Is this skill suitable for TDD?

Absolutely. It includes specific implementation patterns for writing failing tests first and verifying fixes through the entire multi-layer pipeline.

How does this skill handle validation failures?

It provides specific recovery procedures for each layer, ensuring that if a linting error or unit test fails, the process stops immediately for a fix before proceeding to heavier tests.

Can I use custom testing frameworks with this skill?

Yes, the skill allows you to configure specific commands (e.g., npm, pytest, go test) for each of the four validation layers to match your project's stack.

What are the four layers of validation in this skill?

The strategy utilizes Layer 1: Type/Syntax, Layer 2: Unit Tests, Layer 3: Integration Tests, and Layer 4: End-to-End scenarios to catch bugs at every level of the stack.

Defense-in-Depth Validation

Name: Defense-in-Depth Validation
Author: a-ariff

bya-ariff

0•

Security & Testing

Implements a multi-layered validation strategy to catch bugs through sequential syntax, unit, integration, and end-to-end testing cycles.

The Defense-in-Depth skill provides a rigorous framework for code validation within Claude Code, emphasizing a systematic 'four-layer' approach to quality assurance. By enforcing a pipeline that moves from static analysis and unit tests to integration and end-to-end scenarios, it ensures that no single point of failure allows a bug to reach production. This skill is particularly useful for complex refactoring, feature implementation, and regression testing, offering structured implementation patterns and recovery procedures that guide Claude in maintaining high-integrity codebases.

Key Features

010 GitHub stars

02Layer-specific recovery procedures and failure diagnostics

03Structured implementation patterns for bug fixes and new features

04Integration with pre-action verifiers and boundary checkers

05Four-layer validation pipeline (Syntax, Unit, Integration, E2E)

06Customizable command configuration for project-specific tooling

Use Cases

01Enforcing Test-Driven Development (TDD) patterns for systematic bug resolution

02Standardizing automated testing workflows across distributed development teams

03Ensuring zero-regression deployments during major architectural refactoring

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add a-ariff/ariff-code-config defense-in-depth

For use in Claude.ai and ChatGPT

Download Skill