> For the complete documentation index, see [llms.txt](https://doczhcn.gitbook.io/junit5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doczhcn.gitbook.io/junit5/index/index-4.md).

# 扩展模型

- [概述](https://doczhcn.gitbook.io/junit5/index/index-4/overview.md)
- [注册扩展](https://doczhcn.gitbook.io/junit5/index/index-4/registration.md)
- [有条件的测试执行](https://doczhcn.gitbook.io/junit5/index/index-4/conditions.md)
- [测试实例后处理](https://doczhcn.gitbook.io/junit5/index/index-4/test-instance-post-processing.md)
- [测试生命周期回调](https://doczhcn.gitbook.io/junit5/index/index-4/lifecycle-callbacks.md)
- [异常处理](https://doczhcn.gitbook.io/junit5/index/index-4/exception-handling.md)
- [为测试模板提供调用上下文](https://doczhcn.gitbook.io/junit5/index/index-4/test-templates.md)
- [在扩展中维持状态](https://doczhcn.gitbook.io/junit5/index/index-4/keeping-state.md)
- [在扩展中支持的实用程序](https://doczhcn.gitbook.io/junit5/index/index-4/supported-utilities.md)
- [用户代码和扩展的相对执行顺序](https://doczhcn.gitbook.io/junit5/index/index-4/execution-order.md)