test(datastore): Subscription selectionset for primarykeys only

[royjit]

Issue #

Description

Adds test for the logic in this PR - #3016

General Checklist

• Added new tests to cover change, if needed
• Build succeeds with all target using Swift Package Manager
• All unit tests pass
• All integration tests pass
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)
• Documentation update for the change if required
• PR title conforms to conventional commit style
• New or updated tests include Given When Then inline code documentation and are named accordingly testThing_condition_expectation()
• If breaking change, documentation/changelog update with migration instructions

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Merging #3063 (0e7dcf4) into v1 (2ad710f) will decrease coverage by 0.08%.
The diff coverage is n/a.

❗ Your organization is not using the GitHub App Integration. As a result you may experience degraded service beginning May 15th. Please install the Github App Integration for your organization. Read more.

@@            Coverage Diff             @@
##               v1    #3063      +/-   ##
==========================================
- Coverage   63.85%   63.77%   -0.08%     
==========================================
  Files         722      722              
  Lines       23193    23193              
==========================================
- Hits        14809    14791      -18     
- Misses       8384     8402      +18     

Flag	Coverage Δ
API_plugin_unit_test	62.98% <ø> (ø)
AWSPluginsCore	73.62% <ø> (+0.41%)	⬆️
Amplify	51.17% <ø> (ø)
Analytics_plugin_unit_test	72.58% <ø> (ø)
Auth_plugin_unit_test	83.80% <ø> (ø)
DataStore_plugin_unit_test	80.77% <ø> (-0.39%)	⬇️
Geo_plugin_unit_test	57.87% <ø> (ø)
Predictions_plugin_unit_test	33.58% <ø> (ø)
Storage_plugin_unit_test	59.53% <ø> (ø)

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

see 8 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more