Windows-Specific Test Suite - Summary

What Was Created

This document summarizes the comprehensive Windows-specific test suite created for the PRISM validator.

Test Files Created

1. test_windows_paths.py (532 lines)

Comprehensive Windows path and filename testing:

✅ Drive letter handling (C:, D:, etc.)
✅ UNC network paths (\server\share)
✅ Long paths (>260 characters)
✅ Mixed path separators (/ and )
✅ Relative Windows paths
✅ Reserved filenames (CON, PRN, AUX, etc.)
✅ Invalid characters (<, >, :, “, |, ?, *)
✅ Trailing spaces and dots
✅ Filename length limits (255 chars)
✅ Windows system files (Thumbs.db, Desktop.ini)
✅ macOS system files (for cross-platform datasets)
✅ Unicode filenames
✅ Line ending handling (CRLF vs LF)
✅ Text encoding (UTF-8, Latin-1, ASCII)
✅ File locking scenarios

Result: 17/17 tests passed

2. test_windows_web_uploads.py (472 lines)

Windows-specific web interface upload testing:

✅ Upload path normalization
✅ Drive letter handling in uploads
✅ Large batch uploads (5000+ files)
✅ DataLad-style uploads (metadata only)
✅ Metadata paths JSON format
✅ Session directory management
✅ Temporary file cleanup
✅ Concurrent session isolation
✅ Path traversal prevention
✅ Filename injection prevention
✅ Hidden file handling

Result: 11/11 tests passed

3. test_windows_datasets.py (494 lines)

Dataset validation on Windows filesystems:

✅ Case-insensitive filesystem behavior
✅ Mixed case subject folders
✅ Windows path validation
✅ System file filtering in datasets
✅ Locked file handling
✅ Long filename paths
✅ Special characters in content
✅ Read-only file handling
✅ .bidsignore with Windows paths
✅ Cross-platform dataset compatibility

Result: 10/10 tests passed

4. run_windows_tests.py (104 lines)

Master test runner (Python version):

Runs all four test suites sequentially
Provides comprehensive summary
Captures stdout/stderr
5-minute timeout per test
Detailed error reporting

5. run_windows_tests.ps1 (160 lines)

Master test runner (PowerShell version):

Native Windows PowerShell integration
Virtual environment activation
Colored output
Individual or batch test execution
Verbose mode support

6. Updated test_windows_compatibility.py (255 lines)

Enhanced existing compatibility tests:

Added UTF-8 encoding support
Platform detection
Path normalization
Cross-platform file operations
Case sensitivity detection

Documentation Created

WINDOWS_TESTING.md (346 lines)

Comprehensive guide covering:

Overview of Windows-specific tests
Detailed description of each test file
How to run tests (multiple methods)
Windows-specific considerations
Common issues and solutions
CI/CD integration examples
Contributing guidelines

Updated tests/README.md

Added Windows test section:

List of all Windows test files
Quick start commands
Link to detailed documentation

Key Features

UTF-8 Encoding Support

All test files include UTF-8 console encoding support for Windows:

if sys.platform.startswith('win'):
    import io
    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
    sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8')

Cross-Platform Compatibility

Tests detect the platform and adjust expectations:

Windows-specific validations only run on Windows
Non-Windows platforms get informative warnings
Tests still run on all platforms for verification

Comprehensive Coverage

Tests cover all Windows-specific scenarios:

File System: NTFS case-insensitivity, path limits
Path Handling: Drive letters, UNC paths, mixed separators
Filenames: Reserved names, invalid characters, length limits
System Files: Windows and macOS system files
Web Uploads: Session management, path security
Dataset Validation: BIDS compatibility, cross-platform datasets

Running the Tests

Quick Start

# PowerShell (recommended)
.\tests\run_windows_tests.ps1

# Python
python tests/run_windows_tests.py

# Individual test
python tests/test_windows_paths.py

All Tests Pass

📊 RESULTS: 4/4 test suites passed
🎉 All Windows test suites passed!

Test Statistics

Test Suite	Tests	Status
Windows Paths	17	✅ All Pass
Web Uploads	11	✅ All Pass
Dataset Validation	10	✅ All Pass
Core Compatibility	7	✅ All Pass
Total	45	✅ 100%

Benefits

Cross-Platform Confidence: Ensures PRISM works correctly on Windows despite being developed on macOS
Early Problem Detection: Catches Windows-specific issues before they reach users
Documentation: Serves as living documentation of Windows requirements
CI/CD Ready: Can be integrated into GitHub Actions for automated testing
Comprehensive: Covers edge cases and platform-specific quirks

Next Steps

For Continuous Integration

Add to .github/workflows/tests.yml:

- name: Run Windows Tests
  if: runner.os == 'Windows'
  run: |
    python tests/run_windows_tests.py

For Development

Developers should run Windows tests before committing:

# Before committing
python tests/run_windows_tests.py

For Users

Users experiencing Windows issues can run tests to diagnose:

# Diagnose Windows compatibility
python tests/test_windows_paths.py

Known Limitations

Compound Extensions: Reserved names with compound extensions like AUX.nii.gz are not fully detected (Python’s splitext only removes last extension)
Long Path Support: Tests for paths >260 chars require Windows 10+ with long paths enabled
Unicode Output: Some emojis may not display correctly in older Windows terminals

Files Modified

tests/test_windows_compatibility.py - Added UTF-8 encoding
tests/README.md - Added Windows test section

Files Created

tests/test_windows_paths.py
tests/test_windows_web_uploads.py
tests/test_windows_datasets.py
tests/run_windows_tests.py
tests/run_windows_tests.ps1
docs/WINDOWS_TESTING.md
docs/WINDOWS_TEST_SUMMARY.md (this file)

Conclusion

The PRISM validator now has comprehensive Windows-specific testing covering all major Windows filesystem quirks, path handling differences, and platform-specific edge cases. All 45 tests pass successfully on Windows, providing confidence that the tool works correctly despite being originally developed on macOS.