Issue 227/UI test

[naomijub]

first pass on issue #227

[codecov]

Codecov Report

Attention: Patch coverage is 51.35135% with 18 lines in your changes are missing coverage. Please review.

Project coverage is 39.82%. Comparing base (118243a) to head (bacd876).

❗ Current head bacd876 differs from pull request most recent head dadfee3. Consider uploading reports for the commit dadfee3 to get more accurate results

Files	Patch %	Lines
crates/editor_ui/src/meshless_visualizer.rs	0.00%	16 Missing ⚠️
crates/editor_ui/src/sizing.rs	90.47%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             v0.6     #303      +/-   ##
==========================================
+ Coverage   39.42%   39.82%   +0.40%     
==========================================
  Files          70       70              
  Lines       10058    10059       +1     
==========================================
+ Hits         3965     4006      +41     
+ Misses       6093     6053      -40     

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