[Improvement] [DolphinScheduler-Worker] No Tests in DolphinScheduler Worker

[springmonster]

Search before asking

• I had searched in the issues and found no similar issues.

What happened

There is no unit test in DolphinScheduler Worker module

What you expected to happen

Improve unit test coverage

How to reproduce

Run unit test with coverage

Anything else

No response

Version

2.0.1

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[github-actions]

Hi:

• Thank you for your feedback, we have received your issue, Please wait patiently for a reply.
• In order for us to understand your request as soon as possible, please provide detailed information、version or pictures.
• If you haven't received a reply for a long time, you can subscribe to the developer's email，Mail subscription steps reference https://dolphinscheduler.apache.org/en-us/community/development/subscribe.html ,Then write the issue URL in the email content and send question to dev@dolphinscheduler.apache.org.