test: Improve coverage for VolunteerCampFlow

Overview

This MR adds comprehensive unit test cases for the VolunteerCampFlow module to improve code quality and reliability by achieving 100% test coverage.

Currently, the module lacks sufficient test coverage, leaving several logic branches, UI states, and edge cases untested. This MR ensures all functionalities are properly validated through automated tests.

---

What does this MR do and why?

This MR focuses on writing unit tests for the VolunteerCampFlow component to ensure all functionalities work as expected and to eliminate uncovered code.

Motivation

• Existing code had low or incomplete test coverage
• Critical paths like form handling, validation, API calls, and error handling were not fully tested
• Improves confidence in code changes and reduces regression risks

Approach

• Used Jest + React Testing Library

• Covered:

  • Component rendering
  • User interactions (input, submit)
  • Validation logic
  • API success and failure scenarios (mocked)
  • Loading states

• Ensured 100% coverage (lines, branches, functions)

Trade-offs

• Slight increase in test file size
• Additional time spent covering edge cases, but improves long-term maintainability

---

Changes Made

• Added unit test file:

  • __tests__/VolunteerCampFlow.test.tsx

• Covered all logic in:

  • VolunteerCampFlow component
  • Related handlers and states

• Mocked API calls using jest.mock()

• Added test cases for:

  • Valid and invalid form submissions
  • API success and error responses
  • Loading and disabled states

---

Technical Details

• Root issue: Uncovered branches and missing test cases

• Fix:

  • Identified all uncovered lines using coverage report

  • Wrote tests to cover:

    • Conditional logic (if/else)
    • Error handling paths
    • UI state transitions

• Used:

  • render() for component rendering
  • fireEvent / userEvent for interactions
  • waitFor() for async testing

• API calls mocked to ensure deterministic tests

---

Type of Change

• 🐛 Bug fix
• ✨ New feature
• 💥 Breaking change
• 📝 Documentation update
• 🎨 UI/UX improvement
• ♻️ Refactor
• ⚡ Performance improvement
• 🧪 Test update
• 🔧 Configuration change
• 🚨 Security fix

---

Related Issues / References

related to #271 (closed)

• Related to VolunteerCampFlow test coverage improvement

---

Screenshots or Screen Recordings

before

after

---

How to Set Up and Validate Locally

1. Checkout this branch:

   git checkout <branch-name>

2. Install dependencies:

   bun install

3. Run tests with coverage:

   bun run test:coverage

4. Verify:

   • VolunteerCampFlow shows 100% coverage
   • All tests pass successfully

---

Testing Done

• Manual testing completed
• Unit tests added/updated

Test Cases Covered:

Scenario	Expected Result	Status
Component renders	UI loads without errors	✅
Input handling	Inputs update correctly	✅
Valid form submission	API called with correct payload	✅
Empty field validation	Validation messages displayed	✅
API success response	Success handled correctly	✅
API failure response	Error handled correctly	✅
Loading state	Loader shown, button disabled	✅

---

Code Quality Checklist

Code Standards

• Code follows project conventions
• No console.log() or debug statements
• No unused imports or variables
• No duplicate code
• i18n rules followed
• Proper TypeScript types used
• ESLint/Prettier checks pass

React Best Practices

• Proper component structure
• Hooks used correctly
• State handled appropriately
• No unnecessary re-renders

Component Patterns

• UI components used correctly
• Accessibility considered
• Clean and maintainable structure

API & Data Fetching

• API calls mocked correctly
• Loading and error states tested

Error Handling

• Errors handled and tested properly
• User-friendly messages verified

---

Documentation

• README updated (not required)
• .env.example updated (not required)
• CHANGELOG updated (if applicable)

---

Known Limitations / Technical Debt

• Tests rely on mocked API responses (no real backend integration)
• Future integration tests can be added for full flow validation

---

Additional Notes

• Focus was on achieving 100% coverage without redundant tests
• Ensured all branches and edge cases are covered
• Improves overall test reliability and maintainability

---

MR Acceptance Checklist

---