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dotnet-testing

Testing & Quality
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.NET 测试策略与落地：领域单测、应用层单测、ASP.NET Core 集成测试（WebApplicationFactory/TestServer）、鉴权 mock。

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/testing/dotnet-testing-anything-well-ai-repo-template/SKILL.md

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.NET 测试

此 skill 用于建立“分层可测试性”与“可回归的质量门槛”。

何时使用此 Skill

  • 为领域模型/应用服务补齐单元测试
  • 为 ASP.NET Core API 增加集成测试（真实管道 + HttpClient）
  • 需要在测试里替换数据库、注入 fake 外部依赖、mock 认证

关键最佳实践（含权威依据）

1) 集成测试首选 WebApplicationFactory

  • 使用 WebApplicationFactory<TEntryPoint> 启动 SUT，并用 CreateClient() 发 HTTP 请求。
  • Minimal API 场景如果 Program 是隐式 internal，可在 Program.cs 增加：public partial class Program { } 以便测试项目引用。

参考（Microsoft Learn）：

  • Integration tests in ASP.NET Core（WebApplicationFactory、ContentRoot 推断、mock authentication）
  • Test ASP.NET Core MVC apps（建议测试 host 尽量贴近生产 host）

2) 测试命名与风格一致

  • 参考仓库 DDD 指令：MethodName_Condition_ExpectedResult() 命名模式。
  • 不要写 Arrange/Act/Assert 注释（遵循仓库 C# 指令）。

3) Mock 认证/授权

  • 通过 ConfigureTestServices 注入测试用 AuthenticationHandler，确保 scheme 与应用一致。

常见反模式

  • 只测 Controller，不测领域规则（导致业务规则回归风险高）
  • 集成测试依赖真实外部服务、不可重复
  • 测试用例共享状态导致互相污染

使用示例（提示语模板）

  • “为该 Minimal API 添加集成测试：覆盖 200/400/401，并用 WebApplicationFactory 替换为 InMemory 数据库。”
  • “为该聚合的不变量写单测，命名遵循 MethodName_Condition_ExpectedResult。”