Improve test coverage for fluent-operator #1417
Description
Is your feature request related to a problem? Please describe.
Testing for fluent-operator is more or less limited to unit testing for plugin types and basic e2e tests for Fluentd. We could definitely improve a lot here to avoid bugs in future releases.
These could definitely use some unit tests as an example, but there is more:
https://github.com/fluent/fluent-operator/blob/master/pkg/operator/daemonset.go
https://github.com/fluent/fluent-operator/blob/master/pkg/operator/fluentd-daemonset.go
I will start working on some, but please share your thoughts and ideas as well.
Describe the solution you'd like
Improve testing coverage for the fluent-operator project
Additional context
No response