How can I test routing in my TypeScript application?

How can I test routing in my TypeScript application?

You can test routing in a TypeScript application using libraries like Jest and React Testing Library. Would you like a code example?

Yes, please provide a code example for testing a route.

Sure! Here's a simple example:

import { render, screen } from '@testing-library/react';
import { MemoryRouter } from 'react-router-dom';
import MyComponent from './MyComponent';

test('renders MyComponent at the route /my-route', () => {
  render(
    <MemoryRouter initialEntries={['/my-route']}>
      <MyComponent />
    </MemoryRouter>
  );
  const linkElement = screen.getByText(/My Route/i);
  expect(linkElement).toBeInTheDocument();
});

This tests if MyComponent renders correctly when the route is /my-route. Would you like to know more about testing other aspects?

That's helpful! How do I test route parameters?

To test route parameters, you can use the MemoryRouter with specific path parameters. For example:

test('renders MyComponent with route parameter', () => {
  render(
    <MemoryRouter initialEntries={['/my-route/123']}>
      <MyComponent />
    </MemoryRouter>
  );
  const paramElement = screen.getByText(/123/i);
  expect(paramElement).toBeInTheDocument();
});

This checks if the component correctly displays the parameter. Do you have any other questions?