Checking text appears inside an element using react testing library

Another way to do this

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

...

  render(<MyComponent />);
  expect(screen.getByTestId('my-test-id')).toHaveTextContent('some text');

Note it is now recommended to use screen instead of the results of render.

(StackOverflow post the points to a KC Dobbs Article explaining why: react-testing-library - Screen vs Render queries)

Better to use within for this sort of things:

render(<MyComponent />)
const { getByText } = within(screen.getByTestId('my-test-id'))
expect(getByText('some text')).toBeInTheDocument()