storybook/docs/snippets/preact/component-test-with-testing-library.js.mdx

```js
// Form.test.js

import '@testing-library/jest-dom/extend-expect';

import { h } from 'preact';

import { render, fireEvent } from '@testing-library/preact';

import { InvalidForm } from './LoginForm.stories'; //👈 Our stories imported here.

it('Checks if the form is valid', () => {
  const { getByTestId, getByText } = render(<InvalidForm {...InvalidForm.args} />);

  fireEvent.click(getByText('Submit'));

  const isFormValid = getByTestId('invalid-form');
  expect(isFormValid).toBeInTheDocument();
});
```