[FLINK-XXXXX][state-backends] Migrate RocksDB state backend tests to …

[Alwaysgaurav1]

What is the purpose of the change

This pull request migrates legacy JUnit 4 and Hamcrest test assertions in flink-statebackend-rocksdb to JUnit 5 (Jupiter) and AssertJ in accordance with Apache Flink test standards.

Brief change log

• Migrated RocksDBMemoryControllerUtilsTest to JUnit 5 (@TempDir, @BeforeAll) and AssertJ assertions.
• Migrated RocksDBResourceContainerTest to JUnit 5 and AssertJ assertions.
• Migrated RocksDBWriteBatchWrapperTest to JUnit 5 and assertThatThrownBy(...) / AssertJ assertions.
• Migrated RocksDBNativeMetricOptionsTest to JUnit 5 and AssertJ assertions.

Verifying this change

This change is a code refactoring of test suites without any changes to existing production runtime logic.

• Run maven tests:
  mvn test -pl flink-state-backends/flink-statebackend-rocksdb -am -Dfast -Dtest=RocksDBMemoryControllerUtilsTest,RocksDBResourceContainerTest,RocksDBWriteBatchWrapperTest,RocksDBNativeMetricOptionsTest -Dsurefire.failIfNoSpecifiedTests=false
• All 30 tests pass cleanly with 0 failures and 0 errors.

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, ZooKeeper: no
• The S3 file system connector: no

Documentation

• Does this pull request introduce a new feature? no
• If yes, how is the feature documented? not applicable

[spuru9]

Hi @Alwaysgaurav1
Looks like a duplicate to #28943 and https://issues.apache.org/jira/browse/FLINK-29775

[flinkbot]

CI report:

• d9052e3 Azure: FAILURE

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