Added parameterized test for spawner.py

[Nils-ChristianIseke]

Regarding #964. Replacement of pull request #1152.

This time I used parameterised tests. As always, welcome feedback. If this approach is approved, I will test all arguments of the spawner, this way.

[bmagyar]

Thank you! Let's see the CIs opinion :)

[codecov[bot]]

Codecov Report

Merging #1160 (85a2ba6) into master (b8ba5c0) will not change coverage. The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1160   +/-   ##
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  Coverage   47.63%   47.63%           
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  Files          40       40           
  Lines        3445     3445           
  Branches     1866     1866           
=======================================
  Hits         1641     1641           
  Misses        480      480           
  Partials     1324     1324           

Flag	Coverage Δ
unittests	47.63% <ø> (ø)

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[Nils-ChristianIseke]

@bmagyar could you have a look:) CI was failing but should hopefully be fixed now.

[bmagyar]

Pretty happy with how this looks. Time to add a few more instantiations to that parametrized test now! :D