JUnit Test Cases for Scala Project

I need JUnit test cases written for a Scala project, focusing on core functions and data processing components. The tests should be developed using Mockito. Its an ETL job which uses Spark, Kafka and Postgres as DB. All test cases are required to be done in 2 days. Its a high priority project.

Requirements:
- Proficiency in Scala and JUnit
- Strong experience with unit testing
- Familiarity with Mockito for mocking
- Ability to understand and test complex core functions and data processing logic
-80% project coverage mandatory

Ideal Skills:
- Scala development
- Unit testing expertise
- Mockito experience
- Problem-solving and analytical skills