Update tests and documentation for clarity and completeness

[andrey-helldar]

What:

• Bug Fix
• New Feature

Description:

This pull request includes updates to improve code clarity, testing coverage, and documentation consistency:

• Enhanced test descriptions for better clarity and purpose.
• Added unit tests for transformers to increase test coverage.
• Removed redundant secondary-label references in the directives topic.
• Updated summaries in several documentation topics for improved clarity and coherence.
• Added and updated documentation for directives, location, and eloquent topics.

Related:

N/A