Python Refactoring and Code Quality

  1. Testing and Refactoring Integration
    1. Testing as Refactoring Safety Net
      1. Characterization Tests for Legacy Code
        1. Capturing Existing Behavior
          1. Test Generation Strategies
            1. Approval Testing Techniques
            2. Unit Test Coverage
              1. Isolating Units for Testing
                1. Mock and Stub Usage
                  1. Test Boundary Definition
                  2. Integration Test Strategy
                    1. Testing Component Interactions
                      1. End-to-End Behavior Verification
                      2. Regression Test Maintenance
                        1. Keeping Tests Current with Refactoring
                          1. Test Refactoring Techniques
                        2. Test-Driven Development and Refactoring
                          1. Red-Green-Refactor Cycle
                            1. Writing Failing Tests First
                              1. Minimal Implementation Strategies
                                1. Refactoring for Quality
                                2. TDD Design Benefits
                                  1. Emergent Design Principles
                                    1. Decoupling and Modularity
                                      1. Interface-First Development
                                      2. Refactoring Test Code
                                        1. Applying DRY to Test Suites
                                          1. Test Fixture Management
                                            1. Test Readability Improvements
                                              1. Test Performance Optimization
                                            2. Testing Tools and Frameworks
                                              1. pytest Framework
                                                1. Fixture Usage for Refactoring
                                                  1. Parametrized Testing
                                                    1. Plugin Ecosystem
                                                    2. unittest Module
                                                      1. Test Case Organization
                                                        1. Mock Library Usage
                                                        2. Property-Based Testing
                                                          1. Hypothesis Framework
                                                            1. Generating Test Cases
                                                              1. Finding Edge Cases

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                                                          6. Module and Package Refactoring

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                                                          8. Advanced Refactoring Strategies