[SalesRule] Covering the CouponCodeValidation class by Unit Tests

[eduard13]

Description (*)

This PR covers the \Magento\SalesRule\Observer\CouponCodeValidation observer class by Unit Tests, that is used for validating the newly provided coupon code before using it while calculating totals.

Fixed Issues (if relevant)

N/A

Manual testing scenarios (*)

N/A

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds are green)

[m2-assistant]

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[dmytro-ch]

Good job, @eduard13!
Could you please fix minor recommendations reported by Static Test?
Thank you!

[eduard13]

Hi @dmytro-ch, the Static Tests were fixed.
Thank you.

[magento-engcom-team]

Hi @dmytro-ch, thank you for the review.
ENGCOM-5812 has been created to process this Pull Request
✳️ @dmytro-ch, could you please add one of the following labels to the Pull Request?

Label	Description
Auto-Tests: Covered	All changes in Pull Request is covered by auto-tests
Auto-Tests: Not Covered	Changes in Pull Request requires coverage by auto-tests
Auto-Tests: Not Required	Changes in Pull Request does not require coverage by auto-tests

[engcom-Delta]

Notice: QA not applicable

[m2-assistant]

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