chore: Add (partial) test coverage for build-basic-block.adoc

[scouten]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 9.38%. Comparing base (6986636) to head (7de90c4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff            @@
##            main    #177      +/-   ##
========================================
+ Coverage   9.33%   9.38%   +0.05%     
========================================
  Files        324     324              
  Lines      19857   19830      -27     
========================================
+ Hits        1854    1862       +8     
+ Misses     18003   17968      -35     

Components	Coverage Δ
Parser test coverage	100.00% <ø> (ø)
AsciiDoc spec coverage	1.48% <ø> (+0.04%)	⬆️

[codspeed-hq]

CodSpeed Performance Report

Merging #177 will not alter performance

_{Comparing sdd+build-basic-block (7de90c4) with main (6986636)}

Summary

✅ 4 untouched benchmarks