test(tools): comprehensive test suite for file_operations module (+51 tests)

[manus-use]

Summary

Comprehensive test suite for the file_operations module (src/manus_agent/tools/file_operations.py), which provides five core file utility functions used throughout the agent.

Test Coverage

file_read — 10 tests

• Text file reading (normal, multiline, empty, unicode, large 100KB)
• Binary file fallback (returns hex representation)
• Error handling: FileNotFoundError, ValueError for directories
• Tilde expansion, spaces in filenames

file_write — 9 tests

• Create new file, overwrite existing
• Nested parent directory creation (create_dirs=True)
• Error path when create_dirs=False with missing parent
• Empty/unicode/multiline content
• Tilde expansion, return message validation

file_list — 9 tests

• Empty directory, mixed files+dirs
• Glob patterns (*.py), recursive glob (**/*.py)
• Error handling: missing directory, not-a-directory
• Hidden files included, relative paths returned
• Default "." directory argument

file_delete — 7 tests

• File deletion, empty directory removal
• Recursive directory deletion (force=True)
• Non-empty directory without force raises error
• Nonexistent path raises FileNotFoundError
• Symlink behavior documentation (resolve follows target)
• Sibling file preservation

file_move — 9 tests

• Basic move, rename in same directory
• Cross-directory move, auto-create parent dirs
• Overwrite existing destination
• FileExistsError when destination exists without overwrite
• FileNotFoundError for missing source
• Directory move, message validation

Integration — 7 tests

• Write→read round trip
• Write→list verification
• Write→move→read pipeline
• Write→delete→verify gone
• List after delete
• Move→read original fails
• Write nested→list with pattern

Technical Notes

• All tests use tmp_path fixtures (pytest-managed temp directories)
• No real filesystem side effects outside of isolated temp dirs
• Tests document actual behavior (e.g., resolve() follows symlinks before delete)
• 51 tests total, all passing

Files Changed

• tests/test_file_operations.py — new test file (51 tests)