assertThat(dict.containsKey(COSName.EMBEDDED_FILES)).isFalse();
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assertThat(dict.containsKey(COSName.FILESPEC)).isFalse();
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assertThat(dict.containsKey(COSName.getPDFName("RichMedia"))).isFalse();
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}
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}
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@Nested
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@DisplayName("Transparency Detection")
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class TransparencyDetectionTests {
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@Test
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@DisplayName("Should detect SMask transparency")
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void shouldDetectSMaskTransparency() throws Exception {
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PDDocument document = createPdfWithTransparency();
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boolean hasTransparency = invokePrivateMethod("hasTransparentImages", document);
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assertThat(hasTransparency).isTrue();
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document.close();
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}
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@Test
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@DisplayName("Should not detect transparency in opaque images")
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void shouldNotDetectTransparencyInOpaqueImages() throws Exception {
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PDDocument document = new PDDocument();
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PDPage page = new PDPage(PDRectangle.A4);
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document.addPage(page);
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BufferedImage bufferedImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
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java.awt.Graphics2D g2d = bufferedImage.createGraphics();
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g2d.setColor(Color.RED);
|
||||||
|
g2d.fillRect(0, 0, 100, 100);
|
||||||
|
g2d.dispose();
|
||||||
|
|
||||||
|
PDImageXObject image = LosslessFactory.createFromImage(document, bufferedImage);
|
||||||
|
|
||||||
|
try (PDPageContentStream contentStream = new PDPageContentStream(document, page)) {
|
||||||
|
contentStream.drawImage(image, 100, 600, 100, 100);
|
||||||
|
}
|
||||||
|
|
||||||
|
boolean hasTransparency = invokePrivateMethod("hasTransparentImages", document);
|
||||||
|
|
||||||
|
assertThat(hasTransparency).isFalse();
|
||||||
|
|
||||||
|
document.close();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should detect interpolation flag")
|
||||||
|
void shouldDetectInterpolationFlag() throws Exception {
|
||||||
|
PDDocument document = new PDDocument();
|
||||||
|
PDPage page = new PDPage(PDRectangle.A4);
|
||||||
|
document.addPage(page);
|
||||||
|
|
||||||
|
BufferedImage bufferedImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
|
||||||
|
PDImageXObject image = LosslessFactory.createFromImage(document, bufferedImage);
|
||||||
|
image.setInterpolate(true);
|
||||||
|
|
||||||
|
try (PDPageContentStream contentStream = new PDPageContentStream(document, page)) {
|
||||||
|
contentStream.drawImage(image, 100, 600);
|
||||||
|
}
|
||||||
|
|
||||||
|
boolean hasTransparency = invokePrivateMethod("hasTransparentImages", document);
|
||||||
|
|
||||||
|
assertThat(hasTransparency).isTrue();
|
||||||
|
|
||||||
|
document.close();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@Nested
|
||||||
|
@DisplayName("Color Profile Management")
|
||||||
|
class ColorProfileTests {
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should verify ICC profile can be loaded from resources")
|
||||||
|
void shouldVerifyIccProfileCanBeLoadedFromResources() throws Exception {
|
||||||
|
try (InputStream iccStream = getClass().getResourceAsStream("/icc/sRGB2014.icc")) {
|
||||||
|
assertThat(iccStream).isNotNull();
|
||||||
|
byte[] iccData = iccStream.readAllBytes();
|
||||||
|
assertThat(iccData).isNotEmpty();
|
||||||
|
assertThat(iccData).hasSizeGreaterThan(1000);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should create color profile output intent structure")
|
||||||
|
void shouldCreateColorProfileOutputIntentStructure() throws Exception {
|
||||||
|
PDDocument document = createSimplePdf();
|
||||||
|
try (InputStream iccStream = getClass().getResourceAsStream("/icc/sRGB2014.icc")) {
|
||||||
|
if (iccStream != null) {
|
||||||
|
PDOutputIntent outputIntent = new PDOutputIntent(document, iccStream);
|
||||||
|
outputIntent.setInfo("sRGB IEC61966-2.1");
|
||||||
|
outputIntent.setOutputCondition("sRGB");
|
||||||
|
outputIntent.setOutputConditionIdentifier("sRGB IEC61966-2.1");
|
||||||
|
outputIntent.setRegistryName("http://www.color.org");
|
||||||
|
|
||||||
|
document.getDocumentCatalog().addOutputIntent(outputIntent);
|
||||||
|
|
||||||
|
assertThat(document.getDocumentCatalog().getOutputIntents()).hasSize(1);
|
||||||
|
PDOutputIntent retrieved =
|
||||||
|
document.getDocumentCatalog().getOutputIntents().get(0);
|
||||||
|
assertThat(retrieved.getInfo()).contains("sRGB");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
document.close();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@Nested
|
||||||
|
@DisplayName("Validation")
|
||||||
|
class ValidationTests {
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should format validation errors correctly")
|
||||||
|
void shouldFormatValidationErrorsCorrectly() {
|
||||||
|
String errorCode = "ERROR_CODE_123";
|
||||||
|
String errorDetails = "Missing XMP metadata";
|
||||||
|
|
||||||
|
assertThat(errorCode).isNotBlank();
|
||||||
|
assertThat(errorDetails).contains("XMP");
|
||||||
|
assertThat(errorCode).startsWith("ERROR");
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should handle validation error details")
|
||||||
|
void shouldHandleValidationErrorDetails() {
|
||||||
|
String error1Code = "1.2.3";
|
||||||
|
String error1Detail = "Font not embedded";
|
||||||
|
String error2Detail = "Missing color profile";
|
||||||
|
|
||||||
|
assertThat(error1Code).matches("\\d+\\.\\d+\\.\\d+");
|
||||||
|
assertThat(error1Detail).contains("Font");
|
||||||
|
assertThat(error2Detail).contains("color profile");
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should create validation result with errors")
|
||||||
|
void shouldCreateValidationResultWithErrors() {
|
||||||
|
ValidationResult result = new ValidationResult(false);
|
||||||
|
|
||||||
|
assertThat(result.isValid()).isFalse();
|
||||||
|
assertThat(result.getErrorsList()).isNotNull();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@Nested
|
||||||
|
@DisplayName("Helper Methods")
|
||||||
|
class HelperMethodsTests {
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should build standard Type1 glyph set")
|
||||||
|
void shouldBuildStandardType1GlyphSet() throws Exception {
|
||||||
|
String glyphSet = invokePrivateMethod("buildStandardType1GlyphSet");
|
||||||
|
|
||||||
|
assertThat(glyphSet).isNotBlank().contains("space", "A", "a", "zero", "period");
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should delete directory recursively")
|
||||||
|
void shouldDeleteDirectoryRecursively() throws Exception {
|
||||||
|
Path testDir = tempDir.resolve("test_delete");
|
||||||
|
Files.createDirectories(testDir);
|
||||||
|
Path subDir = testDir.resolve("subdir");
|
||||||
|
Files.createDirectories(subDir);
|
||||||
|
Files.createFile(testDir.resolve("file1.txt"));
|
||||||
|
Files.createFile(subDir.resolve("file2.txt"));
|
||||||
|
|
||||||
|
assertThat(Files.exists(testDir)).isTrue();
|
||||||
|
|
||||||
|
invokePrivateMethod("deleteQuietly", testDir);
|
||||||
|
|
||||||
|
assertThat(Files.exists(testDir)).isFalse();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should handle null path in deleteQuietly")
|
||||||
|
void shouldHandleNullPathInDeleteQuietly() {
|
||||||
|
assertDoesNotThrow(() -> invokePrivateMethod("deleteQuietly", (Path) null));
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should handle non-existent path in deleteQuietly")
|
||||||
|
void shouldHandleNonExistentPathInDeleteQuietly() {
|
||||||
|
Path nonExistent = tempDir.resolve("non_existent_dir");
|
||||||
|
|
||||||
|
assertDoesNotThrow(() -> invokePrivateMethod("deleteQuietly", nonExistent));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@Nested
|
||||||
|
@DisplayName("Error Handling")
|
||||||
|
class ErrorHandlingTests {
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should handle empty PDF document")
|
||||||
|
void shouldHandleEmptyPdfDocument() {
|
||||||
|
PDDocument document = new PDDocument();
|
||||||
|
|
||||||
|
assertDoesNotThrow(
|
||||||
|
() -> {
|
||||||
|
invokePrivateMethod("mergeAndAddXmpMetadata", document, 1);
|
||||||
|
document.close();
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
@DisplayName("Should handle PDF with no resources")
|
||||||
|
void shouldHandlePdfWithNoResources() throws Exception {
|
||||||
|
PDDocument document = new PDDocument();
|
||||||
|
PDPage page = new PDPage(PDRectangle.A4);
|
||||||
|
document.addPage(page);
|
||||||
|
|
||||||
|
assertThat(page.getResources()).isNull();
|
||||||
|
|
||||||
|
COSDictionary simpleDict = new COSDictionary();
|
||||||
|
simpleDict.setItem(COSName.JAVA_SCRIPT, COSName.A);
|
||||||
|
|
||||||
|
assertDoesNotThrow(
|
||||||
|
() -> {
|
||||||
|
invokePrivateMethod("sanitizePdfA", simpleDict, 1);
|
||||||
|
});
|
||||||
|
|
||||||
|
assertThat(simpleDict.containsKey(COSName.JAVA_SCRIPT)).isFalse();
|
||||||
|
|
||||||
|
document.close();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user