[Feature]: JUnit Jupiter extension for reuse of containers

Module

Core

Problem

Assume you have several integration tests splitted in some classes. All this tests can reuse the same container instance. If the container needs some time to setup that would be a great benefit.

Solution

By using the JUnit extension API it would be easy to create a custom annotation like this:

@ContainerConfig(name="containerA", needNewInstance=false) public void testFoo() {}

A container that is needed could be simply defined by a provider:

@ContainerProvider(name="containerA") public GenericContainer<?> createContainerA() {}

By using test lifecycle callbacks (https://junit.org/junit5/docs/current/user-guide/#extensions-lifecycle-callbacks) this could be achieved as a JUnit extension.

I would be happy to help by creating the feature :)

Benefit

Containers that are needed for multiple tests in multiple classes only need to be defined once and the instances can be reused.

Alternatives

Would you like to help contributing this feature?

Yes

从 Core 模块开始，阅读 issue 中引用的 JUnit Jupiter 扩展 API 生命周期回调。定义所提议的 ContainerConfig 和 ContainerProvider 注解应如何在测试类之间注册和复用容器，然后验证共享实例只创建一次，而 needNewInstance 请求保持隔离。