What is the TDD Red Phase?

The Red Phase is the first step in Test-Driven Development where you write a test for a new feature that is expected to fail because the implementation doesn't exist yet.

Why must the test fail initially?

A failing test proves that the test is actually testing the new behavior and isn't passing by accident or due to existing logic.

How does the AAA pattern improve my tests?

The Arrange-Act-Assert pattern provides a clear structure that separates test setup, execution, and verification, making tests much easier to read and maintain.

What programming languages are supported?

This skill provides specific naming conventions and file patterns for Go, Python, TypeScript, and Rust, but the principles can be applied to any language.

TDD Red Phase Expert

Name: TDD Red Phase Expert
Author: pagerguild

bypagerguild

セキュリティとテスト

Enforces the 'test-first' principle of Test-Driven Development by guiding users to write failing tests before implementation.

概要

The TDD Red Phase Expert is a specialized Claude Code skill designed to streamline the initial stage of Test-Driven Development. It helps developers identify core behaviors, establish descriptive naming conventions, and structure tests using the Arrange-Act-Assert (AAA) pattern. By ensuring tests fail for the right reasons before any business logic is written, this skill prevents trivial passing, improves code coverage, and promotes a more robust architectural design from the start of the development cycle.

主な機能

Standardizes test naming using scenario-based conventions
Automates phase transitions via integrated CLI commands
Identifies and prevents common TDD mistakes like implementation-first coding
Provides language-specific test file patterns for Go, Python, TS, and Rust
Enforces the Arrange-Act-Assert (AAA) test structure
0 GitHub stars

ユースケース

Starting new feature development with a test-first approach
Teaching and enforcing TDD best practices within a development team
Designing complex test suites before writing any implementation code

概要

主な機能

Standardizes test naming using scenario-based conventions
Automates phase transitions via integrated CLI commands
Identifies and prevents common TDD mistakes like implementation-first coding
Provides language-specific test file patterns for Go, Python, TS, and Rust
Enforces the Arrange-Act-Assert (AAA) test structure
0 GitHub stars

ユースケース

Starting new feature development with a test-first approach
Teaching and enforcing TDD best practices within a development team
Designing complex test suites before writing any implementation code