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test-driven-development

Drives C#/.NET development with a Red-Green-Refactor test-first workflow.

Updated Aug 23, 2026
Search Tags:#testing#tdd#csharp#dotnet#xunit#grpc#ef-core
One-click install
npx skills add https://github.com/donellmccoy/ECTSystem --skill test-driven-development-donellmccoy
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/donellmccoy/ECTSystem/tree/main/.github/skills/test-driven-development
Command: npx skills add https://github.com/donellmccoy/ECTSystem --skill test-driven-development-donellmccoy

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Test-driven development (TDD) helps teams avoid late-stage defects by guiding design through a cycle of writing failing tests first, implementing minimal production code, and refactoring with confidence.

Core Features & Use Cases

  • Red-Green-Refactor workflow: write a failing test, make it pass with minimal changes, then clean up.
  • End-to-end discipline for C#/.NET projects: applies to gRPC services, EF Core data access, and UI components.
  • Improves maintainability and reduces bug leakage by creating a traceable commitment to behavior before implementation.

Quick Start

Start by adding a new xUnit test following the AAA pattern, then run dotnet test to observe a failing scenario, implement the smallest production code to pass, and repeat until all tests pass.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
How do I start test-driven development in a C# .NET project?▼

Test-driven development guides design by writing failing tests first, implementing minimal production code to pass them, and refactoring safely. This Red-Green-Refactor cycle reduces late-stage defects by committing to observable behavior before implementation.

Can I use TDD for gRPC services and EF Core data access?▼

TDD uses the Red-Green-Refactor discipline: write a failing test, make it pass with minimal production code changes, then clean up the implementation. This iterative cycle ensures traceable behavior before full implementation.

What is the best way to reduce bug leakage when shipping new features?▼

The best way to reduce bug leakage is driving development with failing tests first. This TDD approach creates a traceable commitment to expected behavior before writing code, improving maintainability and preventing late-stage defects.

Does TDD work for UI component testing in dotnet projects?▼

TDD fits UI component testing in dotnet projects by specifying desired behavior with a failing test first, then implementing minimal code to pass. This ensures observable UI behavior is committed to before implementation.

Why should I write failing tests before writing production code?▼

Writing failing tests first establishes a traceable commitment to expected behavior before implementation. This ensures production code is minimal, directly satisfies the test, and reduces late-stage defects in your features.

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