Update test_redis_storage.py

[Dreamsorcerer]

What do these changes do?

Are there changes in behavior for the user?

Related issue number

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• Add a new news fragment into the CHANGES folder
  • name it <issue_id>.<type> (e.g. 588.bugfix)
  • if you don't have an issue_id change it to the pr id after creating the PR
  • ensure type is one of the following:
    • .feature: Signifying a new feature.
    • .bugfix: Signifying a bug fix.
    • .doc: Signifying a documentation improvement.
    • .removal: Signifying a deprecation or removal of public API.
    • .misc: A ticket has been closed, but it is not of interest to users.
  • Make sure to use full sentences with correct case and punctuation, for example: Fix issue with non-ascii contents in doctest text files.

[codecov]

Codecov Report

Merging #576 (925bd86) into master (953ef7a) will not change coverage.
The diff coverage is n/a.

❗ Current head 925bd86 differs from pull request most recent head 2410cb1. Consider uploading reports for the commit 2410cb1 to get more accurate results

@@           Coverage Diff           @@
##           master     #576   +/-   ##
=======================================
  Coverage   97.10%   97.10%           
=======================================
  Files           6        6           
  Lines         346      346           
  Branches       43       43           
=======================================
  Hits          336      336           
  Misses          5        5           
  Partials        5        5           

Flag	Coverage Δ
unit	97.10% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 953ef7a...2410cb1. Read the comment docs.