[Phase 3] Testing, Documentation, and Performance Optimization

[vogella]

Description

Final phase tasks for testing, documentation updates, and performance optimization after LSP migration is complete.

Testing Tasks

Unit Tests

• Update existing test suite for LSP protocol testing
• Port tests from AsciidocContentAssistProcessorTests to LSP completion tests
• Port tests from IncludeHyperlinkDetectorTests to LSP document link tests
• Add LSP protocol-level tests (request/response validation)
• Test with headless Eclipse (Xvfb)

Integration Tests

• End-to-end testing in Eclipse IDE
• Test with multiple .adoc files open simultaneously
• Test with large documents (1000+ lines)
• Test cross-file navigation
• Test with broken references/files
• Performance benchmarking

Compatibility Testing

• Test with different Eclipse versions
• Test LSP4E version compatibility
• Test on Windows, Linux, macOS

Documentation Tasks

Update AGENTS.md

• Document new LSP architecture
• Update module descriptions
• Add LSP server configuration notes
• Update testing instructions

Code Documentation

• Add Javadoc to LSP server classes
• Document LSP capabilities and features
• Add inline comments for complex algorithms

User Documentation

• Update README if exists
• Document any new features vs. old implementation
• Migration guide for users (if needed)

Performance Optimization

Profiling

• Profile completion performance (file scanning)
• Profile document link generation
• Profile diagnostics validation
• Profile symbol extraction

Optimizations

• Implement caching where appropriate
• Debounce validation (avoid on every keystroke)
• Optimize file system access (batch operations)
• Consider incremental parsing for large documents
• Limit file walking depth/breadth

Monitoring

• Add logging for troubleshooting
• Monitor memory usage with many files
• Track LSP request/response times

Code Quality

• Run static analysis
• Fix any warnings
• Consistent code formatting
• Remove dead code
• Update dependencies to latest stable versions

Success Criteria

1. ✅ All tests pass on Java 21
2. ✅ No performance regression vs. old implementation
3. ✅ Documentation is complete and accurate
4. ✅ Clean build with no errors/warnings
5. ✅ Code quality meets project standards

Dependencies

• Depends on: All Phase 1 and Phase 2 issues
• Should be done after: [Phase 3] Remove Redundant Editor Implementations After LSP Migration #37 (code removal)

Priority: Low (final cleanup)

Estimated Effort: 1-2 weeks