Add tests for float-like integers

[DavisVaughan]

Closes #33

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.96%. Comparing base (6b035d8) to head (8d48817).
Report is 2 commits behind head on next.

Additional details and impacted files

@@            Coverage Diff             @@
##             next     #113      +/-   ##
==========================================
- Coverage   82.02%   81.96%   -0.06%     
==========================================
  Files           6        6              
  Lines         968      965       -3     
==========================================
- Hits          794      791       -3     
  Misses        174      174              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.