单元测试IoC注册? [英] Unittesting IoC registration?

问题描述

您是否应该对将组件注册到IoC容器中的代码进行单元测试?

Should you unittest the code that registers components into your IoC container?

如果是，怎么办?

推荐答案

Guice IoC容器，首先是我在没有Guice的情况下使用TDD为某些功能生成了类(这些是单元测试).然后，我使用Guice为该功能创建了集成测试.此时，IoC配置(Guice模块)不完整，因此集成测试将失败.使用TDD，我逐步添加了IoC配置，直到通过集成测试为止.除非通过测试，否则我不会添加任何@Inject批注，配置行或范围声明.结果，我将进行集成(或验收)测试，以确保IoC配置正确且完整.

What I do with the Guice IoC container, is that first I produce the classes for some feature using TDD without Guice (these are unit tests). Then I create an integration test for that feature with Guice. At that point the IoC configuration (Guice module) is incomplete, so the integration test will fail. Using TDD, I add the IoC configuration step by step until the integration test passes. I won't add any @Inject annotation, line of configuration or scope declaration, unless it is required to pass a test. As a result, I will have integration (or acceptance) tests making sure that the IoC configuration is right and complete.

此方法适用于任何IoC容器或其他系统，这些容器的配置非常复杂，以至于可能会损坏-除非需要通过测试，否则请勿编写任何配置.

This same method should work with any IoC container or other system, whose configuration is so complex that it may break - don't write any configuration unless it is require to pass a test.

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