Un-hardcode a test filename in an integration test (fixes #61)

[oSoMoN]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.09%. Comparing base (3a8eddf) to head (3dc3fdf).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #62      +/-   ##
==========================================
+ Coverage   80.03%   80.09%   +0.05%     
==========================================
  Files          10       10              
  Lines        2730     2733       +3     
  Branches      680      681       +1     
==========================================
+ Hits         2185     2189       +4     
  Misses        524      524              
+ Partials       21       20       -1     

Flag	Coverage Δ
macos_latest	80.95% <100.00%> (+0.02%)	⬆️
ubuntu_latest	75.68% <66.66%> (+0.74%)	⬆️
windows_latest	15.01% <0.00%> (-0.02%)	⬇️

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