Increase Test Coverage to 100% for AuthContext.tsx

Issue Summary

Increase test coverage of AuthContext.tsx to 100% by adding comprehensive unit tests for all authentication flows, edge cases, and error handling.

Problem Statement Current test coverage for AuthContext.tsx is very low: Statements: ~40% Branches: ~17% Functions: ~43% Missing coverage includes: Authentication logic (login/logout) Error handling (try/catch) Conditional branches State initialization Side effects (localStorage, useEffect) Impact: Reduced reliability Higher risk of regressions Difficult debugging Reproduce using: npm run test -- --coverage Proposed Solution Write unit tests using Jest and React Testing Library Mock API calls and dependencies Cover all branches (success, failure, edge cases) Ensure every line is executed

Files:

Modify: src/context/AuthContext.tsx Create: src/context/tests/AuthContext.test.tsx Test-Driven Development Acceptance Criteria (Given-When-Then)

Scenario 1: Initial State Given the AuthProvider is rendered When no user is logged in Then the user state should be null

Scenario 2: Successful Login Given valid login credentials When login function is called Then user state should be updated And no errors should occur

Scenario 3: Failed Login Given invalid credentials When login function is called Then an error should be thrown And user remains null

Scenario 4: Logout Given a logged-in user When logout is called Then user becomes null

Scenario 5: Local Storage Given user exists in localStorage When provider initializes Then user is restored

Test Cases

TC-001: Initial state → user is null TC-002: Login success → user updated TC-003: Login failure → error thrown TC-004: Logout → user cleared TC-005: LocalStorage → user restored TC-006: Edge case → null API response handled

Unit Test Requirements

Functions to test:

Assertions:

Renders with initial state Calls API correctly Handles success response Handles error response Updates state correctly Implementation Details

Files:

src/context/AuthContext.tsx → modify src/context/tests/AuthContext.test.tsx → create

Technical:

Use Jest mocks Test async functions Avoid real API calls Testing Strategy

Manual:

Run app Login/logout Verify state

Automated:

Unit tests for logic Mock API responses Error handling tests

Test Data: mockUser = { id: 1, name: "Test User", email: "[email protected] " }