Add tests for multiple assignments and unpacking

[lola831]

Description

Adds tests for multiple assignments and unpacking.

Issue Link

N/A

Checklist

• I have tested the changes locally via pytest and/or other means
• I have added or updated relevant documentation
• I have autoformatted the code with black and isort
• I have added test cases (if applicable)

Additional Notes

N/A

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.87%. Comparing base (40d8d1d) to head (b4052bf).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #402      +/-   ##
==========================================
+ Coverage   89.85%   89.87%   +0.01%     
==========================================
  Files          54       54              
  Lines       13549    13556       +7     
==========================================
+ Hits        12174    12183       +9     
+ Misses       1375     1373       -2     

see 6 files with indirect coverage changes

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[dfremont]

The essence of the tests looks good, but let's simplify them by not using dynamic simulations (just top-level code rather than behaviors). You can use sampleParamPFrom to get simple values out if needed.

[lola831]

@dfremont I’ve simplified the tests to use top-level code rather than behaviors.