User route tests

[sirkrypt0]

Closes #9

[codecov-commenter]

Codecov Report

Merging #57 (a7eb425) into main (9bf9afb) will decrease coverage by 1.99%.
The diff coverage is 24.13%.

@@            Coverage Diff             @@
##             main      #57      +/-   ##
==========================================
- Coverage   61.35%   59.36%   -2.00%     
==========================================
  Files           9       10       +1     
  Lines         546      566      +20     
==========================================
+ Hits          335      336       +1     
- Misses        211      230      +19     

Impacted Files	Coverage Δ
server/src/main.rs	0.00% <0.00%> (ø)
server/src/test_db.rs	0.00% <0.00%> (ø)
server/src/test_helpers.rs	77.27% <0.00%> (-22.73%)	⬇️
server/src/user/routes.rs	0.00% <0.00%> (ø)
server/src/user/auth.rs	95.12% <100.00%> (+0.12%)	⬆️
server/src/user/model.rs	92.96% <100.00%> (ø)

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