chore: icon: adds unit tests

[dkilgore-eightfold]

SUMMARY:

Adds Icon unit tests.

JIRA TASK (Eightfold Employees Only):

N/A

TEST COVERAGE:

• Tests for this change already exist
• I have added unittests for this change

TEST PLAN:

N/A

[codesandbox-ci]

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[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (main@2e0da40). Click here to learn what that means.
Patch has no changes to coverable lines.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #549   +/-   ##
=======================================
  Coverage        ?   84.68%           
=======================================
  Files           ?      791           
  Lines           ?    16835           
  Branches        ?     5916           
=======================================
  Hits            ?    14257           
  Misses          ?     2512           
  Partials        ?       66           

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[slee-eightfold]

lgtm