add various tests

[thetayloredman]

No description provided.

[codecov-commenter]

Codecov Report

Attention: 22 lines in your changes are missing coverage. Please review.

Comparison is base (588ddaf) 13.51% compared to head (1f3b7c6) 28.13%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #91       +/-   ##
===========================================
+ Coverage   13.51%   28.13%   +14.62%     
===========================================
  Files          18       18               
  Lines        2450     2442        -8     
===========================================
+ Hits          331      687      +356     
+ Misses       2119     1755      -364     

Files	Coverage Δ
compiler/zrc_codegen/src/expr.rs	60.77% <100.00%> (+60.77%)	⬆️
compiler/zrc_codegen/src/lib.rs	61.29% <100.00%> (+61.29%)	⬆️
compiler/zrc_codegen/src/stmt.rs	52.79% <54.16%> (+52.79%)	⬆️

... and 1 file with indirect coverage changes

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