[Feature] Remove the dubbo-test module, optimize Dubbo unit tests, and move some unit tests to integration tests.

[Stellar1999]

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Apache Dubbo Component

Java SDK (apache/dubbo)

Descriptions

The dubbo-test module starts a mock Zookeeper for use in subsequent unit tests. However, in theory, this approach is more suitable for integration testing. In fact, many of the current unit tests in the Dubbo project not only test individual code blocks but also directly test full workflows.

This issue has two goals:

1. Remove the dependency on dubbo-test in unit tests to make them more focused on code-level logic, thereby improving the CI and development experience.
2. Move some of the full-workflow unit tests to the dubbo-integration-test project.

This development started at the beginning of the year. This issue is being created to help track progress and facilitate further discussion.

Related issues

Are you willing to submit a pull request to fix on your own?

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