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# Description of Changes Added 27 JUnit tests for getInfoOnPDF covering the following functionality: ### Basic Functionality - Valid PDF processing - Basic info extraction (file size, page count, word count) - Multi-page PDF handling ### Metadata Extraction - All metadata fields (title, author, dates, etc.) - Missing metadata handling ### Encryption & Permissions - Encryption detection - All permission types ### Form Fields - Form field structure - PDFs without forms ### Per-Page Information - Page dimensions and standard sizes (A4, Letter, etc.) - Page rotation ### Validation & Error Handling - Null file rejection - Empty file rejection - File size limit (100MB) validation ### Static Helper Methods - Page orientation detection (Landscape/Portrait/Square) - Page size identification (parameterized tests) - PDF/A standard checking - Conformance level extraction ### Real PDF Files - Testing with actual PDF files from resources ### Compliance Testing - PDF/A, PDF/X, PDF/E, PDF/UA compliance detection ### Image Statistics - Image statistics extraction <!-- Please provide a summary of the changes, including: - What was changed - Why the change was made - Any challenges encountered Closes #(issue_number) --> --- ## Checklist ### General - [ ] I have read the [Contribution Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md) - [ ] I have read the [Stirling-PDF Developer Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md) (if applicable) - [ ] I have read the [How to add new languages to Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md) (if applicable) - [ ] I have performed a self-review of my own code - [ ] My changes generate no new warnings ### Documentation - [ ] I have updated relevant docs on [Stirling-PDF's doc repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/) (if functionality has heavily changed) - [ ] I have read the section [Add New Translation Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags) (for new translation tags only) ### UI Changes (if applicable) - [ ] Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR) ### Testing (if applicable) - [ ] I have tested my changes locally. Refer to the [Testing Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing) for more details. --------- Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>