refactor: Simplify assertion

[l0b0]

Related Issue(s): #331

Description:

PR Checklist:

• Code is formatted (run pre-commit run --all-files)
• Tests pass (run scripts/test)
• Documentation has been updated to reflect changes, if applicable
• This PR maintains or improves overall codebase code coverage.
• Changes are added to the CHANGELOG. See the docs for information about adding to the changelog.

[codecov-commenter]

Codecov Report

Merging #515 (9b040f1) into main (a4fe4cd) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #515      +/-   ##
==========================================
- Coverage   93.96%   93.96%   -0.01%     
==========================================
  Files          71       71              
  Lines        9991     9990       -1     
  Branches     1061     1061              
==========================================
- Hits         9388     9387       -1     
  Misses        434      434              
  Partials      169      169              

Impacted Files	Coverage Δ
tests/test_item.py	99.78% <100.00%> (-0.01%)	⬇️

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