add tests for stream standard

[anonrig]

Tests certain edge cases which are not covered in standard.c++

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.01%. Comparing base (a5c6178) to head (ed41b5c).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5950      +/-   ##
==========================================
+ Coverage   69.67%   70.01%   +0.34%     
==========================================
  Files         397      406       +9     
  Lines      105999   107106    +1107     
  Branches    17965    17965              
==========================================
+ Hits        73853    74990    +1137     
+ Misses      21351    21319      -32     
- Partials    10795    10797       +2     

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[codspeed-hq]

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing yagiz/add-streams-standard (ed41b5c) with main (66745cd)}

Summary

✅ 70 untouched benchmarks
⏩ 129 skipped benchmarks¹

Footnotes

1. 129 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[anonrig]

Closing this pull-request since it doesn't reach to edge cases where I was planning on testing.