Assessments Bloc, Client, Repository, Phase 1 Unit Testing

Closes #49 (closed)

• Flutter Assessment BloC test
  • Test Cases
  • yield AssessmentsInitial on successful fetching of data
  • yields AssessmentsError on unsuccessful fetching of data
  • yields AssessmentsAdded on successful adding of phase 1
  • yields AssessmentsError when ward name is empty while adding of phase 1 assessments
  • yields AssessmentsError when assessments are not completed while adding of phase 1 assessments

• AssessmentsRepository testing
  • Test Cases
  • Throws exception if wardname is empty
  • Throws exception if assessments are incomplete
  • Marks phase-1 as complete if everything is correctly filled
  • Adds stage-1 assessments if list is empty

• Assessment Client Test
  • Test Cases
  • returns response with 200 code on successful fetching of assessments
  • throws fetch data exception on no internet connection