chore: adding eventbus/base/kafka tests

[zhaque44]

Adding tests for eventbus/base/kafka.go:

func TestBrokers

The Brokers method basically splits the comma-separated broker URLs and return them as a slice of strings.

In the test:

A sample eventbusv1alpha1.KafkaBus configuration is created with two broker URLs: "broker1:9092" and "broker2:9092".
Then the Brokers method of the created kafka instance is called to get the actual list of broker addresses. This test will ensure that the Brokers method correctly parses the comma-separated broker URLs and returns them as a list of strings.

func TestConfig

This test is verifying the behavior of the Config func in the context of the Kafka struct. The Config func is responsible for generating a sarama.Config instance with specific configuration settings based on the KafkaBus configuration. It's validating that the logic for translating the higher-level configuration to the lower-level Kafka client library's configuration is working.

func TestConfig_NoSASL

This test is checking the behavior when SASL configuration is not provided, by setting SASL to nil.

func TestNewKafka

This test validates the NewKafka func, which initializes a kafka object with a given configuration and logger. It ensures that the kafka object and its logger are properly initialized.

• My organization is added to USERS.md.

[zhaque44]

@whynowy Hi, can you please review this PR & take a look

[zhaque44]

@whynowy can I have a review please, this PR is ready to go. I merged master into the branch as well