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v0.3.3: Comprehensive test improvements

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@queelius queelius released this 18 Nov 10:11

This release focuses on significantly improving test coverage and quality through TDD best practices.

Test Coverage Improvements

  • search_parser.py: 44% → 98% coverage (+54 points)
  • vfs/resolver.py: 55% → 99% coverage (+44 points)
  • repl/shell.py: 56% → 64% coverage (+8 points)

New Test Suites

  • test_search_parser.py (83 tests, 1,026 lines)

    • Field-specific searches (title:Python, author:Knuth)
    • Boolean operators (AND, OR, NOT)
    • Comparison operators (rating:>=4, rating:3-5)
    • SQL generation and SQL injection protection
    • Edge cases and error handling
  • test_vfs_resolver.py (47 tests, 695 lines)

    • Path resolution (absolute, relative, special paths)
    • Parent directory navigation
    • Symlink resolution and tab completion
    • Edge cases and error handling
  • test_repl.py (35 additional tests)

    • Pipeline execution and chaining
    • Output redirection
    • Text processing commands
    • Error handling and validation

Test Quality Improvements

Refactored 12 brittle tests to focus on behavior, not implementation:

  • Removed __repr__ format tests → replaced with inspection tests
  • Refactored hash tests to focus on deduplication behavior
  • Refactored unique ID tests to focus on uniqueness guarantees
  • Refactored sort name tests to focus on ordering behavior
  • Replaced magic number assertions with calculated expectations
  • Replaced exact title assertions with ordering logic

Test Design Principles

All new and refactored tests follow TDD best practices:

  • Given-When-Then structure for clarity
  • Test behavior, not implementation - resilient to refactoring
  • Independent and isolated - can run in any order
  • Clear failure messages - easy debugging
  • Living documentation - tests explain what the system does

Results

  • Total tests: 662 passing (no regressions)
  • Coverage: 75%+ maintained on refactored modules
  • Test quality: All tests survive refactoring
  • New tests added: 165 comprehensive tests
  • Tests refactored: 12 tests improved for resilience

Benefits

  • Can now change hash algorithms without breaking tests
  • Can modify ID formats without test failures
  • Can improve sort algorithms freely
  • Tests serve as executable specifications
  • Fearless refactoring enabled

Installation

pip install ebk==0.3.3

Documentation

https://queelius.github.io/ebk/