editoast: refactor infra tests part 4

[hamz2a]

Part of #6980

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 85.71429% with 6 lines in your changes missing coverage. Please review.

Project coverage is 28.45%. Comparing base (93556a5) to head (3a224aa).
Report is 33 commits behind head on dev.

Files	Patch %	Lines
editoast/src/views/infra/errors.rs	55.55%	4 Missing ⚠️
editoast/src/modelsv2/infra/errors.rs	93.93%	2 Missing ⚠️

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Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #7648      +/-   ##
============================================
+ Coverage     28.43%   28.45%   +0.01%     
- Complexity     2028     2038      +10     
============================================
  Files          1242     1243       +1     
  Lines        153120   153286     +166     
  Branches       3004     3008       +4     
============================================
+ Hits          43543    43618      +75     
- Misses       107789   107877      +88     
- Partials       1788     1791       +3     

Flag	Coverage Δ
core	75.03% <ø> (+0.02%)	⬆️
editoast	71.86% <85.71%> (-0.01%)	⬇️
front	9.83% <ø> (-0.01%)	⬇️
gateway	2.41% <ø> (ø)
railjson_generator	87.49% <ø> (ø)
tests	72.93% <ø> (ø)

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[woshilapin]

Thank you. One comment is only for confirmation, feel free to Resolve if I understood correctly. The other comment might need to track all of the occurrences in the PR.