Create react test for audio icon

[jkup]

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).

Fix #6307

Auditors @bbondy @bsclifton

These are my first React unittests. Can you all tell me how they are looking / what I'm missing?

[bsclifton]

Looks (and works) great! 😄 Awesome job

cc: @cezaraugusto since this is a much easier to digest example than the DownloadItem (as far as faking clicks goes)

[bsclifton]

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