Increase code coverage of Core module to 80%

Type of change

• Bug Fix
• Feature
• Code Enhancement

Please provide link to gitlab issue or ADR(Architecture Decision Record)
osdu/platform/data-flow/ingestion/home#51

Does this introduce a change in the core logic?

• [YES/NO] No

Does this introduce a change in the cloud provider implementation, if so which cloud?

• AWS
• Azure
• GCP
• IBM

Doesn't change any functionalities. Only increases code coverage.

Does this introduce a breaking change?

• [YES/NO] NO

What is the current behavior?

Code coverage was not tracked for core modules. Coverage was a low 13%.

What is the new/expected behavior?

Increased coverage to 80%.

Have you added/updated Unit Tests and Integration Tests?

a few existing tests were modified. New classes are covered. Only unit tests impacted.

Any other useful information