[Do not merge] optional workspace parameters unit test add

[SuZhou-Joe]

Description

Issues Resolved

Screenshot

Testing the changes

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
  • yarn test:ftr
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

[codecov-commenter]

Codecov Report

Merging #200 (e8c0298) into workspace-pr-integr (d7d712e) will decrease coverage by 0.06%.
Report is 4 commits behind head on workspace-pr-integr.
The diff coverage is 51.48%.

@@                   Coverage Diff                   @@
##           workspace-pr-integr     #200      +/-   ##
=======================================================
- Coverage                66.49%   66.44%   -0.06%     
=======================================================
  Files                     3408     3408              
  Lines                    65149    65238      +89     
  Branches                 10431    10466      +35     
=======================================================
+ Hits                     43323    43349      +26     
- Misses                   19237    19281      +44     
- Partials                  2589     2608      +19     

Flag	Coverage Δ
Linux_1	?
Linux_2	?
Linux_3	?
Linux_4	?
Windows_1	?
Windows_2	?
Windows_3	?
Windows_4	?
_1	34.81% <ø> (?)
_2	55.40% <51.48%> (?)
_3	44.47% <0.99%> (?)
_4	34.80% <0.99%> (?)

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

Files	Coverage Δ
.../core/public/saved_objects/saved_objects_client.ts	92.55% <ø> (ø)
...ore/server/saved_objects/import/check_conflicts.ts	100.00% <ø> (ø)
...rver/saved_objects/import/resolve_import_errors.ts	96.42% <ø> (ø)
...d_objects/migrations/core/build_active_mappings.ts	87.09% <ø> (ø)
...e/server/saved_objects/serialization/serializer.ts	100.00% <100.00%> (ø)
...saved_objects/service/lib/search_dsl/search_dsl.ts	100.00% <ø> (ø)
src/core/server/saved_objects/service/lib/utils.ts	100.00% <100.00%> (ø)
...erver/saved_objects/import/create_saved_objects.ts	96.77% <0.00%> (-3.23%)	⬇️
...erver/saved_objects/import/import_saved_objects.ts	97.50% <50.00%> (-2.50%)	⬇️
src/core/server/saved_objects/routes/export.ts	15.00% <0.00%> (ø)
... and 9 more

... and 11 files with indirect coverage changes

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