Refactor: Improve Test Suite

[AlanAlvarez21]

Refactor: Improve Test Suite Efficiency and Clarity
This pull request refactors several tests to improve efficiency, readability, and maintainability, key changes include:

• Add missing notion tests.

• Add missing utils tests.

• Google SendEmail Test
  Memory Efficiency: Replaced @params instance variables with let declarations for improved memory management.
  Isolation: Stubbed API dependencies (GmailService, UserRefreshCredentials) to prevent actual API calls during testing.
  Clarity: Added structured context blocks to clearly separate success and failure scenarios, enhancing readability and understanding of test cases.

• Notion Request Test Isolation
  Mocked HTTP requests using HTTParty to avoid external network dependencies during testing.
  Readability: Extracted headers logic into let(:expected_headers) for cleaner and more readable assertions.
  Structure: Improved structure within .execute and .notion_headers tests for better organization and clarity.

• Notion UpdateDbState Test
  Performance: Refactored @DaTa instance variables to let(:data) for lazy loading, resulting in better test performance.
  Readability: Extracted expected request parameters to improve the clarity of assertions within .build_params.

• OpenAI RunAssistant Test
  Isolation: Mocked HTTP requests to prevent actual interactions with the OpenAI API.
  Comprehensive Testing: Implemented different mocked responses for success, failure, and in-progress API calls to ensure robust handling of various scenarios.
  Error Handling: Verified that .execute handles API failures gracefully.

• Discord Integration Test
  Memory Efficiency: Replaced @params instance variables with let(:params).
  Isolation: Ensured that the HTTP request mock effectively prevents external calls.
  Maintainability: Separated logic for request body and headers to improve maintainability and readability.

[coveralls]

Pull Request Test Coverage Report for Build 13082793630

Details

• 333 of 333 (100.0%) changed or added relevant lines in 16 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 13021438176:	0.0%
Covered Lines:	960
Relevant Lines:	960

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💛 - Coveralls

[FelipeGuzmanSierra]

Everything looks good, I left a few comments, please, let me know if you want to discuss them! 🚀

[AlanAlvarez21]

Everything looks good, I left a few comments, please, let me know if you want to discuss them! 🚀

Ready, comments fixed, thanks @FelipeGuzmanSierra