PatrickRen opened a new pull request #13606:
URL: https://github.com/apache/flink/pull/13606


   ## What is the purpose of the change
   
   This pull request implements an end-to-end unified testing framework for 
connectors based on [Testcontainers](https://www.testcontainers.org/). An 
example test for Kafka connector is also provided in this PR. 
   
   ## Brief change log
   
   - Implement connector testing framework 
   - Implement an end-to-end test for Kafka connector
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   - Make sure you have Docker environment on your machine
   - Run integrated test using "mvn verify". This will start a Flink cluster 
with 1 JM and 1 TM, along with a Kafka broker on Docker, then run an end-to-end 
test for Kafka connector. 
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): no
     - The public API, i.e., is any changed class annotated with 
`@Public(Evolving)`: no
     - The serializers: no
     - The runtime per-record code paths (performance sensitive): no
     - Anything that affects deployment or recovery: JobManager (and its 
components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: no
     - The S3 file system connector: no
   
   ## Documentation
   
     - Does this pull request introduce a new feature? yes
     - If yes, how is the feature documented? JavaDocs
   


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