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Form-Engine-Testing-Strategy.md

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Form Engine – Testing Strategy Document

Testing Overview

Testing is conducted to ensure that the Form Engine platform functions correctly, reliably, and securely before deployment. The Form Engine allows users to create, manage, publish, and respond to dynamic forms using drag-and-drop fields. Since the system includes both frontend and backend components along with a database layer, testing verifies that each component works individually and together.

Testing helps:

  • Detect bugs early
  • Validate functional requirements
  • Ensure correct form creation and response handling
  • Maintain data integrity
  • Improve overall software quality
  • Reduce production risks
  • Ensure accessibility compliance
  • Validate data security and privacy

Overall, testing increases confidence in system stability, performance, and usability.

Technologies and Languages Used

Backend

  • TypeScript – Core backend development with strict typing
  • Bun – Runtime and test execution environment
  • Elysia.js – Backend framework for REST APIs
  • Prisma ORM – Database interaction and schema management
  • PostgreSQL – Primary database with transaction support

Frontend

  • React – UI development with hooks and state management
  • TypeScript – Frontend type safety and interfaces
  • TanStack Router – Client-side routing
  • React Query – API state management and caching

Testing Tools and Frameworks

Backend Testing Stack

  • Bun Test Runner – Built-in test execution with Jest-like API
  • Mocking (bun:test mock.module) – Database and dependency mocking
  • Prisma Test Client – Database testing with isolated transactions
  • Supertest – HTTP endpoint testing (when needed)

Frontend Testing Stack

  • Vitest – Component and utility testing with React Testing Library
  • React Testing Library – Component behavior testing from user perspective
  • MSW (Mock Service Worker) – API mocking for integration tests
  • @testing-library/user-event – User interaction simulation
  • jsdom – Browser environment simulation for tests

Development and Debugging Tools

  • Prisma Studio – Database inspection and verification
  • Browser DevTools – Network requests and UI debugging
  • Bruno – API endpoint testing and validation

Comprehensive Testing Tools & Frameworks Summary

Backend Testing Tools

Tool/Framework Purpose Usage
Bun Test Runner Unit and integration testing Primary test execution for backend TypeScript code
bun:test mock.module Mocking dependencies Mock database, external services, and modules
Prisma Test Client Database testing Isolated transactions, schema validation
Supertest HTTP endpoint testing API integration tests when needed
c8 Code coverage Coverage reporting for Bun tests

Frontend Testing Tools

Tool/Framework Purpose Usage
Vitest Test runner Fast unit and integration testing for React
React Testing Library Component testing User-centric component behavior testing
@testing-library/user-event User interaction Simulate clicks, typing, form submission
@testing-library/jest-dom Assertions Custom matchers for DOM testing
jsdom Browser simulation DOM environment for Node-based tests
MSW (Mock Service Worker) API mocking Intercept and mock HTTP requests
Vitest UI Test visualization Interactive test result exploration
@vitest/coverage-v8 Code coverage Frontend coverage reporting

Code Quality & Static Analysis

Tool Purpose Usage
Biome Linting & formatting Fast TypeScript/JavaScript linting
TypeScript Compiler (tsc) Type checking Static type validation
ESLint (if used) Code linting Additional linting rules
Prettier (if used) Code formatting Consistent code style

CI/CD & Automation Tools

Tool Purpose Usage
GitHub Actions CI/CD pipeline Automated testing on commits/PRs
Husky Git hooks Pre-commit/pre-push test execution
lint-staged Staged file processing Run tests only on changed files
Codecov Coverage reporting Coverage visualization and tracking
Docker Containerization Isolated test environment setup
Docker Compose Multi-container setup Database + app testing environment

Monitoring & Debugging Tools

Tool Purpose Usage
Chrome DevTools Frontend debugging Network, performance, console debugging
Bruno API client API collection management and testing
React Query DevTools State debugging API cache and query state inspection

Testing Levels and Scope

1. Unit Testing

Backend Unit Tests

Coverage Target: 85%+ code coverage, 95%+ controller coverage

Forms Controller (src/api/forms/controller.ts)

  • Functions Tested:

    • getAllForms – Form listing with pagination
    • createForm – Form creation with validation
    • getFormById – Individual form retrieval
    • updateFormById – Form modification
    • deleteForm – Form deletion with cascade
    • publishForm – Form publishing workflow
    • unPublishForm – Form unpublishing
    • getPublicFormById – Public form access

  • Test Scenarios:

    • Success cases with valid data
    • Empty data handling
    • Not found error scenarios (404)
    • Unauthorized access (403)
    • Database transaction failures
    • Input validation and sanitization
    • SQL injection prevention
    • Ownership validation

Form Fields Controller (src/api/form-fields/controller.ts)

  • Functions Tested:

    • getAllFields – Field retrieval with ordering
    • createField – Field creation with linked-list positioning
    • updateField – Field modification and options handling
    • deleteField – Field deletion with linked-list maintenance
    • swapFields – Field position swapping

  • Test Scenarios:

    • Linked-list ordering logic
    • Field options storage (radio, dropdown, checkbox)
    • Field type validation
    • Ownership and authorization
    • Invalid field references
    • Swap safety checks and same-form validation
    • Transaction reliability and rollback
    • CGPA field special handling

Form Response Controller (src/api/form-response/controller.ts)

  • Functions Tested:

    • draftResponse – Auto-save draft functionality
    • getDraftResponse – Draft retrieval
    • submitResponse – Final response submission
    • getFormResponsesForFormOwner – Response analytics
    • getSubmittedResponse – Individual response access

  • Test Scenarios:

    • Published vs unpublished form access
    • Draft persistence and retrieval
    • Response validation and sanitization
    • Answer mapping and data integrity
    • Ownership restrictions
    • Concurrent draft handling
    • Response encryption (if implemented)

Validation Engine (src/lib/validation-engine.ts)

  • Functions Tested:

    • Field validation for all types (text, number, email, phone, CGPA)
    • Form validation with multiple fields
    • Validation configuration building
    • Pattern matching and custom rules
    • Error message generation

  • Test Scenarios:

    • All 17 field types validation
    • Edge cases and boundary values
    • Custom validation rules
    • Email/phone format validation
    • CGPA range validation (0.00-10.00)
    • Required field validation
    • Cross-field dependencies (if implemented)

Test Properties Matrix

This matrix defines what properties each component type will be tested for:

Component Type Properties Tested Test Methods
Backend Controllers Correctness, Error Handling, Authorization, Data Integrity, Transaction Safety Unit tests, Integration tests, Mock database
API Endpoints Response Format, Status Codes, Performance, Security, Input Validation HTTP tests, Load tests, Security scans
Database Models Integrity Constraints, Relationships, Migrations, Transaction Atomicity Prisma tests, Migration tests, Rollback tests
UI Components Rendering Accuracy, Accessibility, User Interaction, Responsive Design, Error States Component tests, Visual regression, a11y audits
Validation Engine Accuracy, Edge Cases, Error Messages, Pattern Matching, Custom Rules Unit tests, Boundary tests, Regex validation
Forms Field Ordering, Required Fields, Options Storage, Validation Rules Integration tests, E2E tests
Authentication Session Management, Token Security, OAuth Flow, Password Hashing Security tests, Integration tests
API Clients Error Handling, Retry Logic, Response Parsing, Request Formation Unit tests, Mock API responses
State Management Data Consistency, Cache Invalidation, Optimistic Updates Integration tests, State inspection
Routing Navigation, Protected Routes, Parameter Handling, Redirects E2E tests, Router tests

Frontend Unit Tests

Coverage Target: 80%+ component coverage, 90%+ utility coverage

Component Testing (src/components/)

  • Field Components (components/fields/):

    • FieldItems – Field type selection
    • FieldPreview – Editor field rendering (all 17 types)
    • FieldProperties – Field configuration dialog
    • FormFieldRenderer – Form filler field rendering

  • UI Components (components/ui/):

    • Input, Button, Checkbox, Switch, Slider
    • Field, Label, Toast, Dialog
    • Custom form controls and primitives

  • Layout Components:

    • Header – Navigation and auth
    • AppSidebar – Form navigation
    • EditorCanvas – Drag-and-drop interface

Test Properties for Components:

  • Rendering: Correct display in various states
  • User Interaction: Click, change, submit events
  • Accessibility: ARIA attributes, keyboard navigation
  • Responsiveness: Mobile and desktop layouts
  • Error Handling: Validation states, network errors
  • Performance: Render optimization, memoization

Utility Testing (src/lib/)

  • validation-engine.test.ts – Validation logic
  • utils.test.ts – Helper functions
  • auth-client.test.ts – Authentication utilities

2. Integration Testing

Backend Integration Tests

  • Database Integration:

    • Prisma model relationships
    • Transaction consistency
    • Migration testing
    • Data integrity constraints

  • API Integration:

    • Controller-Service-Database flow
    • Error propagation
    • Request/response transformation
    • Authentication middleware

Frontend Integration Tests

  • Component Integration:

    • Parent-child component communication
    • State management across components
    • API integration with React Query
    • Router integration

  • API Integration:

    • Mock API responses with MSW
    • Error state handling
    • Loading states
    • Retry logic

3. System Testing (End-to-End)

Workflow Validation:

  1. Form Creation Workflow:

    • User registration → Login → Create form → Add fields → Configure properties → Save → Publish

  2. Form Response Workflow:

    • Access public form → Fill all field types → Validate input → Save draft → Submit response

  3. Form Management Workflow:

    • View forms → Edit fields → Update options → Re-publish → View responses

  4. Edge Case Workflows:

    • Concurrent form editing
    • Large forms with many fields
    • Network interruption during form filling
    • Browser refresh with unsaved changes

Data Flow Testing:

  • Frontend ↔ Backend API communication
  • Backend ↔ Database operations
  • Real-time updates (if implemented)
  • Form field options persistence

4. Compatibility Testing

Browser Testing Matrix:

Browser Versions Priority
Chrome Latest, Latest-1 High
Firefox Latest, Latest-1 High
Safari Latest, Latest-1 High
Edge Latest Medium
Mobile Safari (iOS) Latest, Latest-1 High
Chrome Mobile (Android) Latest High

Device Testing:

  • Desktop: 1920x1080, 1366x768, 2560x1440
  • Tablet: iPad (1024x768), iPad Pro (1366x1024)
  • Mobile: iPhone (375x667), Android (360x640), Large phones (414x896)

Operating Systems:

  • Windows 10/11
  • macOS (Monterey, Ventura, Sonoma)
  • iOS 15+
  • Android 11+