Adding RediSearch/RedisJSON tests

[ashtul]

Pull Request check-list

Please make sure to review and check all of these items:

• Does $ tox pass with this change (including linting)?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

NOTE: these things are not required to open a PR and can be done
afterwards / while the PR is open.

Description of change

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[codecov-commenter]

Codecov Report

Merging #1691 (f98a0a2) into master (f5160f5) will increase coverage by 0.08%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1691      +/-   ##
==========================================
+ Coverage   89.71%   89.79%   +0.08%     
==========================================
  Files          57       57              
  Lines       11186    11252      +66     
==========================================
+ Hits        10035    10104      +69     
+ Misses       1151     1148       -3     

Impacted Files	Coverage Δ
tests/test_search.py	98.58% <100.00%> (+0.57%)	⬆️
tests/test_json.py	100.00% <0.00%> (ø)

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