update indexed-db tests

[fadi-george]

Description

1 Line Summary

Slightly improve test coverage of the IndexedDB service and create a db operation helper.

Details

• removes unnecessary/deprecated node-sass since we already use sass package
• moves indexedDB tests next to the file it tests
• sets coverage information in the jest config
• update typings for LimitStore
• adds new public objectStoreNames method for IndexedDB class to help with testing
• adds new dbOperation method for IdnexedDB class to keep code more dry for certain operations like put, get, getAll, etc.

Systems Affected

• WebSDK
• Backend
• Dashboard

Validation

Tests

Info

Checklist

• All the automated tests pass or I explained why that is not possible
• I have personally tested this on my machine or explained why that is not possible
• I have included test coverage for these changes or explained why they are not needed

Programming Checklist
Interfaces:

• Don't use default export
• New interfaces are in model files

Functions:

• Don't use default export
• All function signatures have return types
• Helpers should not access any data but rather be given the data to operate on.

Typescript:

• No Typescript warnings
• Avoid silencing null/undefined warnings with the exclamation point

Other:

• Iteration: refrain from using elem of array syntax. Prefer forEach or use map
• Avoid using global OneSignal accessor for context if possible. Instead, we can pass it to function/constructor so that we don't call OneSignal.context

Screenshots

Info

=============================== Coverage summary ===============================
Statements   : 39.4% ( 2947/7479 )
Branches     : 25.4% ( 919/3617 )
Functions    : 33.33% ( 463/1389 )
Lines        : 39.64% ( 2918/7360 )
================================================================================
Test Suites: 24 passed, 24 total
Tests:       135 passed, 135 total
Snapshots:   0 total
Time:        4.891 s

Checklist

• I have included screenshots/recordings of the intended results or explained why they are not needed

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Related Tickets

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