AgentSkillsCN

tdd

TDD（测试驱动开发）工作流程。当编写测试、以 TDD 方式实现功能，或当用户发出“开始”的指令以推进 plan.md 中的计划时，可使用此流程。

SKILL.md
--- frontmatter
name: tdd
description: TDD (Test-Driven Development) workflow. Use when writing tests, implementing features with TDD, or when user says "go" to proceed with plan.md
allowed-tools: Read, Write, Edit, Bash, Grep, Glob

TDD Workflow

Follow Kent Beck's TDD cycle: Red → Green → Refactor

Cycle

  1. •Red: Write the simplest failing test first
  2. •Green: Implement minimum code to make tests pass
  3. •Refactor: Improve structure only after tests pass

Test Writing

  • •Use meaningful names describing behavior (e.g., shouldSumTwoPositiveNumbers)
  • •Make failures clear and informative
  • •Write one test at a time

Implementation

  • •Write just enough code to pass - no more
  • •Use the simplest solution that could possibly work
  • •Run all tests after each change

Defect Fixing

  1. •Write an API-level failing test first
  2. •Write the smallest test replicating the problem
  3. •Get both tests to pass

Refactoring Phase

  • •Only refactor when tests are passing (Green phase)
  • •Use established patterns with proper names
  • •Make one change at a time
  • •Run tests after each step
  • •Prioritize removing duplication and improving clarity

Example Workflow

  1. •Write a simple failing test for a small part of the feature
  2. •Implement bare minimum to pass
  3. •Run tests to confirm (Green)
  4. •Use tidy-first skill for structural changes
  5. •Use commit skill for committing
  6. •Add another test for next increment
  7. •Repeat until complete