unit testing for provider classes

[zdanise]

All tests passed.

• flutter test test/event_provider_test.dart
• flutter test test/edit_user_test.dart

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 55.33%. Comparing base (bef48cf) to head (6d46230). Report is 1 commits behind head on develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #128 +/- ## ========================================== Coverage 55.33% 55.33% Complexity 81 81 ========================================== Files 22 22 Lines 403 403 Branches 44 44 ========================================== Hits 223 223 Misses 156 156 Partials 24 24 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.