Worked on modernizing the test suite for the cedarcode/mi_carrera repository by migrating all model tests from Minitest and Rails test frameworks to RSpec. Focused on models such as Approvable, CreditsPrerequisite, LogicalPrerequisite, SubjectPrerequisite, CookieStudent, UserStudent, and User, ensuring consistent RSpec syntax and preserving existing test behavior. Cleaned up the codebase by removing an empty test folder, which improved the overall structure and maintainability of the suite. Leveraged Ruby, RSpec, and test-driven development practices to enhance test reliability, laying the groundwork for broader RSpec adoption and enabling faster onboarding and future refactoring within the project.