Testes unitarios

[clivissonjose]

This pull request introduces several improvements to the backend test coverage, updates some configuration and repository annotations, and makes minor corrections to test data for consistency. The most significant changes are the addition of comprehensive unit tests for the CompanyController and VacancyService, which help ensure reliability of core business logic. Additionally, the database configuration and repository annotations have been updated for better clarity and alignment with Spring standards.

Test Coverage Improvements:

• Added a full suite of unit tests for CompanyController, covering create, delete, update, and find operations, including exception scenarios. (backend/src/test/java/com/va2es/backend/company/controller/CompanyControllerTest.java)
• Added new unit tests for VacancyService, including scenarios for vacancy creation and deletion, with proper exception handling when entities are not found. (backend/src/test/java/com/va2es/backend/vacancy/service/VacancyServiceTest.java)
• Added a stub test class for VacancyController to prepare for future tests. (backend/src/test/java/com/va2es/backend/vacancy/Controller/VacancyControllerTest.java)

Configuration and Annotation Updates:

• Changed database name and password in application.properties to match the backend environment, improving developer onboarding and reducing configuration errors. (backend/src/main/resources/application.properties)
• Added the @Repository annotation to CompanyRepository for better Spring integration and clarity. (backend/src/main/java/com/va2es/backend/repositories/CompanyRepository.java)

Test Data Corrections:

• Updated phone number fields in various student service tests to use consistent formatting, ensuring realistic and valid test data. (backend/src/test/java/com/va2es/backend/student/service/StudentServiceTest.java) [1] [2] [3] [4] [5] [6]
• Updated email in one test case to avoid duplication and ensure test isolation. (backend/src/test/java/com/va2es/backend/student/service/StudentServiceTest.java)

Minor Cleanups:

• Removed an unused import from CompanyServiceTest for code cleanliness. (backend/src/test/java/com/va2es/backend/company/service/CompanyServiceTest.java)