[Bug] Non-idempotent unit test org.apache.rocketmq.filter.FilterSpiTest#testRegister

[kaiyaok2]

Before Creating the Bug Report

• I found a bug, not just asking a question, which should be created in GitHub Discussions.

• I have searched the GitHub Issues and GitHub Discussions of this repository and believe that this is not a duplicate.

• I have confirmed that this bug belongs to the current repository, not other repositories of RocketMQ.

Runtime platform environment

Ubuntu 22.04

RocketMQ version

Latest commit - af43a3e

JDK Version

JDK 17.0.10

Describe the Bug

The test org.apache.rocketmq.filter.FilterSpiTest#testRegister is non-idempotent (passes in the first run but fails in the second run in the same JVM).

Steps to Reproduce

Use the NIOInspector plugin that supports rerunning unit tests in the same JVM:

cd filter
mvn edu.illinois:NIODetector:rerun -Dtest=org.apache.rocketmq.filter.FilterSpiTest#testRegister

It can be seen that the test passes in the first run but fails in the second run in the same JVM.

What Did You Expect to See?

The test shall pass in repeated execution in the same environment.

What Did You See Instead?

The following error is raised in the second execution:

java.lang.IllegalArgumentException: Filter spi type(Nothing) already exist!
	at org.apache.rocketmq.filter.FilterFactory.register(FilterFactory.java:44)
	at org.apache.rocketmq.filter.FilterSpiTest.testRegister(FilterSpiTest.java:53)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)

Additional Context

No response