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test-guided-migration-assistant

Guide code migration using existing test suites as behavioral oracles.

1|2|Updated Mar 10, 2026
Search Tags:#code quality#testing#developer tools#refactoring#migration#regression testing
One-click install
npx skills add https://github.com/santosomar/general-secure-coding-agent-skills --skill test-guided-migration-assistant-santosomar
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-guided-migration-assistant
Source: https://github.com/santosomar/general-secure-coding-agent-skills/tree/main/skills/code-analysis/test-guided-migration-assistant
Command: npx skills add https://github.com/santosomar/general-secure-coding-agent-skills --skill test-guided-migration-assistant-santosomar

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps you migrate or refactor codebases by using your existing test suite as a safety net, ensuring that critical behaviors are preserved at every step and quickly identifying regressions.

Core Features & Use Cases

  • Incremental Migration: Migrate code in small, manageable steps.
  • Behavioral Oracle: Leverages passing tests as proof of behavior preservation.
  • Regression Localization: Pinpoints exactly which migration step introduced a failure.
  • Use Case: When porting a large Python 2 application to Python 3, use this Skill to guide the migration, running relevant tests after each small code change to ensure the application's functionality remains intact.

Quick Start

Use the test-guided-migration-assistant skill to migrate the code, ensuring all tests pass after each step.

Frequently Asked Questions about test-guided-migration-assistant

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I use existing tests to guide code migration safely?▼

Use existing tests as behavioral oracles to guide code migration safely. This approach facilitates incremental changes, leveraging passing tests as proof that critical behaviors are preserved after each small modification.

What is the best way to refactor a large codebase without introducing regressions?▼

Refactor a large codebase without regressions by migrating in small, manageable steps. Run your test suite after each incremental change to ensure the application's functionality remains intact and critical behaviors are preserved.

How can I localize the root cause of a regression introduced during refactoring?▼

Localize the root cause of a regression during refactoring through regression localization. Track test failures against incremental migration steps to pinpoint exactly which code change introduced the bug.

Does test-guided migration work for porting large applications to new language versions?▼

Test-guided migration works for porting large applications to new language versions. For example, when porting a large Python 2 application to Python 3, it guides the migration by running relevant tests after each code change.

When should I not use incremental test-driven migration for code evolution?▼

Avoid incremental test-driven migration for code evolution if your software project lacks an existing test suite. This process requires passing tests to act as behavioral oracles to verify that functionality remains intact.

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