HDDS-13868. Add unit test coverage for OMNodeDetails

[0lai0]

What changes were proposed in this pull request?

This PR adds unit tests for the OMNodeDetails class.
Added test file: TestOMNodeDetails.java with 16 test methods covering major functionality.

Please describe your PR in detail:

Test Coverage

1. Builder pattern:

• testBuilderWithInetSocketAddress() — building from InetSocketAddress
• testBuilderWithHostAddressString() — building from host address string
• testSetRatisAddress() — setting Ratis address in builder

2. State management:

• testRatisListenerFlag() — Ratis listener flag (get, set, builder)
• testDecommissionedState() — decommissioned state transitions

3. Accessor methods:

• testGetRpcPort() — RPC port retrieval
• testToString() — string representation
• testGetOMPrintInfo() — formatted print info

4. Protobuf serialization:

• testProtobufConversionActiveNode() — active node conversion
• testProtobufConversionDecommissionedNode() — decommissioned node conversion
• testProtobufConversionListenerNode() — listener node conversion

5. Configuration loading:

• testGetOMNodeAddressFromConf() — reading OM node address from config
• testGetOMNodeDetailsFromConfValid() — loading node details from valid config
• testGetOMNodeDetailsFromConfMissing() — handling missing configuration

6. URL generation:

• testGetOMDBCheckpointEndpointUrlHttp() — HTTP checkpoint endpoint URL
• testGetOMDBCheckpointEndpointUrlHttps() — HTTPS checkpoint endpoint URL

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-13868

How was this patch tested?

mvn test -Dtest=TestOMNodeDetails -pl hadoop-ozone/common

[jojochuang]

Looks good. Just one comment and we're good to go.

[jojochuang]

Can you add two negative tests here

Suggested change

	}
	nodeDetails = OMNodeDetails.getOMNodeDetailsFromConf(conf, serviceId, null);
	assertNull(nodeDetails);
	nodeDetails = OMNodeDetails.getOMNodeDetailsFromConf(conf, null, nodeId);
	assertNull(nodeDetails);
	}

[0lai0]

@jojochuang Thank you for your suggestion. I think we could put this two negative test to testGetOMNodeDetailsFormConfMissing(). Is this a good way?

[jojochuang]

Sure

[jojochuang]

+1 merging it

[0lai0]

Thank you @jojochuang .