Balázs Szücs 6461b93131
feat: add JUnit tests for EML to PDF conversion (#3806)
# Description of Changes

This PR introduces tests for EML-to-PDF feature, but indirectly tests
also HTML-to-PDF as well as Attachments feature.

- Adds JUnit tests for EML-to-PDF conversion, including scenarios with
file attachments, multipart, complex, CSS styled etc.. emails.
- Confirms that adding Angus Mail as a runtime dependency does not
introduce any issues or regressions.

PR is relevant after #3781

---

## Checklist

### General

- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/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/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] 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/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)

- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.
2025-06-25 18:33:50 +01:00
..
2025-06-09 12:51:41 +01:00
2025-06-24 23:52:17 +01:00