Ui/mobile ui

Overview

This Merge Request dramatically enhances the frontend unit test coverage for the volunteer-facing components: PatientHistoryPage and RecordVitalsPage. By implementing comprehensive coverage for complex edge cases, keyboard input preventions, robust API error handlers, and loading states, we successfully satisfied the rigorous branch coverage requirements for these critical workflow panels.

What does this MR do and why?

To ensure frontend reliability and meet the pipeline's strict global branch coverage threshold, we targeted low-coverage components highlighted in recent reports:

1. RecordVitalsPage (Vitals Recording Form):
   • Covered keydown input prevention (preventNonNumericKeys) verifying that alphabetical and invalid symbols are blocked while control keys (e.g. Backspace, Delete) remain functional.
   • Tested diverse API mutation error structures (updateVitals.onError), including string rejections, standard Error instances, missing nested Axios metadata, and circular structure JSON-parsing failures (forcing the try-catch block).
   • Validated submit-time checks where invalid numeric/temperature strings (e.g. NaN or decimals) bypass initial cleanings, verifying the toast notification is correctly dispatched.
2. PatientHistoryPage (Patient Detail / Case Record View):
   • Added edge cases covering empty history records where vitals contain null fields, asserting that -- fallback structures are rendered correctly.
   • Verified that consultations with missing camp locations gracefully default to "Unknown location".
   • Simulated pending mutation states during vitals updates inside the dialog box to assert the loading spinner is displayed properly.

All tests compile with strict TypeScript rules and pass all linter and CI checks with zero errors.

Changes Made

Tests Modified

• 🧪 PatientHistoryPage.test.tsx - Appended new describe block targeting missing edge cases, null histories, null camp location consultation, and pending loaders.
• 🧪 RecordVitalsPage.test.tsx - Added describe block validating keyboard blocking events, 4 distinct API error scenarios, and submit-time NaN validation.

Technical Details

• KeyboardEvent Simulation: Leveraged vi.spyOn(KeyboardEvent.prototype, 'preventDefault') combined with RTL fireEvent.keyDown to reliably check character interception under React 19's event delegation layer.
• Strict Typing Workarounds: Formulated precise mock configurations and structured error castings to fully avoid using the any type, aligning with @typescript-eslint/no-explicit-any ESLint rules.

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to change)
• 📝 Documentation update
• 🎨 UI/UX improvement
• ♻️ Refactor (no functional changes)
• ⚡ Performance improvement
• 🧪 Test update
• 🔧 Configuration change
• 🚨 Security fix

Related Issues / References

closes #352 (closed)

Screenshots or Screen Recordings

Tests run results and coverage passing metrics are documented in the table below.

How to Set Up and Validate Locally

1. Pull the UI/mobile_ui branch.

2. Run the linter:

   bun run lint

3. Execute the unit test suites:

   bun x vitest run tests/volunteers/PatientHistoryPage.test.tsx
   bun x vitest run tests/volunteers/RecordVitalsPage.test.tsx

4. Verify global branch coverage exceeds target requirements:

   bun x vitest run --coverage

Testing Done

• Manual testing completed (Verified that linter, type-check, and build steps succeed)
• Unit tests added/updated

Test Cases Covered:

Scenario	Expected Result	Status
Vitals Input keyboard handler intercepts alpha characters	event.preventDefault() called for 'a', but bypassed for control keys	✅
Vitals Mutation fails with standard Error	Toast displays correct generic error message	✅
Vitals Mutation fails with complex non-detailed error object	Error JSON representation extracted and handled gracefully	✅
Vitals Mutation rejects with a primitive string	Toast displays primitive string content safely	✅
Vitals Mutation throws during circular error stringification	Caught in try-catch block, fallbacks safely to error.message	✅
Empty Patient History data rendering	Null vital numbers map to -- fallbacks correctly	✅
Consultation without camp location record	Component renders Unknown location badge gracefully	✅
Dialog Vitals Update loading state	Loader spinner animate-spin is visible during pending updates	✅

Code Quality Checklist

Code Standards

• Code follows project conventions (naming, structure, formatting)

• No console.log() or debugger statements left in code

• No unused imports, variables, or functions

• No duplicate code and use of existing components for reusability

• i18n check passed with no hardcoded strings in codebase for i18n support

• TypeScript types are properly defined (no any unless justified)

• ESLint and Prettier checks pass

  bun run lint

React Best Practices

• Components are properly split and single-responsibility
• Hooks follow rules (no conditional hooks, proper dependencies)
• State management is appropriate (local vs global state)
• No unnecessary re-renders (memoization used where needed)
• Event handlers are properly cleaned up

API & Data Fetching

• TanStack Query used for server state (if applicable)
• Loading and error states handled
• API types defined in src/types/api.ts
• Axios interceptors handle auth tokens correctly

Error Handling

• Errors are caught and handled gracefully
• User-friendly error messages displayed
• Errors are being toasted properly
• Network failures handled appropriately

Known Limitations / Technical Debt

![Screenshot_From_2026-05-23_14-30-28](/uploads/d7

dc2bb25ca152de01aecc4549495545/Screenshot_From_2026-05-23_14-30-28.png)

None identified. Coverage thresholds were successfully exceeded with optimal codebase sanity.