editoast: refactor infra tests part 5

[hamz2a]

Part of #6980

create_mini_infra is a temporary infra, and will be replaced by small_infra once Infra::persist is refactored.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 40.62500% with 19 lines in your changes missing coverage. Please review.

Project coverage is 28.54%. Comparing base (c1a55f4) to head (87c26dc).
Report is 10 commits behind head on dev.

Files	Patch %	Lines
editoast/src/views/infra/routes.rs	37.50%	10 Missing ⚠️
editoast/src/views/infra/pathfinding.rs	0.00%	7 Missing ⚠️
editoast/src/views/infra/objects.rs	77.77%	2 Missing ⚠️

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Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #7705      +/-   ##
============================================
- Coverage     28.54%   28.54%   -0.01%     
  Complexity     2059     2059              
============================================
  Files          1249     1249              
  Lines        154147   154181      +34     
  Branches       3040     3039       -1     
============================================
  Hits          44005    44005              
- Misses       108328   108363      +35     
+ Partials       1814     1813       -1     

Flag	Coverage Δ
core	74.95% <ø> (-0.06%)	⬇️
editoast	71.65% <40.62%> (-0.11%)	⬇️
front	10.01% <ø> (+0.01%)	⬆️
gateway	2.34% <ø> (ø)
railjson_generator	87.49% <ø> (ø)
tests	72.93% <ø> (-0.24%)	⬇️

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[leovalais]

Thanks for this PR. Can we please delay merging it until the OpenApi migration is complete? Sadly there's some overlap that I won't be able to fix since I'll be in vacation, and I'd like these to be merged asap :/

Cf. #7553 #7677 #7686

[woshilapin]

🚀

[leovalais]

Thanks for letting all OpenApi PRs being merged before this one, it really helped! 😄

Just a few minor details and we're good to go 🚀

[leovalais]

Thanks for re-arranging the PR to avoid merging short-lived code.
A few more changes and we're good :)