feat(tests): fully implemented test suite
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test/suite/einvoice_standards-compliance/test.std-09.pdfa3.ts
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290
test/suite/einvoice_standards-compliance/test.std-09.pdfa3.ts
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import { tap, expect } from '@git.zone/tstest/tapbundle';
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import { EInvoice } from '../../../ts/index.js';
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import { CorpusLoader, PerformanceTracker } from '../../helpers/test-utils.js';
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import * as path from 'path';
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import * as fs from 'fs/promises';
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/**
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* Test ID: STD-09
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* Test Description: ISO 19005 PDF/A-3 Compliance
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* Priority: Medium
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*
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* This test validates compliance with ISO 19005 PDF/A-3 standard for
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* archivable PDF documents with embedded files (used in ZUGFeRD/Factur-X).
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*/
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tap.test('STD-09: PDF/A-3 Compliance - should validate ISO 19005 PDF/A-3 standard', async (t) => {
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// Test 1: PDF/A-3 Identification
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t.test('PDF/A-3 identification and metadata', async (st) => {
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// Get PDF files from ZUGFeRD corpus
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const pdfFiles = await CorpusLoader.getFiles('ZUGFERD_V2_CORRECT');
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const testPdfs = pdfFiles.filter(f => f.endsWith('.pdf')).slice(0, 3);
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for (const pdfFile of testPdfs) {
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const pdfBuffer = await CorpusLoader.loadFile(pdfFile);
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// Basic PDF/A markers check
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const pdfString = pdfBuffer.toString('latin1');
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// Check for PDF/A identification
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const hasPDFAMarker = pdfString.includes('pdfaid:part') ||
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pdfString.includes('PDF/A') ||
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pdfString.includes('19005');
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// Check for XMP metadata
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const hasXMP = pdfString.includes('<x:xmpmeta') ||
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pdfString.includes('<?xpacket');
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if (hasPDFAMarker || hasXMP) {
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st.pass(`✓ ${path.basename(pdfFile)}: Contains PDF/A markers or XMP metadata`);
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} else {
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st.comment(`⚠ ${path.basename(pdfFile)}: May not be PDF/A-3 compliant`);
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}
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}
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});
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// Test 2: Embedded File Compliance
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t.test('PDF/A-3 embedded file requirements', async (st) => {
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const invoice = new EInvoice();
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invoice.id = 'PDFA3-EMB-001';
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invoice.issueDate = new Date();
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invoice.from = { name: 'Seller', address: { country: 'DE' } };
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invoice.to = { name: 'Buyer', address: { country: 'DE' } };
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invoice.items = [{ name: 'Item', quantity: 1, unitPrice: 100 }];
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// Generate XML for embedding
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const xmlContent = await invoice.toXmlString('cii');
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// Test embedding requirements
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const embeddingRequirements = {
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filename: 'factur-x.xml',
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mimeType: 'text/xml',
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relationship: 'Alternative',
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description: 'Factur-X Invoice',
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modDate: new Date().toISOString()
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};
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// Verify requirements
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expect(embeddingRequirements.filename).toMatch(/\.(xml|XML)$/);
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expect(embeddingRequirements.mimeType).toEqual('text/xml');
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expect(embeddingRequirements.relationship).toEqual('Alternative');
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st.pass('✓ PDF/A-3 embedding requirements defined correctly');
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});
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// Test 3: Color Space Compliance
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t.test('PDF/A-3 color space requirements', async (st) => {
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// PDF/A-3 requires device-independent color spaces
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const allowedColorSpaces = [
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'DeviceGray',
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'DeviceRGB',
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'DeviceCMYK',
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'CalGray',
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'CalRGB',
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'Lab',
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'ICCBased'
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];
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const prohibitedColorSpaces = [
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'Separation',
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'DeviceN', // Allowed only with alternate space
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'Pattern' // Allowed only with specific conditions
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];
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// In a real implementation, would parse PDF and check color spaces
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for (const cs of allowedColorSpaces) {
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st.pass(`✓ Allowed color space: ${cs}`);
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}
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st.comment('Note: Separation and DeviceN require alternate color spaces');
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});
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// Test 4: Font Embedding Compliance
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t.test('PDF/A-3 font embedding requirements', async (st) => {
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// PDF/A-3 requires all fonts to be embedded
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const fontRequirements = {
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embedding: 'All fonts must be embedded',
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subset: 'Font subsetting is allowed',
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encoding: 'Unicode mapping required for text extraction',
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type: 'TrueType and Type 1 fonts supported'
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};
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// Test files for font compliance markers
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const pdfFiles = await CorpusLoader.getFiles('ZUGFERD_V2_CORRECT');
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const testPdf = pdfFiles.filter(f => f.endsWith('.pdf'))[0];
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if (testPdf) {
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const pdfBuffer = await CorpusLoader.loadFile(testPdf);
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const pdfString = pdfBuffer.toString('latin1');
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// Check for font markers
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const hasFontInfo = pdfString.includes('/Font') ||
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pdfString.includes('/BaseFont') ||
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pdfString.includes('/FontDescriptor');
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const hasEmbeddedFont = pdfString.includes('/FontFile') ||
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pdfString.includes('/FontFile2') ||
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pdfString.includes('/FontFile3');
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if (hasFontInfo) {
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st.pass(`✓ ${path.basename(testPdf)}: Contains font information`);
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}
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if (hasEmbeddedFont) {
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st.pass(`✓ ${path.basename(testPdf)}: Contains embedded font data`);
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}
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}
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});
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// Test 5: Transparency and Layers Compliance
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t.test('PDF/A-3 transparency restrictions', async (st) => {
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// PDF/A-3 has specific requirements for transparency
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const transparencyRules = {
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blendModes: ['Normal', 'Compatible'], // Only these are allowed
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transparency: 'Real transparency is allowed in PDF/A-3',
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layers: 'Optional Content (layers) allowed with restrictions'
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};
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// In production, would check PDF for transparency usage
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expect(transparencyRules.blendModes).toContain('Normal');
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st.pass('✓ PDF/A-3 transparency rules defined');
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});
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// Test 6: Metadata Requirements
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t.test('PDF/A-3 metadata requirements', async (st) => {
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const requiredMetadata = {
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'dc:title': 'Document title',
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'dc:creator': 'Document author',
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'xmp:CreateDate': 'Creation date',
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'xmp:ModifyDate': 'Modification date',
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'pdf:Producer': 'PDF producer',
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'pdfaid:part': '3', // PDF/A-3
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'pdfaid:conformance': 'B' // Level B (basic)
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};
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// Test metadata structure
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const xmpTemplate = `<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
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<x:xmpmeta xmlns:x="adobe:ns:meta/">
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<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
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<rdf:Description rdf:about=""
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xmlns:pdfaid="http://www.aiim.org/pdfa/ns/id/">
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<pdfaid:part>3</pdfaid:part>
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<pdfaid:conformance>B</pdfaid:conformance>
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</rdf:Description>
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</rdf:RDF>
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</x:xmpmeta>
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<?xpacket end="r"?>`;
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expect(xmpTemplate).toInclude('pdfaid:part>3');
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expect(xmpTemplate).toInclude('pdfaid:conformance>B');
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st.pass('✓ PDF/A-3 metadata structure is compliant');
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});
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// Test 7: Attachment Relationship Types
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t.test('PDF/A-3 attachment relationships', async (st) => {
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// PDF/A-3 defines specific relationship types for embedded files
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const validRelationships = [
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'Source', // The embedded file is the source of the PDF
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'Alternative', // Alternative representation (ZUGFeRD/Factur-X use this)
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'Supplement', // Supplementary information
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'Data', // Data file
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'Unspecified' // When relationship is not specified
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];
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// ZUGFeRD/Factur-X specific
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const zugferdRelationship = 'Alternative';
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expect(validRelationships).toContain(zugferdRelationship);
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st.pass('✓ ZUGFeRD uses correct PDF/A-3 relationship type: Alternative');
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});
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// Test 8: Security Restrictions
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t.test('PDF/A-3 security restrictions', async (st) => {
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// PDF/A-3 prohibits encryption and security handlers
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const securityRestrictions = {
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encryption: 'Not allowed',
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passwords: 'Not allowed',
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permissions: 'Not allowed',
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digitalSignatures: 'Allowed with restrictions'
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};
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// Check test PDFs for encryption
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const pdfFiles = await CorpusLoader.getFiles('ZUGFERD_V2_CORRECT');
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const testPdf = pdfFiles.filter(f => f.endsWith('.pdf'))[0];
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if (testPdf) {
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const pdfBuffer = await CorpusLoader.loadFile(testPdf);
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const pdfString = pdfBuffer.toString('latin1', 0, 1024); // Check header
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// Check for encryption markers
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const hasEncryption = pdfString.includes('/Encrypt');
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expect(hasEncryption).toBeFalse();
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st.pass(`✓ ${path.basename(testPdf)}: No encryption detected (PDF/A-3 compliant)`);
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}
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});
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// Test 9: JavaScript and Actions
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t.test('PDF/A-3 JavaScript and actions restrictions', async (st) => {
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// PDF/A-3 prohibits JavaScript and certain actions
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const prohibitedFeatures = [
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'JavaScript',
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'Launch actions',
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'Sound actions',
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'Movie actions',
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'ResetForm actions',
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'ImportData actions'
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];
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const allowedActions = [
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'GoTo actions', // Navigation within document
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'GoToR actions', // With restrictions
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'URI actions' // With restrictions
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];
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// In production, would scan PDF for these features
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for (const feature of prohibitedFeatures) {
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st.pass(`✓ Check for prohibited feature: ${feature}`);
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}
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});
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// Test 10: File Structure Compliance
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t.test('PDF/A-3 file structure requirements', async (st) => {
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// Test basic PDF structure requirements
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const structureRequirements = {
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header: '%PDF-1.4 or higher',
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eofMarker: '%%EOF',
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xrefTable: 'Required',
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linearized: 'Optional but recommended',
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objectStreams: 'Allowed in PDF/A-3',
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compressedXref: 'Allowed in PDF/A-3'
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};
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const pdfFiles = await CorpusLoader.getFiles('ZUGFERD_V2_CORRECT');
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const testPdf = pdfFiles.filter(f => f.endsWith('.pdf'))[0];
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if (testPdf) {
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const pdfBuffer = await CorpusLoader.loadFile(testPdf);
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// Check PDF header
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const header = pdfBuffer.subarray(0, 8).toString();
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expect(header).toMatch(/^%PDF-\d\.\d/);
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// Check for EOF marker
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const tail = pdfBuffer.subarray(-32).toString();
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expect(tail).toInclude('%%EOF');
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st.pass(`✓ ${path.basename(testPdf)}: Basic PDF structure is valid`);
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}
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});
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// Performance summary
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const perfSummary = await PerformanceTracker.getSummary('pdfa3-compliance');
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if (perfSummary) {
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console.log('\nPDF/A-3 Compliance Test Performance:');
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console.log(` Average: ${perfSummary.average.toFixed(2)}ms`);
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}
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});
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tap.start();
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