Add platform-independent test for PDFDocument with text rendering

Author: Copilot

tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/AllNonBrowserTests.java

@@ -71,6 +71,7 @@
 		Test_org_eclipse_swt_layout_BorderLayout.class, //
 		Test_org_eclipse_swt_layout_FormAttachment.class, //
 		Test_org_eclipse_swt_layout_GridData.class, //
+		Test_org_eclipse_swt_printing_PDFDocument.class, //
 		Test_org_eclipse_swt_printing_PrintDialog.class, //
 		Test_org_eclipse_swt_printing_Printer.class, //
 		Test_org_eclipse_swt_printing_PrinterData.class, //

tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_printing_PDFDocument.java

@@ -0,0 +1,151 @@
+/*******************************************************************************
+ * Copyright (c) 2025 Eclipse Platform Contributors and others.
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Eclipse Platform Contributors - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.tests.junit;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.printing.PDFDocument;
+import org.eclipse.swt.widgets.Display;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+/**
+ * Automated Test Suite for class org.eclipse.swt.printing.PDFDocument
+ *
+ * @see org.eclipse.swt.printing.PDFDocument
+ */
+public class Test_org_eclipse_swt_printing_PDFDocument {
+
+	Display display;
+	PDFDocument pdfDocument;
+	GC gc;
+	File tempFile;
+
+	@TempDir
+	Path tempDir;
+
+	@BeforeEach
+	public void setUp() {
+		display = Display.getDefault();
+	}
+
+	@AfterEach
+	public void tearDown() {
+		if (gc != null && !gc.isDisposed()) {
+			gc.dispose();
+		}
+		if (pdfDocument != null && !pdfDocument.isDisposed()) {
+			pdfDocument.dispose();
+		}
+		if (tempFile != null && tempFile.exists()) {
+			tempFile.delete();
+		}
+	}
+
+	@Test
+	public void test_createPDFDocumentWithHelloWorld() throws IOException {
+		// Create a temporary file for the PDF
+		tempFile = Files.createTempFile(tempDir, "test", ".pdf").toFile();
+		String filename = tempFile.getAbsolutePath();
+
+		// Create PDF document with standard letter size (612 x 792 points)
+		pdfDocument = new PDFDocument(filename, 612, 792);
+		assertNotNull(pdfDocument, "PDFDocument should be created");
+
+		// Create a GC on the PDF document
+		gc = new GC(pdfDocument);
+		assertNotNull(gc, "GC should be created on PDFDocument");
+
+		// Draw "hello world" text
+		gc.drawText("hello world", 100, 100);
+
+		// Dispose of resources to finalize the PDF
+		gc.dispose();
+		gc = null;
+		pdfDocument.dispose();
+		pdfDocument = null;
+
+		// Verify the PDF file was created and is not empty
+		assertTrue(tempFile.exists(), "PDF file should exist");
+		assertTrue(tempFile.length() > 0, "PDF file should not be empty");
+
+		// Verify PDF magic bytes and content
+		byte[] fileContent = Files.readAllBytes(tempFile.toPath());
+		assertTrue(fileContent.length >= 5, "PDF file should have at least 5 bytes for header");
+
+		// Check for PDF magic bytes: %PDF-
+		String headerString = new String(fileContent, 0, Math.min(5, fileContent.length));
+		assertTrue(headerString.startsWith("%PDF-"), 
+			"PDF file should start with %PDF- magic bytes, but got: " + headerString);
+
+		// Check if "hello world" appears in the PDF content
+		// Convert only as much as needed to search for the text
+		String content = new String(fileContent, 0, Math.min(fileContent.length, 10000));
+		assertTrue(content.contains("hello world"), 
+			"PDF content should contain 'hello world' text");
+	}
+
+	@Test
+	public void test_createPDFDocumentMultiplePages() throws IOException {
+		// Create a temporary file for the PDF
+		tempFile = Files.createTempFile(tempDir, "test_multipage", ".pdf").toFile();
+		String filename = tempFile.getAbsolutePath();
+
+		// Create PDF document
+		pdfDocument = new PDFDocument(filename, 612, 792);
+		gc = new GC(pdfDocument);
+
+		// Draw on first page
+		gc.drawText("Page 1", 100, 100);
+
+		// Create a new page
+		pdfDocument.newPage();
+
+		// Draw on second page
+		gc.drawText("Page 2", 100, 100);
+
+		// Dispose resources
+		gc.dispose();
+		gc = null;
+		pdfDocument.dispose();
+		pdfDocument = null;
+
+		// Verify the PDF file was created
+		assertTrue(tempFile.exists(), "PDF file should exist");
+		assertTrue(tempFile.length() > 0, "PDF file should not be empty");
+
+		// Verify PDF magic bytes and content
+		byte[] fileContent = Files.readAllBytes(tempFile.toPath());
+		assertTrue(fileContent.length >= 5, "PDF file should have at least 5 bytes for header");
+		String headerString = new String(fileContent, 0, Math.min(5, fileContent.length));
+		assertTrue(headerString.startsWith("%PDF-"), 
+			"PDF file should start with %PDF- magic bytes");
+
+		// Verify both page texts are present in the PDF
+		String content = new String(fileContent, 0, Math.min(fileContent.length, 10000));
+		assertTrue(content.contains("Page 1"), 
+			"PDF content should contain 'Page 1' text");
+		assertTrue(content.contains("Page 2"), 
+			"PDF content should contain 'Page 2' text");
+	}
+}