Feature/ui testing

[ryuash]

Description

Slowly integrating bloc and widget testing

Checklist

• [x] Targeted PR against correct branch.
• [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• [x] Wrote unit tests.
• [x] Run flutter format.
• [ ] Updated the documentation.
• [ ] Added an entry to the CHANGELOG.md file.
• [ ] Re-reviewed Files changed in the Github PR explorer.

[codecov[bot]]

Codecov Report

Merging #115 into master will increase coverage by 16.42%. The diff coverage is 91.66%.

@@             Coverage Diff             @@
##           master     #115       +/-   ##
===========================================
+ Coverage   19.22%   35.65%   +16.42%     
===========================================
  Files         262      262               
  Lines        6595     6600        +5     
===========================================
+ Hits         1268     2353     +1085     
+ Misses       5327     4247     -1080     

Impacted Files	Coverage Δ
...ui/blocs/recover_account/recover_account_bloc.dart	90.00% <ø> (+90.00%)	:arrow_up:
lib/ui/localization/index.dart	60.00% <ø> (ø)
lib/ui/widgets/export_mnemonic_popup/index.dart	77.50% <83.33%> (+77.50%)	:arrow_up:
lib/ui/blocs/home/home_bloc.dart	66.66% <100.00%> (+66.66%)	:arrow_up:
...dgets/post_content/widgets/link_preview/index.dart	87.80% <100.00%> (+87.80%)	:arrow_up:
...l_content/widgets/post_poll_result_item/index.dart	100.00% <100.00%> (+100.00%)	:arrow_up:
lib/ui/blocs/navigator/navigator_bloc.dart	2.02% <0.00%> (+2.02%)	:arrow_up:
lib/ui/blocs/navigator/navigator_event.dart	9.52% <0.00%> (+9.52%)	:arrow_up:
lib/ui/models/link_preview.dart	11.11% <0.00%> (+11.11%)	:arrow_up:
lib/ui/blocs/post_details/post_details_event.dart	15.78% <0.00%> (+15.78%)	:arrow_up:
... and 58 more

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