Fix #216

[cschreib]

Allow empty test case name, with test.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.07%. Comparing base (e865d5d) to head (9e55f7d).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #218      +/-   ##
==========================================
+ Coverage   93.97%   94.07%   +0.10%     
==========================================
  Files          30       30              
  Lines        1775     1772       -3     
==========================================
- Hits         1668     1667       -1     
+ Misses        107      105       -2     

Files with missing lines	Coverage Δ
include/snitch/snitch_registry.hpp	86.36% <ø> (ø)
src/snitch_registry.cpp	95.95% <100.00%> (+0.37%)	⬆️

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