Unit test vitest pages frontend(PatientProfilePage.tsx , StaffAttendancePage.tsx , QueueManagementPage.tsx, AssignDoctorPage.tsx)

Implemented frontend unit testing using Vitest for application pages. Covered page-level components to ensure correct rendering and layout behavior. Tested user interactions such as button clicks, form submissions, and navigation flows. Validated routing logic and page transitions. Mocked API calls to handle loading, success, and error states. Mocked custom hooks and context providers to isolate UI logic. Verified conditional rendering based on props and state changes. Ensured error boundaries and fallback UI behave correctly. Covered edge cases to reduce regressions. Improved overall frontend reliability and maintainability.