select.js

import {render, fireEvent} from '..'
import '@testing-library/jest-dom'
import Select from './components/Select'

// In this test file we showcase several ways to interact with a Select element.
test('Select component', async () => {
  let optionElement
  const {getByDisplayValue, getByText} = render(Select)

  // Get the Select element by using the initially displayed value.
  const select = getByDisplayValue('Tyrannosaurus')
  expect(select).toHaveValue('dino1')

  // Update it by manually sending a valid option value.
  await fireEvent.update(select, 'dino2')
  expect(select).toHaveValue('dino2')

  // We can trigger an update event by directly getting the <option> element.
  optionElement = getByText('Deinonychus')
  await fireEvent.update(optionElement)
  expect(select).toHaveValue('dino3')

  // ...even if option is within an <optgroup>.
  optionElement = getByText('Diplodocus')
  await fireEvent.update(optionElement)
  expect(select).toHaveValue('dino4')
})