Surgical Refactoring of Non-Tested Code – A Worked Example
summary
Method extracts impure chunks from a small C++ trivia codebase, converts the deterministic parts into pure functions, moves them into a separate file (CLion and compiler errors guide dependency injection), and adds data-driven tests (and notes how to use property-based tests or Spock in JVM languages). Refactoring collapses duplicated creators into a single generator, then groups helpers into classes; the process produces a tested result with 167 assertions checked and incremental commits to keep behavior unchanged.
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chapters (6)
- 0:00Start
- 0:06Alexandre Bobwaka
- 9:17Refactoring Move Function
- 12:27Data-Driven Tests Approach
- 26:37Test Separation
- 31:43How Do You Move Pure Functions into a Class
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