Skip to main content

Testing Strategies

Thorough testing ensures your MongoNext app is reliable, maintainable, and ready for production. Use a mix of unit, integration, and end-to-end (E2E) tests for full coverage.

1. Unit Testing​

  • Test individual functions, components, and utilities in isolation.
  • Use Jest as the primary test runner.
  • Use React Testing Library for React component tests.

Example:

import { render, screen } from '@testing-library/react';
import ProductCard from './ProductCard';

test('renders product name', () => {
  render(<ProductCard product={{ name: 'Shirt' }} />);
  expect(screen.getByText('Shirt')).toBeInTheDocument();
});

2. Integration Testing​

  • Test how components and modules work together (e.g., form submission, API calls).
  • Mock API responses and database calls for predictable results.

3. End-to-End (E2E) Testing​

  • Simulate real user flows in the browser.
  • Use Cypress or Playwright for E2E tests.
  • Test critical paths: login, product purchase, admin actions, etc.

4. Best Practices​

  • Write tests for new features and bug fixes.
  • Use descriptive test names and keep tests independent.
  • Run tests automatically in CI/CD (e.g., GitHub Actions, Vercel).
  • Aim for high coverage, but prioritize critical business logic and user flows.

By following these strategies, you'll catch bugs early and ship with confidence.