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test-retrofit

Official

Add a legacy safety net with confidence.

Software Engineering#testing#legacy code#risk-based testing#CI#characterization tests#behavior contracts#refactoring safety
AuthorPyl-Tech
Version1.0.0
Installs0

System Documentation

What problem does it solve?

This Skill helps you add tests to existing codebases that already exist without coverage, reducing the risk of refactoring by turning undocumented behavior into verifiable expectations.

Core Features & Use Cases

  • Scope high-risk gaps first: Prioritizes the most dangerous untested modules (including ones flagged by sentrux) so you get maximum safety per test-writing session.
  • Discover intended behavior before asserting: Uses specs/design docs, callers, comments, commit history, and existing integration/E2E tests to establish what the code is supposed to do.
  • Characterize intended behavior truthfully: Writes characterization tests that pass for intended behavior and explicitly labels known bugs or assumptions when behavior is inconsistent or unclear.
  • Guardrails that stick: Ensures the retrofitted tests can run cleanly and documents coverage status, known bugs, and next actions for CI integration.

Quick Start

Use the test-retrofit skill when you’re told “this module has no tests” and you need a safety net before touching it.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: test-retrofit
Download link: https://github.com/Pyl-Tech/stream-coding/archive/main.zip#test-retrofit

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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