[wip] Add testing for wasm build

[mcbarton]

Description

Please include a summary of changes, motivation and context for this PR.

Currently we have no automated tests for our wasm build. The aim of this PR is to fix that.

Fixes # (issue)

Type of change

Please tick all options which are relevant.

• Bug fix
• New feature
• Requires documentation updates

Testing

Please describe the test(s) that you added and ran to verify your changes.

Checklist

• I have read the contribution guide recently

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.17%. Comparing base (0a4c834) to head (3029e3a).
Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #448   +/-   ##
=======================================
  Coverage   71.17%   71.17%           
=======================================
  Files           9        9           
  Lines        3552     3552           
=======================================
  Hits         2528     2528           
  Misses       1024     1024