How to test Material-UI Checkbox is checked with react-testing-library?

Question

Seems like the way Material UI works is it renders a different SVG when the checkbox is clicked, and not changing the attributes or anything on the actual input element. So how do I actually test that the element is checked in line with the react-testing-library philosophy?

Here's a rough example of the

Checkbox component usage

export const CheckBoxContainer = () => (
  <Checkbox inputProps={{ 'data-testid': `clickable-checkbox-1234` }} data-testid={`checkbox-1234`} />
);

Test

test('check the box', async () => {
  const { getByTestId } = render(<CheckBoxContainer />);
  await waitForElement(() => getByTestId(`checkbox-1234`));
  const checkbox = getByTestId(`checkbox-1234`);
  fireEvent.click(getByTestId(`clickable-checkbox-1234`));
  expect(checkbox).toHaveAttribute('checked');
});

Generated HTML by Material UI

<span
  class="MuiButtonBase-root-54 MuiIconButton-root-48 MuiSwitchBase-root-231 MuiCheckbox-root-225 MuiCheckbox-colorSecondary-230 MuiSwitchBase-checked-232 MuiCheckbox-checked-226"
  data-testid="checkbox-1234"
>
  <span class="MuiIconButton-label-53">
    <svg
      class="MuiSvgIcon-root-57"
      focusable="false"
      viewBox="0 0 24 24"
      aria-hidden="true"
      role="presentation"
    >
      <path
        d="M19 3H5c-1.11 0-2 .9-2 2v14c0 1.1.89 2 2 2h14c1.11 0 2-.9 2-2V5c0-1.1-.89-2-2-2zm-9 14l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z"
      ></path>
    </svg>
    <input
      class="MuiSwitchBase-input-234"
      type="checkbox"
      data-indeterminate="false"
      data-testid="clickable-checkbox-1234"
      value=""
    />
  </span>
  <span class="MuiTouchRipple-root-66"> </span>
</span>

Answer 1

The easiest way I have found to locate a checkbox is by adding a label to it

<FormControlLabel
  htmlFor="first-checkBox"
  label="First Checkbox"
  control={ <Checkbox
        checked={checked}
        onChange={handleChange}
        inputProps={{ 'aria-label': 'primary checkbox' }}
      />
  }
/>

later in test case

const checkboxEl = screen.getByLabelText('First Checkbox') as HTMLInputElement
expect(checkboxEl).toBeChecked()

if the test fails because doesn't recognize toBeChecked as part of the available assertions is because you need to import

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