Contract Test Assistant | 合約測試助手

Language: English | 繁體中文

Guide contract testing strategy selection, setup, and verification for APIs and microservices.

引導 API 和微服務的合約測試策略選擇、設定和驗證。

What is Contract Testing? | 什麼是合約測試？

Contract testing verifies that services can communicate correctly by testing the agreements (contracts) between consumers and providers — without requiring all services to be running.

合約測試透過測試消費者和提供者之間的協議（合約）來驗證服務間的通訊正確性，不需要所有服務同時運行。

Strategy Selection | 策略選擇

Strategy	Best For	Tool	適用場景
Consumer-Driven	Internal microservices, team owns both sides	Pact	內部微服務，團隊同時擁有兩端
Provider-Driven	Public APIs, OpenAPI-first design	OpenAPI + Prism	公開 API，OpenAPI 優先設計
Bi-Directional	Mixed ownership, gradual adoption	Pact + OpenAPI	混合所有權，漸進採用

Workflow | 工作流程

ASSESS ──► CHOOSE ──► DEFINE ──► IMPLEMENT ──► VERIFY
  評估架構    選擇策略    定義合約     實作測試      驗證合約

1. ASSESS — Evaluate Architecture | 評估架構

How many services communicate?
Who owns consumer vs provider?
有多少服務互相通訊？誰擁有消費者/提供者？

2. CHOOSE — Select Strategy | 選擇策略

Consumer-Driven (Pact) vs Provider-Driven (OpenAPI)
消費者驅動 (Pact) vs 提供者驅動 (OpenAPI)

3. DEFINE — Create Contract | 定義合約

Write consumer expectations or OpenAPI spec
撰寫消費者期望或 OpenAPI 規格

4. IMPLEMENT — Write Tests | 實作測試

Consumer tests generate contracts
Provider tests verify against contracts
消費者測試產生合約；提供者測試驗證合約

5. VERIFY — Run Verification | 驗證

CI pipeline verifies contracts on every PR
CI 管線在每個 PR 上驗證合約

Commands | 指令

Command	Action	說明
`/contract-test`	Interactive strategy selection	互動式策略選擇
`/contract-test consumer`	Guide consumer test setup	引導消費者測試設定
`/contract-test provider`	Guide provider test setup	引導提供者測試設定
`/contract-test verify`	Check contract coverage	檢查合約覆蓋率

Contract Coverage Report | 合約覆蓋率報告

## Contract Coverage Report

| Consumer | Provider | Endpoint | Status |
|----------|----------|----------|--------|
| web-app | user-api | GET /users/:id | ✅ Verified |
| web-app | user-api | POST /users | ✅ Verified |
| mobile-app | auth-api | POST /login | ⚠️ Consumer only |
| admin-ui | report-api | GET /reports | ❌ No contract |

**Coverage**: 50% (2/4 endpoints verified both sides)

Integration | 與其他技能的整合

Skill	Integration	整合方式
`/api-design`	Define API contracts during design	設計時定義 API 合約
`/ci-cd`	Add contract verification to pipeline	管線中加入合約驗證
`/testing`	Contract tests as part of test strategy	合約測試作為測試策略一部分

Next Steps Guidance | 下一步引導

After /contract-test completes:

合約測試引導完成。建議下一步：

執行 /ci-cd 將合約驗證加入 CI 管線

執行 /api-design 完善 API 設計

執行 /testing 整合到整體測試策略

Reference | 參考

Detailed guide: contract-testing.md
Related: api-design-assistant

AI Agent Behavior | AI 代理行為

When /contract-test is invoked:

Assess — Ask about architecture (monolith, microservices, number of APIs)
Recommend — Suggest strategy based on architecture
Guide — Walk through setup for chosen strategy
Generate — Create example contract test files
Verify — If verify subcommand, scan for contracts and report coverage

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