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How to use waitForValueToChange method in testing-library-react-hooks
Best JavaScript code snippet using testing-library-react-hooks
AXClasses.py
Source:AXClasses.py 
...1002 """Convenience method to wait for a sheet to appear.1003 Returns: the sheet that appeared (element) or None1004 """1005 return self.waitForCreation(timeout, 'AXSheetCreated')1006 def waitForValueToChange(self, timeout=10):1007 """Convenience method to wait for value attribute of given element to1008 change.1009 Some types of elements (e.g. menu items) have their titles change,1010 so this will not work for those. This seems to work best if you set1011 the notification at the application level.1012 Returns: Element or None1013 """1014 # Want to identify that the element whose value changes matches this1015 # object's. Unique identifiers considered include role and position1016 # This seems to work best if you set the notification at the application1017 # level1018 callback = AXCallbacks.returnElemCallback1019 retelem = None1020 return self.waitFor(timeout, 'AXValueChanged', callback=callback, args=(retelem,))...
test.js
Source:test.js
...13 {14 options: { helloWorld: true }15 }16 )17 await waitForValueToChange(() => result.current.isLoading)18 expect(result.all).toMatchSnapshot()19 })20 test('getting from the cache', async () => {21 const { result } = renderHook(22 () => useThing(23 'EWhateverEntity',24 () => Promise.resolve('NEVER')25 ),26 { wrapper },27 {28 options: { helloWorld: true }29 }30 )31 expect(result.current.data).toBe('hello world')32 })33 test('dependend queries', async () => {34 const { result, waitForValueToChange } = renderHook(35 () => useThing(36 'EDependendEntity1',37 () => Promise.resolve('Cool, isn\'t it? ð')38 ),39 { wrapper }40 )41 await waitForValueToChange(() => result.current.isLoading)42 const { result: result2 } = renderHook(43 () => useThing(44 'EDependendEntity2',45 ({ options }) => Promise.resolve(`This text is passed through options from dependent entity "${options}"`),46 {47 skip: result.current.isLoading || result.current.isInitial,48 options: result.current.data49 }50 ),51 { wrapper }52 )53 await waitForValueToChange(() => result2.current.isLoading)54 expect(result2.current.data).toBe('This text is passed through options from dependent entity "Cool, isn\'t it? ð"')55 })56 test('initialData feature', async () => {57 const { result, waitForValueToChange } = renderHook(58 () => useThing(59 'EInitialDataEntity',60 () => Promise.resolve('Not initial anymore ð'),61 {62 initialData: ({ length = 5 }) => Array.from({ length }).map(() => 'A'),63 options: {64 length: 265 }66 }67 ),68 { wrapper }69 )70 expect(result.current.data).toEqual(['A', 'A'])71 await waitForValueToChange(() => result.current.isLoading)72 })73 test('dataMapper feature', async () => {74 const { result, waitForValueToChange } = renderHook(75 () => useThing(76 'EDataMapper',77 () => Promise.resolve([2, 4, 8]),78 {79 initialData: [],80 dataMapper: data => data.map(el => el * 2)81 }82 ),83 { wrapper }84 )85 await waitForValueToChange(() => result.current.isLoading)86 expect(result.current.mappedData).toEqual([4, 8, 16])87 })88 test('prevent multi fetching', async () => {89 let counter = 090 const { result, waitForValueToChange } = renderHook(91 () => useThing(92 'EMultiFetchingEntity',93 () => {94 counter += 195 return Promise.resolve(counter)96 },97 {98 options: { multiFetching: true }99 }100 ),101 { wrapper }102 )103 const { result: result2 } = renderHook(104 () => useThing(105 'EMultiFetchingEntity',106 () => {107 counter += 1108 return Promise.resolve(counter)109 },110 {111 options: { multiFetching: true }112 }113 ),114 { wrapper }115 )116 const { result: result3 } = renderHook(117 () => useThing(118 'EMultiFetchingEntity',119 () => {120 counter += 1121 return Promise.resolve(counter)122 },123 {124 options: { multiFetching: true }125 }126 ),127 { wrapper }128 )129 await waitForValueToChange(() => result.current.isLoading)130 expect(result.current.data).toEqual(1)131 expect(result2.current.data).toEqual(1)132 expect(result3.current.data).toEqual(1)133 })134 test('fetchMore feature', async () => {135 const MAX_ITEMS = 10136 const reducer = (state, { type, payload: data }, { toType }) => {137 if (type === toType(useThing.Types.Fulfilled)) {138 return {139 ...state,140 data: [141 ...(state?.data || []),142 ...(data || [])143 ]144 }145 }146 return state || {}147 }148 const { result, waitForValueToChange } = renderHook(149 () => useThing(150 'TFetchMoreEntity',151 ({ options: { limit, offset } }) => Promise.resolve(152 Array153 .from({ length: 10 })154 .map((_, index) => index)155 .slice(offset, limit + offset)156 ),157 {158 initialData: [],159 getFetchMore: ({ options: { limit, offset } }) => {160 if (limit + offset < MAX_ITEMS) {161 return { limit, offset: offset + limit }162 }163 return false164 },165 reducer,166 options: {167 limit: 5,168 offset: 0169 }170 }171 ),172 { wrapper }173 )174 await waitForValueToChange(() => result.current.isLoading)175 act(() => {176 result.current.fetchMore()177 })178 await waitForValueToChange(() => result.current.isLoading)179 expect(result.current.data.length).toBe(10)180 act(() => {181 result.current.fetchMore()182 })183 expect(result.current.data.length).toBe(10)184 })185 test('refetch feature', async () => {186 const { result, waitForValueToChange } = renderHook(187 () => useThing(188 'TRefetchEntity',189 () => Promise.resolve('hello world')190 ),191 { wrapper },192 {193 options: { helloWorld: true }194 }195 )196 await waitForValueToChange(() => result.current.isLoading)197 act(() => {198 result.current.refetch()199 })200 await waitForValueToChange(() => result.current.isLoading)201 expect(result.all).toMatchSnapshot()202 })203 test('debounce options changing', async () => {204 jest.useFakeTimers('modern')205 const debounceInterval = 1000206 const callback = jest.fn().mockImplementation(({ options }) => Promise.resolve(options))207 const { result, rerender, waitForValueToChange } = renderHook(208 props => useThing(209 'TDebounce',210 callback,211 {212 ...props,213 reducer: (state, { type, payload: data }, { toType }) => {214 if (type === toType('fulfilled')) {215 return {216 ...state,217 data: {218 ...state.data,219 [data.count]: data220 }221 }222 }223 return state || {}224 },225 selector: (state, { key, options }) => (226 state?.[key]?.data?.[options.count] || null227 )228 }229 ),230 {231 wrapper,232 initialProps: {233 debounceInterval,234 options: {235 count: 1236 }237 }238 }239 )240 await waitForValueToChange(() => result.current.isLoading)241 expect(result.current.data.count).toBe(1)242 expect(callback).toHaveBeenCalledTimes(1)243 rerender({244 debounceInterval,245 options: {246 count: 2247 }248 })249 rerender({250 debounceInterval,251 options: {252 count: 3253 }254 })255 rerender({256 debounceInterval,257 options: {258 count: 4259 }260 })261 act(() => jest.runAllTimers())262 await waitForValueToChange(() => result.current.isLoading)263 expect(callback).toHaveBeenCalledTimes(2)264 expect(result.current.data.count).toBe(4)265 jest.useRealTimers()266 })267 test('object reducer', async () => {268 const { result, waitForValueToChange } = renderHook(269 () => useThing(270 'TObjectReducer',271 () => Promise.resolve('hello world'),272 {273 reducer: {274 dictionary: {275 fulfilled: (state, { payload }) => ({276 ...state,277 data: {278 hello: payload279 }280 })281 }282 }283 }284 ),285 { wrapper },286 {287 options: { helloWorld: true }288 }289 )290 await waitForValueToChange(() => result.current.isLoading)291 expect(result.current.data.hello).toBe('hello world')292 })293 test('extend actions in return', async () => {294 const { result, waitForValueToChange } = renderHook(295 () => useThing(296 'TActions',297 () => Promise.resolve('hello world'),298 {299 reducer: {300 dictionary: {301 fulfilled: (state, { payload }) => ({302 ...state,303 data: {304 hello: payload305 }306 }),307 additionalAction: state => ({308 ...state,309 data: {310 hello: 'additional action'311 }312 })313 }314 }315 }316 ),317 { wrapper },318 {319 options: { helloWorld: true }320 }321 )322 await waitForValueToChange(() => result.current.isLoading)323 expect(result.current.actions.pending).toBeInstanceOf(Function)324 expect(result.current.actions.fulfilled).toBeInstanceOf(Function)325 expect(result.current.actions.error).toBeInstanceOf(Function)326 expect(result.current.actions.additionalAction).toBeInstanceOf(Function)327 })...
useGameState.spec.ts
Source:useGameState.spec.ts
...1415 moves.forEach(async (move) => {16 act(() => result.current.computeMove(move));1718 await waitForValueToChange(() => result.current.nextPlayer);19 });2021 expect(result.current.currentBoard).toEqual([22 "X", "O", "X",23 null, null, null,24 null, null, null25 ]);26 });27 });2829 describe("when the match is restarted", () => {30 const moves = [0, 1, 2, 3, 4, 5];31 let res: RenderResult<UseGameStateResult>;3233 beforeAll(async () => {34 const { result, waitForValueToChange } = renderHook(() => useGameState());35 res = result;3637 moves.forEach(async (move) => {38 act(() => result.current.computeMove(move));3940 await waitForValueToChange(() => result.current.nextPlayer);41 });4243 act(() => result.current.restartGame());44 });4546 it("should reset the board", () => {47 expect(res.current.currentBoard).toEqual([48 null, null, null,49 null, null, null,50 null, null, null51 ]);52 });5354 it("should reset step count", () => {55 expect(res.current.stepNumber).toBe(0);56 });57 });5859 describe('when "X" is the winner', () => {60 const testCases = [61 [[0, 3, 1, 4, 2]],62 [[0, 3, 4, 5, 8]],63 [[6, 1, 7, 2, 8]],64 [[0, 4, 3, 2, 6]],65 [[1, 3, 4, 6, 7]],66 [[2, 0, 5, 1, 8]],67 [[0, 7, 4, 6, 8]],68 [[2, 1, 4, 0, 6]]69 ];7071 it.each(testCases)("with %p moves", (moves) => {72 const { result, waitForValueToChange } = renderHook(() => useGameState());7374 moves.forEach(async (move) => {75 act(() => result.current.computeMove(move));7677 await waitForValueToChange(() => result.current.nextPlayer);78 });7980 expect(result.current.winner).toBe("X");81 });82 });8384 describe('when "O" is the winner', () => {85 const testCases = [86 [[3, 0, 4, 1, 6, 2]],87 [[0, 3, 1, 4, 6, 5]],88 [[0, 6, 1, 7, 3, 8]],89 [[1, 0, 2, 3, 7, 6]],90 [[8, 1, 6, 4, 0, 7]],91 [[0, 2, 1, 5, 4, 8]],92 [[6, 0, 7, 4, 1, 8]],93 [[0, 2, 1, 4, 8, 6]]94 ];9596 it.each(testCases)("with %p moves", (moves) => {97 const { result, waitForValueToChange } = renderHook(() => useGameState());9899 moves.forEach(async (move) => {100 act(() => result.current.computeMove(move));101102 await waitForValueToChange(() => result.current.nextPlayer);103 });104105 expect(result.current.winner).toBe("O");106 });107 });108109 describe("when the match ends in a draw", () => {110 const moves = [2, 1, 4, 6, 5, 8, 7, 3, 0];111112 it(`with ${moves.toString()} moves`, () => {113 const { result, waitForValueToChange } = renderHook(() => useGameState());114115 moves.forEach(async (move) => {116 act(() => result.current.computeMove(move));117118 await waitForValueToChange(() => result.current.nextPlayer);119 });120121 expect(result.current.draw).toBe(true);122 });123 });
...
useTransactions.test.js
Source:useTransactions.test.js
...26 const { result, waitForValueToChange } = renderHook(27 () => useTransactions(),28 { wrapper },29 )30 await waitForValueToChange(() => result.current.data)31 expect(result.current.data).toStrictEqual(getTransactionsReturn)32 expect(mockGetTransactions).toHaveBeenCalledTimes(1)33 })34 it('should post data correctly', async () => {35 const { result, waitForValueToChange } = renderHook(36 () => useTransactions(),37 { wrapper },38 )39 expect(mockPostTransactions).not.toHaveBeenCalled()40 const newTransaction = 241 act(() => {42 result.current.post(newTransaction)43 })44 await waitForValueToChange(() => result.current.data)45 expect(result.current.data).toStrictEqual([46 ...getTransactionsReturn,47 newTransaction,48 ])49 expect(mockPostTransactions).toHaveBeenCalledTimes(1)50 })51 it('should call callback on post', async () => {52 const { result, waitForValueToChange } = renderHook(53 () => useTransactions(),54 { wrapper },55 )56 const newTransaction = 257 const callback = jest.fn()58 expect(callback).not.toHaveBeenCalled()59 act(() => {60 result.current.post(newTransaction, callback)61 })62 await waitForValueToChange(() => result.current.data)63 expect(callback).toHaveBeenCalledTimes(1)64 })...
Using AI Code Generation
1import React from 'react';2import { render, screen } from '@testing-library/react';3import App from './App';4import userEvent from '@testing-library/user-event';5import { waitForValueToChange } from '@testing-library/react-hooks';6test('renders learn react link', async () => {7 render(<App />);8 const linkElement = screen.getByText(/learn react/i);9 expect(linkElement).toBeInTheDocument();10 userEvent.click(linkElement);11 const count = screen.getByText(/Count/i);12 expect(count).toBeInTheDocument();13 await waitForValueToChange(() => count);14 expect(count).toHaveTextContent('Count: 1');15});16import React from 'react';17import logo from './logo.svg';18import './App.css';19import useCounter from './useCounter';20function App() {21 const [count, increment] = useCounter();22 return (23 <img src={logo} className="App-logo" alt="logo" />24 <button onClick={increment}>Increment</button>25 <p>Count: {count}</p>26 );27}28export default App;29import { useState } from 'react';30const useCounter = () => {31 const [count, setCount] = useState(0);32 const increment = () => setCount(count + 1);33 return [count, increment];34};35export default useCounter;36import '@testing-library/jest-dom/extend-expect';37{38 "dependencies": {
Using AI Code Generation
1import { renderHook, act } from '@testing-library/react-hooks'2import { useCounter } from './counter'3test('should increment counter', async () => {4 const { result, waitForValueToChange } = renderHook(() => useCounter())5 act(() => result.current.increment())6 await waitForValueToChange(() => result.current.count)7 expect(result.current.count).toBe(1)8})9import { useState } from 'react'10export const useCounter = () => {11 const [count, setCount] = useState(0)12 const increment = () => setCount(count + 1)13 return { count, increment }14}15import { renderHook, act } from '@testing-library/react-hooks'16import { useCounter } from './counter'17test('should increment counter', async () => {18 const { result, waitForNextUpdate } = renderHook(() => useCounter())19 act(() => result.current.increment())20 await waitForNextUpdate()21 expect(result.current.count).toBe(1)22})23import { useState } from 'react'24export const useCounter = () => {25 const [count, setCount] = useState(0)26 const increment = () => setCount(count + 1)27 return { count, increment }28}29import { renderHook, act } from '@testing-library/react-hooks'30import { useCounter } from './counter'31test('should increment counter', async () => {32 const { result, waitForNextUpdate } = renderHook(() => useCounter())33 act(() => result.current.increment())34 await waitForNextUpdate()35 expect(result.current.count).toBe(1)36})37import { useState } from 'react'38export const useCounter = () => {39 const [count, setCount] = useState(0)40 const increment = () => setCount(count + 1)41 return { count, increment }42}43import { renderHook, act } from '@testing-library/react-hooks'44import { useCounter } from './counter'45test('should increment counter', async () => {46 const {
Using AI Code Generation
1import { renderHook, act } from "@testing-library/react-hooks";2import { useCounter } from "./counter";3describe("useCounter", () => {4 it("should increment the counter", () => {5 const { result } = renderHook(() => useCounter());6 act(() => {7 result.current.increment();8 });9 expect(result.current.count).toBe(1);10 });11 it("should decrement the counter", () => {12 const { result } = renderHook(() => useCounter());13 act(() => {14 result.current.decrement();15 });16 expect(result.current.count).toBe(-1);17 });18 it("should increment the counter after 1 second", async () => {19 const { result, waitForValueToChange } = renderHook(() => useCounter());20 act(() => {21 result.current.incrementDelayed();22 });23 await waitForValueToChange(() => result.current.count);24 expect(result.current.count).toBe(1);25 });26});
Using AI Code Generation
1import { renderHook, act } from '@testing-library/react-hooks';2import useCounter from './counter';3describe('useCounter', () => {4 it('should increment counter', () => {5 const { result } = renderHook(() => useCounter());6 act(() => {7 result.current.increment();8 });9 expect(result.current.count).toBe(1);10 });11 it('should decrement counter', () => {12 const { result } = renderHook(() => useCounter());13 act(() => {14 result.current.decrement();15 });16 expect(result.current.count).toBe(-1);17 });18 it('should increment counter after 1 second', async () => {19 const { result, waitForValueToChange } = renderHook(() => useCounter());20 act(() => {21 result.current.incrementAsync();22 });23 await waitForValueToChange(() => result.current.count);24 expect(result.current.count).toBe(1);25 });26});27import { useState, useCallback } from 'react';28export default function useCounter() {29 const [count, setCount] = useState(0);30 const increment = useCallback(() => {31 setCount((count) => count + 1);32 }, []);33 const decrement = useCallback(() => {34 setCount((count) => count - 1);35 }, []);36 const incrementAsync = useCallback(() => {37 setTimeout(() => {38 setCount((count) => count + 1);39 }, 1000);40 }, []);41 return { count, increment, decrement, incrementAsync };42}43import { renderHook, act } from '@testing-library/react-hooks';44import useCounter from './counter';45describe('useCounter', () => {46 it('should increment counter', () => {47 const { result } = renderHook(() => useCounter());
Using AI Code Generation
1import { waitForValueToChange } from '@testing-library/react-hooks'2import { renderHook } from '@testing-library/react-hooks'3import { useFetch } from './useFetch'4it('should fetch data', async () => {5 await waitForValueToChange(() => result.current.data)6 expect(result.current.data).toEqual({ userId: 1, id: 1, title: 'delectus aut autem', completed: false })7})8import { useState, useEffect } from 'react'9import axios from 'axios'10export const useFetch = (url) => {11 const [data, setData] = useState(null)12 const [error, setError] = useState(null)13 const [loading, setLoading] = useState(true)14 useEffect(() => {15 const fetchData = async () => {16 try {17 const response = await axios.get(url)18 setData(response.data)19 } catch (error) {20 setError(error)21 } finally {22 setLoading(false)23 }24 }25 fetchData()26 }, [url])27 return { data, error, loading }28}29import { renderHook } from '@testing-library/react-hooks'30import { useFetch } from './useFetch'31it('should fetch data', async () => {32 await waitForNextUpdate()33 expect(result.current.data).toEqual({
Using AI Code Generation
1import { renderHook } from '@testing-library/react-hooks';2import { useCounter } from './useCounter';3test('should use custom hook', async () => {4 const { result, waitForValueToChange } = renderHook(() => useCounter());5 expect(result.current.count).toBe(0);6 result.current.increment();7 expect(result.current.count).toBe(1);8 await waitForValueToChange(() => result.current.count);9 expect(result.current.count).toBe(2);10});11import { useState } from 'react';12export const useCounter = () => {13 const [count, setCount] = useState(0);14 const increment = () => {15 setTimeout(() => {16 setCount(count + 1);17 }, 1000);18 };19 return {20 };21};
Using AI Code Generation
1import { render, waitForValueToChange } from '@testing-library/react-hooks'2import useFetch from './useFetch'3test('should return the data', async () => {4 await waitForNextUpdate()5 expect(result.current.data).toEqual('data')6})7import { useState } from 'react'8export default function useFetch(url) {9 const [data, setData] = useState(null)10 useEffect(() => {11 fetch(url).then(res => res.text()).then(data => setData(data))12 }, [url])13 return { data }14}15import { render, waitForValueToChange } from '@testing-library/react-hooks'16import useFetch from './useFetch'17test('should return the data', async () => {18 await waitForNextUpdate()19 expect(result.current.data).toEqual('data')20})21import { useState } from 'react'22export default function useFetch(url) {23 const [data, setData] = useState(null)24 useEffect(() => {25 fetch(url).then(res => res.text()).then(data => setData(data))26 }, [url])27 return { data }28}29import { render, waitForValueToChange } from '@testing-library/react-hooks'30import useFetch from './useFetch'31test('should return the data', async () => {32 await waitForValueToChange(() => result.current.data)33 expect(result.current.data).toEqual('data')34})35import { useState } from 'react'36export default function useFetch(url) {37 const [data, setData] = useState(null)38 useEffect(() => {39 fetch(url).then
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