[Multiple Datasource Test] Add test for error_menu, item, data_source_multi_selectable

[yujin-emma]

Description

Add test for data_source_error_menu, data_source_item, data_source_multi_selectable

Issues Resolved

#6748
#6749
#6750

Screenshot

Testing the changes

 PASS  src/plugins/data_source_management/public/components/data_source_multi_selectable/data_source_multi_selectable.test.tsx (5.229 s)
  DataSourceMultiSelectable
    ✓ should render normally with local cluster not hidden (9 ms)
    ✓ should render normally with local cluster hidden (1 ms)
    ✓ should show toasts when exception happens (2 ms)
    ✓ should callback when onChange happens (227 ms)
    ✓ should return correct state when ui Settings provided (2 ms)
    ✓ should return correct state when ui Settings provided and hide cluster is false (1 ms)
    ✓ should handle no available data source error when selected option is empty and hide localcluster (20 ms)
    ✓ should not handle no available data source error when selected option is empty and not hide localcluster (5 ms)

Test Suites: 1 passed, 1 total
Tests:       8 passed, 8 total
Snapshots:   2 passed, 2 total

 PASS  src/plugins/data_source_management/public/components/data_source_item/data_source_item.test.tsx
  Test on ShowDataSourceOption
    ✓ should render the component with label (28 ms)
    ✓ should render the component with label and default badge (11 ms)
    ✓ should render the component with a default data source (15 ms)

 PASS  src/plugins/data_source_management/public/components/data_source_item/data_source_item.test.tsx
  Test on ShowDataSourceOption
    ✓ should render the component with label (31 ms)
    ✓ should render the component with label and default badge (11 ms)
    ✓ should render the component with a default data source (15 ms)

Changelog

• fix: Add test for data_source_error_menu, data_source_item, data_source_multi_selectable

Check List

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.55%. Comparing base (a3d255e) to head (714df6e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6752      +/-   ##
==========================================
+ Coverage   67.54%   67.55%   +0.01%     
==========================================
  Files        3428     3428              
  Lines       67337    67337              
  Branches    10994    10994              
==========================================
+ Hits        45480    45487       +7     
+ Misses      19184    19179       -5     
+ Partials     2673     2671       -2     

Flag	Coverage Δ
Linux_1	33.04% <ø> (ø)
Linux_2	55.13% <ø> (ø)
Linux_3	45.15% <ø> (+<0.01%)	⬆️
Linux_4	34.72% <ø> (ø)
Windows_1	33.06% <ø> (ø)
Windows_2	55.10% <ø> (ø)
Windows_3	45.17% <ø> (+0.02%)	⬆️
Windows_4	34.72% <ø> (ø)

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