notes(TODO) Add file

Author: tony

notes/TODO.md

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+# VCSPull TODO List
+
+This document outlines the tasks needed to improve the test coverage, type safety, and overall quality of the VCSPull codebase based on the test audit plan.
+
+## 1. Type Safety Improvements
+
+- [ ] **Enhance Exception Hierarchy**
+  - [ ] Expand `exc.py` with specific exception types for different error scenarios
+  - [ ] Add rich exception metadata (path, url, suggestions, risk level)
+  - [ ] Add proper typing to all exception classes
+
+- [ ] **Improve Type Definitions**
+  - [ ] Revise `types.py` to use more specific types (avoid Any)
+  - [ ] Create type aliases for complex types to improve readability
+  - [ ] Add Protocols for structural typing where appropriate
+  - [ ] Ensure all TypedDict definitions are complete and accurate
+
+- [ ] **Type Annotation Completeness**
+  - [ ] Audit all functions for missing type annotations
+  - [ ] Add return type annotations to all functions
+  - [ ] Use Optional and Union types appropriately
+  - [ ] Properly annotate all class methods
+
+- [ ] **Configure Strict Type Checking**
+  - [ ] Set up `mypy.ini` with strict mode enabled
+  - [ ] Enable all recommended type checking flags
+  - [ ] Add CI checks for type validation
+
+## 2. Test Coverage Improvements
+
+- [ ] **Config Module**
+  - [ ] Add tests for edge cases in config parsing
+  - [ ] Test invalid configuration handling
+  - [ ] Test environment variable expansion
+  - [ ] Test relative path resolution
+
+- [ ] **CLI Module**
+  - [ ] Add tests for each CLI command
+  - [ ] Test error handling and output formatting
+  - [ ] Test interactive mode behaviors
+  - [ ] Mock external dependencies for reliable testing
+
+- [ ] **Sync Operations**
+  - [ ] Create tests for sync operations with different VCS types
+  - [ ] Mock VCS operations for predictable testing
+  - [ ] Test error handling during sync operations
+  - [ ] Test recovery mechanisms
+
+- [ ] **Validator Module**
+  - [ ] Add tests for each validation function
+  - [ ] Test validation of malformed configurations
+  - [ ] Ensure all validators throw appropriate exceptions
+
+## 3. Test Infrastructure
+
+- [ ] **Improve Test Fixtures**
+  - [ ] Create reusable fixtures for common test scenarios
+  - [ ] Implement typed fixtures using Protocols
+  - [ ] Add fixtures for different repository types (git, svn, etc.)
+
+- [ ] **Add Property-Based Testing**
+  - [ ] Implement Hypothesis test strategies for configuration generation
+  - [ ] Test config parsing with random valid and invalid inputs
+  - [ ] Add property-based tests for path handling
+
+- [ ] **Improve Test Organization**
+  - [ ] Organize tests by module/feature
+  - [ ] Add integration tests for end-to-end workflows
+  - [ ] Separate unit tests from integration tests
+
+## 4. Documentation
+
+- [ ] **Docstring Improvements**
+  - [ ] Ensure all public functions have complete docstrings
+  - [ ] Add examples to docstrings where appropriate
+  - [ ] Document possible exceptions and error conditions
+  - [ ] Add type information to docstrings (NumPy format)
+
+- [ ] **Add Type Documentation**
+  - [ ] Document complex type behavior
+  - [ ] Add clear explanations for TypedDict usage
+  - [ ] Document Protocol implementations
+
+## 5. Refactoring for Testability
+
+- [ ] **Dependency Injection**
+  - [ ] Refactor code to allow for dependency injection
+  - [ ] Make external dependencies mockable
+  - [ ] Create interfaces for key components
+
+- [ ] **Pure Functions**
+  - [ ] Extract pure functions from complex methods
+  - [ ] Move side effects to dedicated functions
+  - [ ] Improve function isolation
+
+## 6. CI Integration
+
+- [ ] **Test Automation**
+  - [ ] Configure CI to run all tests
+  - [ ] Add coverage reporting
+  - [ ] Set up test matrix for different Python versions
+  - [ ] Implement test results visualization
+
+- [ ] **Type Checking in CI**
+  - [ ] Add mypy checks to CI pipeline
+  - [ ] Add annotations coverage reporting
+
+## Prioritized Tasks
+
+1. **Immediate Priorities**
+   - Enhance exception hierarchy
+   - Complete type annotations
+   - Configure strict type checking
+   - Add tests for core configuration functionality
+
+2. **Medium-term Goals**
+   - Improve test fixtures
+   - Add tests for CLI operations
+   - Improve docstrings
+   - Refactor for better testability
+
+3. **Long-term Objectives**
+   - Implement property-based testing
+   - Achieve 90%+ test coverage
+   - Complete documentation overhaul
+   - Integrate comprehensive CI checks
+
+## Metrics and Success Criteria
+
+- [ ] **Type Safety**
+  - [ ] Pass mypy in strict mode with zero warnings
+  - [ ] 100% of functions have type annotations
+  - [ ] No usage of `Any` without explicit justification
+
+- [ ] **Test Coverage**
+  - [ ] Overall test coverage > 90%
+  - [ ] Core modules coverage > 95%
+  - [ ] All public APIs have tests
+
+- [ ] **Documentation**
+  - [ ] All public APIs documented
+  - [ ] All complex types documented
+  - [ ] Examples for all major features