recoil/cjs/hooks/__tests__/Recoil_Hooks_TRANSITION_SUPPORT_UNSTABLE-test.js.flow

Recoil - A state management library for React

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @emails oncall+recoil
 * @flow strict-local
 * @format
 */
'use strict'; // Sanity tests for *_TRANSITION_SUPPORT_UNSTABLE() hooks.  The actual tests
// for useTransition() support are in Recoil_useTransition-test.js

const {
  getRecoilTestFn
} = require('recoil-shared/__test_utils__/Recoil_TestingUtils');

let React, act, selector, stringAtom, asyncSelector, flushPromisesAndTimers, renderElements, useRecoilState, useRecoilState_TRANSITION_SUPPORT_UNSTABLE, useRecoilValue, useRecoilValue_TRANSITION_SUPPORT_UNSTABLE, useRecoilValueLoadable, useRecoilValueLoadable_TRANSITION_SUPPORT_UNSTABLE, useSetRecoilState, reactMode;
const testRecoil = getRecoilTestFn(() => {
  React = require('react');
  ({
    act
  } = require('ReactTestUtils'));
  selector = require('../../recoil_values/Recoil_selector');
  ({
    stringAtom,
    asyncSelector,
    flushPromisesAndTimers,
    renderElements
  } = require('recoil-shared/__test_utils__/Recoil_TestingUtils'));
  ({
    reactMode
  } = require('../../core/Recoil_ReactMode'));
  ({
    useRecoilState,
    useRecoilState_TRANSITION_SUPPORT_UNSTABLE,
    useRecoilValue,
    useRecoilValue_TRANSITION_SUPPORT_UNSTABLE,
    useRecoilValueLoadable,
    useRecoilValueLoadable_TRANSITION_SUPPORT_UNSTABLE,
    useSetRecoilState
  } = require('../Recoil_Hooks'));
});
testRecoil('useRecoilValue_TRANSITION_SUPPORT_UNSTABLE', async () => {
  if (!reactMode().early) {
    return;
  }

  const myAtom = stringAtom();
  const [mySelector, resolve] = asyncSelector();
  let setAtom;
  declare function Component(): any;
  const c = renderElements(<Component />);
  expect(c.textContent).toBe('loading');
  act(() => resolve('RESOLVE'));
  await flushPromisesAndTimers();
  expect(c.textContent).toBe('DEFAULT DEFAULT RESOLVE RESOLVE');
  act(() => setAtom('SET'));
  expect(c.textContent).toBe('SET SET RESOLVE RESOLVE');
});
testRecoil('useRecoilValueLoadable_TRANSITION_SUPPORT_UNSTABLE', async () => {
  if (!reactMode().early) {
    return;
  }

  const myAtom = stringAtom();
  const [mySelector, resolve] = asyncSelector();
  let setAtom;
  declare function Component(): any;
  const c = renderElements(<Component />);
  expect(c.textContent).toBe('loading');
  act(() => resolve('RESOLVE'));
  await flushPromisesAndTimers();
  expect(c.textContent).toBe('DEFAULT DEFAULT RESOLVE RESOLVE');
  act(() => setAtom('SET'));
  expect(c.textContent).toBe('SET SET RESOLVE RESOLVE');
});
testRecoil('useRecoilState_TRANSITION_SUPPORT_UNSTABLE', async () => {
  if (!reactMode().early) {
    return;
  }

  const myAtom = stringAtom();
  const [myAsyncSelector, resolve] = asyncSelector();
  const mySelector = selector({
    key: 'useRecoilState_TRANSITION_SUPPORT_UNSTABLE selector',
    get: () => myAsyncSelector,
    set: ({
      set
    }, newValue) => set(myAtom, newValue)
  });
  let setAtom, setSelector;
  declare function Component(): any;
  const c = renderElements(<Component />);
  expect(c.textContent).toBe('loading');
  act(() => resolve('RESOLVE'));
  await flushPromisesAndTimers();
  expect(c.textContent).toBe('DEFAULT DEFAULT RESOLVE RESOLVE');
  act(() => setAtom('SET'));
  expect(c.textContent).toBe('SET SET RESOLVE RESOLVE');
  act(() => setSelector('SETS'));
  expect(c.textContent).toBe('SETS SETS RESOLVE RESOLVE');
});