Comment tester le matériel UI Autocomplete avec la bibliothèque de tests de réact

Question

J'utilise le matériau-ui autocomplete composant et j'essaie de le tester à l'aide de réact-test-bibliothèque

Composant:

/* eslint-disable no-use-before-define */
import TextField from '@material-ui/core/TextField';
import Autocomplete from '@material-ui/lab/Autocomplete';
import React from 'react';

export default function ComboBox() {
  const [autocompleteInputValue, setAutocompleteInputValue] = React.useState('');
  const [isAutocompleteOpen, setIsAutocompleteOpen] = React.useState(false);
  const renderInput = (params: any) => <TextField {...params} label='openOnFocus: false' variant='outlined' />;

  const getTitle = (option: any) => option.title;

  const handleAutocompleteInputChange = (event: any, value: string) => {
    setAutocompleteInputValue(value);
  };

  const updateAutocompletePopper = () => {
    setIsAutocompleteOpen(!isAutocompleteOpen);
  };

  return (
    <Autocomplete
      id='autocompleteSearch'
      data-testid='autocomplete-search'
      disableClearable={true}
      renderOption={getTitle}
      getOptionLabel={getTitle}
      renderInput={renderInput}
      options={top100Films}
      clearOnEscape={true}
      onInputChange={handleAutocompleteInputChange}
      inputValue={autocompleteInputValue}
      open={isAutocompleteOpen}
      onOpen={updateAutocompletePopper}
      onClose={updateAutocompletePopper}
      style={{ width: 300 }}
      ListboxProps={{ 'data-testid': 'list-box' }}
    />
  );
}

// Top 100 films as rated by IMDb users. http://www.imdb.com/chart/top
export const top100Films = [
  { title: 'The Shawshank Redemption', year: 1994 },
  { title: 'The Godfather', year: 1972 },
  { title: 'The Godfather: Part II', year: 1974 },
  { title: 'The Dark Knight', year: 2008 },
  { title: '12 Angry Men', year: 1957 },
  { title: 'Schindlers List', year: 1993 },
  { title: 'Pulp Fiction', year: 1994 },
  { title: 'The Lord of the Rings: The Return of the King', year: 2003 },
  { title: 'The Good, the Bad and the Ugly', year: 1966 },
  { title: 'Fight Club', year: 1999 },
  { title: 'The Lord of the Rings: The Fellowship of the Ring', year: 2001 },
  { title: 'Star Wars: Episode V - The Empire Strikes Back', year: 1980 },
  { title: 'Forrest Gump', year: 1994 },
  { title: 'Inception', year: 2010 },
  { title: 'The Lord of the Rings: The Two Towers', year: 2002 },
  { title: 'One Flew Over the Cuckoos Nest', year: 1975 },
  { title: 'Goodfellas', year: 1990 },
  { title: 'The Matrix', year: 1999 },
  { title: 'Seven Samurai', year: 1954 },
  { title: 'Star Wars: Episode IV - A New Hope', year: 1977 },
  { title: 'City of God', year: 2002 },
  { title: 'Se7en', year: 1995 },
  { title: 'The Silence of the Lambs', year: 1991 },
  { title: 'Its a Wonderful Life', year: 1946 },
  { title: 'Life Is Beautiful', year: 1997 },
  { title: 'The Usual Suspects', year: 1995 },
  { title: 'Léon: The Professional', year: 1994 },
  { title: 'Spirited Away', year: 2001 },
  { title: 'Saving Private Ryan', year: 1998 },
  { title: 'Once Upon a Time in the West', year: 1968 },
  { title: 'American History X', year: 1998 },
  { title: 'Interstellar', year: 2014 },
  { title: 'Casablanca', year: 1942 },
  { title: 'City Lights', year: 1931 },
  { title: 'Psycho', year: 1960 },
  { title: 'The Green Mile', year: 1999 },
  { title: 'The Intouchables', year: 2011 },
  { title: 'Modern Times', year: 1936 },
  { title: 'Raiders of the Lost Ark', year: 1981 },
  { title: 'Rear Window', year: 1954 },
  { title: 'The Pianist', year: 2002 },
  { title: 'The Departed', year: 2006 },
  { title: 'Terminator 2: Judgment Day', year: 1991 },
  { title: 'Back to the Future', year: 1985 },
  { title: 'Whiplash', year: 2014 },
  { title: 'Gladiator', year: 2000 },
  { title: 'Memento', year: 2000 },
  { title: 'The Prestige', year: 2006 },
  { title: 'The Lion King', year: 1994 },
  { title: 'Apocalypse Now', year: 1979 },
  { title: 'Alien', year: 1979 },
  { title: 'Sunset Boulevard', year: 1950 },
  {
    title: 'Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb',
    year: 1964,
  },
  { title: 'The Great Dictator', year: 1940 },
  { title: 'Cinema Paradiso', year: 1988 },
  { title: 'The Lives of Others', year: 2006 },
  { title: 'Grave of the Fireflies', year: 1988 },
  { title: 'Paths of Glory', year: 1957 },
  { title: 'Django Unchained', year: 2012 },
  { title: 'The Shining', year: 1980 },
  { title: 'WALL·E', year: 2008 },
  { title: 'American Beauty', year: 1999 },
  { title: 'The Dark Knight Rises', year: 2012 },
  { title: 'Princess Mononoke', year: 1997 },
  { title: 'Aliens', year: 1986 },
  { title: 'Oldboy', year: 2003 },
  { title: 'Once Upon a Time in America', year: 1984 },
  { title: 'Witness for the Prosecution', year: 1957 },
  { title: 'Das Boot', year: 1981 },
  { title: 'Citizen Kane', year: 1941 },
  { title: 'North by Northwest', year: 1959 },
  { title: 'Vertigo', year: 1958 },
  { title: 'Star Wars: Episode VI - Return of the Jedi', year: 1983 },
  { title: 'Reservoir Dogs', year: 1992 },
  { title: 'Braveheart', year: 1995 },
  { title: 'M', year: 1931 },
  { title: 'Requiem for a Dream', year: 2000 },
  { title: 'Amélie', year: 2001 },
  { title: 'A Clockwork Orange', year: 1971 },
  { title: 'Like Stars on Earth', year: 2007 },
  { title: 'Taxi Driver', year: 1976 },
  { title: 'Lawrence of Arabia', year: 1962 },
  { title: 'Double Indemnity', year: 1944 },
  { title: 'Eternal Sunshine of the Spotless Mind', year: 2004 },
  { title: 'Amadeus', year: 1984 },
  { title: 'To Kill a Mockingbird', year: 1962 },
  { title: 'Toy Story 3', year: 2010 },
  { title: 'Logan', year: 2017 },
  { title: 'Full Metal Jacket', year: 1987 },
  { title: 'Dangal', year: 2016 },
  { title: 'The Sting', year: 1973 },
  { title: '2001: A Space Odyssey', year: 1968 },
  { title: 'Singin in the Rain', year: 1952 },
  { title: 'Toy Story', year: 1995 },
  { title: 'Bicycle Thieves', year: 1948 },
  { title: 'The Kid', year: 1921 },
  { title: 'Inglourious Basterds', year: 2009 },
  { title: 'Snatch', year: 2000 },
  { title: '3 Idiots', year: 2009 },
  { title: 'Monty Python and the Holy Grail', year: 1975 },
];

Selon l'option choisie par rapport à l'auto-compplète, je fais d'autres choses, comme rendant une puce, un autre composant, etc. Mais pour faire des choses simples, je ne teste initialement que lorsque l'utilisateur se concentre dans le champ de saisie, la pop up est Montré, donc plus tard, je peux cliquer sur une option dans cette fenêtre contextuelle et tester que tout le reste fonctionne comme prévu. Je vérifie la pop up utilisant data-testid J'ai assigné à la liste de liste via ListboxProps pupi d'autocomplete:

test:

import {
    fireEvent,
    getByRole as globalGetByRole,
    getByText as globalGetByText,
    render,
} from '@testing-library/react';
import React from 'react';
import ComboBox, { top100Films } from './AutoComplete';

test('that autocomplete works', async () => {
    const { getByTestId, getByRole, queryByRole } = render(<ComboBox />, {});

    const AutoCompleteSearch = getByTestId('autocomplete-search');
    const Input = globalGetByRole(AutoCompleteSearch, 'textbox');

    expect(queryByRole('listbox')).toBeNull();

    fireEvent.mouseDown(Input);
    const ListBox = getByRole('listbox');
    expect(ListBox).toBeDefined();
    const menuItem1 = globalGetByText(ListBox, top100Films[0].title);
    fireEvent.click(menuItem1);
    expect(queryByRole('listbox')).toBeNull();

    fireEvent.mouseDown(Input);
    const ListBoxAfter = getByRole('listbox');
    expect(ListBoxAfter).toBeDefined();
    const menuItem2 = globalGetByText(ListBoxAfter, top100Films[1].title);
    fireEvent.click(menuItem2);
    expect(queryByRole('listbox')).toBeNull();
});

Mais cela échoue avec: Unable to find an element by: [data-testid="list-box"]. Qu'est-ce que je fais mal?

[~ # ~] Edit [~ # ~]: J'ai tiré mouseDown sur Input et a été capable de tester avec succès que la popup est ouverte. J'ai utilisé listbox rôle au lieu d'un data-testid Pour vérifier que la popup s'est ouverte. La même chose peut être faite avec data-testid ainsi que. Ensuite, j'ai choisi un élément d'options d'autocomplete et la pop up fermée. Maintenant, j'ai essayé d'ouvrir à nouveau la popup pour la 2e fois et ici, elle échoue à nouveau. Pas capable d'ouvrir pour la 2e fois en utilisant mouseDown événement.

Answer 1

Vous pouvez utiliser la fonction OninputChange pour savoir si l'entrée a été modifiée.

 test('my test', () => {
    const { container } = render(
      <Autocomplete
        noOptionsText="no Option"
        getOptionLabel={(option) => option.name}
        onInputChange={(__, value) => {
          //implements logic when value is selected
        }}
        multiple
        id="my-id"
        options={[{ name: 'My name 1' }]}
        renderInput={(params) => <TextField {...params} label="My Label" />}
      />
    )
    const input = container.querySelector('#my-id')
    fireEvent.change(input, { target: { value: { name: 'My name 1' } } })
  })

Answer 2

// make sure autocomplete reactions/results do not already exist
expect(screen.queryByText(/Loading/)).not.toBeInTheDocument()
expect(screen.queryByText(/Van Halen/)).not.toBeInTheDocument()

// fill out autocomplete
const faveBand = screen.getByLabelText(/Favorite Band/)
userEvent.type(faveBand, 'Van H')
expect(faveBand).toHaveValue('Van H')

// witness autocomplete working
expect(screen.getByText(/Loading/)).toBeInTheDocument()

// wait for response (i used an async Material-UI autocomplete)
// favebands is a data-testid attribute value in my autocomplete 
// component, e.g. ListboxProps={{ 'data-testid': 'favebands' }}
await waitFor(() => getByTestId('favebands'))

// verify autocomplete items are visible
expect(screen.getByText(/Van Halen/)).toBeInTheDocument()

// click on autocomplete item
const faveBandItem = screen.getByText('Van Halen')
userEvent.click(faveBandItem)

// verify autocomplete has new value
expect(faveBand).toHaveValue('Van Halen')    

J'importe uerevent, waitfor et écran comme ...

import { screen, waitFor } from '@testing-library/react'
import userEvent from '@testing-library/user-event'

Answer 3

le problème ici est que l'autocomplete utilise par défaut utilise des portails et rend les options dans le corps ..Quelle n'est pas présente dans le conteneur rendu, vous devez rendre l'autocomplète dans le corps du document