How to use waitForNextUpdate method in testing-library-react-hooks

Best JavaScript code snippet using testing-library-react-hooks

use-stepper.test.ts

Source:use-stepper.test.ts Github

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...152describe('useStepper', () => {153 it('should return CURRENT step', async () => {154 const {result, waitForNextUpdate} = renderHook(() => useStepper(mockSimpleSteps))155 expect(result.current.isLoading).toBe(true)156 await waitForNextUpdate() // wait for stepper to init157 expect(result.current.currentStep?.address).toEqual('1')158 })159 it('should go to NEXT step in a flat steps structure', async () => {160 const {result, waitForNextUpdate} = renderHook(() => useStepper(mockSimpleSteps))161 await waitForNextUpdate() // wait for stepper to init162 expect(result.current.currentStep?.address).toEqual('1')163 result.current.goToNextStep()164 await waitForNextUpdate()165 expect(result.current.currentStep?.address).toEqual('2')166 result.current.goToNextStep()167 await waitForNextUpdate()168 expect(result.current.currentStep?.address).toEqual('3')169 })170 it('should not break when there is no NEXT step', async () => {171 const {result, waitForNextUpdate} = renderHook(() => useStepper(mockSimpleSteps, '3'))172 await waitForNextUpdate() // wait for stepper to init173 expect(result.current.currentStep?.address).toEqual('3')174 result.current.goToNextStep()175 result.current.goToNextStep()176 expect(result.current.currentStep?.address).toEqual('3')177 })178 it('should go to NEXT step in a nested steps structure', async () => {179 const {result, waitForNextUpdate} = renderHook(() => useStepper(mockAdvancedSteps))180 await waitForNextUpdate() // wait for stepper to init181 expect(result.current.currentStep?.address).toEqual('2/2.1/2.1.1')182 result.current.goToNextStep()183 await waitForNextUpdate()184 expect(result.current.currentStep?.address).toEqual('2/2.1/2.1.3')185 result.current.goToNextStep()186 await waitForNextUpdate()187 expect(result.current.currentStep?.address).toEqual('2/2.2/2.2.1')188 result.current.goToNextStep()189 await waitForNextUpdate()190 expect(result.current.currentStep?.address).toEqual('2/2.2/2.2.2')191 result.current.goToNextStep()192 await waitForNextUpdate()193 expect(result.current.currentStep?.address).toEqual('3')194 })195 it('should go to PREV step in a flat steps structure', async () => {196 const {result, waitForNextUpdate} = renderHook(() => useStepper(mockSimpleSteps, '3'))197 await waitForNextUpdate() // wait for stepper to init198 expect(result.current.currentStep?.address).toEqual('3')199 result.current.goToPrevStep()200 await waitForNextUpdate()201 expect(result.current.currentStep?.address).toEqual('2')202 })203 it('should NOT go to PREV step if current canGoBack is false', async () => {204 const {result, waitForNextUpdate} = renderHook(() => useStepper(mockSimpleSteps, '2'))205 await waitForNextUpdate() // wait for stepper to init206 expect(result.current.currentStep.canGoBack).toBe(false)207 result.current.goToPrevStep()208 expect(result.current.currentStep?.address).toEqual('2')209 })210 it('should not break when there is no PREV step', async () => {211 const {result, waitForNextUpdate} = renderHook(() => useStepper(mockSimpleSteps, '1'))212 await waitForNextUpdate() // wait for stepper to init213 expect(result.current.currentStep?.address).toEqual('1')214 result.current.goToPrevStep()215 result.current.goToPrevStep()216 expect(result.current.currentStep?.address).toEqual('1')217 })218 it('should go to PREV step in a nested steps structure', async () => {219 const {result, waitForNextUpdate} = renderHook(() => useStepper(mockAdvancedSteps, '3'))220 await waitForNextUpdate() // wait for stepper to init221 expect(result.current.currentStep?.address).toEqual('3')222 result.current.goToPrevStep()223 await waitForNextUpdate()224 expect(result.current.currentStep?.address).toEqual('2/2.2/2.2.2')225 result.current.goToPrevStep()226 await waitForNextUpdate()227 expect(result.current.currentStep?.address).toEqual('2/2.2/2.2.1')228 result.current.goToPrevStep()229 await waitForNextUpdate()230 expect(result.current.currentStep?.address).toEqual('2/2.1/2.1.3')231 result.current.goToPrevStep()232 await waitForNextUpdate()233 expect(result.current.currentStep?.address).toEqual('2/2.1/2.1.1')234 expect(result.current.currentStep.canGoBack).toBe(false)235 })236 it('should skip steps when their shouldSkip returns true', async () => {237 const steps: Steps = {238 initialStep: '1',239 '1': {240 next: '2'241 },242 '2': {243 next: '3',244 shouldSkip: () => true245 },246 '3': {247 next: null248 }249 }250 const {result, waitForNextUpdate} = renderHook(() => useStepper(steps))251 await waitForNextUpdate() // wait for stepper to init252 expect(result.current.currentStep?.address).toEqual('1')253 result.current.goToNextStep()254 await waitForNextUpdate()255 expect(result.current.currentStep?.address).toEqual('3')256 result.current.goToPrevStep()257 await waitForNextUpdate()258 expect(result.current.currentStep?.address).toEqual('1')259 })...

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useForm.test.ts

Source:useForm.test.ts Github

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...20 );21 act(() => {22 result.current.submit();23 });24 await waitForNextUpdate({ timeout: 100 });25 expect(result.current.touches.test).toBeFalsy();26 });27 it('sets isDirty to true after submission', async () => {28 const onSubmit = jest.fn();29 const { result, waitForNextUpdate } = renderHook(() =>30 useForm({31 onSubmit,32 }),33 );34 act(() => {35 result.current.submit();36 });37 await waitForNextUpdate({ timeout: 100 });38 expect(result.current.isDirty).toBe(true);39 });40 it('will call onSubmit when the form is submitted', async () => {41 const onSubmit = jest.fn();42 const { result, waitForNextUpdate } = renderHook(() =>43 useForm({44 onSubmit,45 }),46 );47 act(() => {48 result.current.submit();49 });50 await waitForNextUpdate({ timeout: 100 });51 expect(onSubmit).toBeCalledTimes(1);52 });53 });54 describe('with non-constraint validation', () => {55 it('will not set touch on inputs', async () => {56 const onSubmit = jest.fn();57 const { result, waitForNextUpdate } = renderHook(() =>58 useForm({59 onSubmit,60 validators: {61 email: () => '',62 },63 initialValues: {64 test: 'hello',65 },66 }),67 );68 act(() => {69 result.current.submit();70 });71 await waitForNextUpdate();72 expect(result.current.touches.test).toBeFalsy();73 });74 it('sets isDirty to true after submission of an optional form', async () => {75 const onSubmit = jest.fn();76 const { result, waitForNextUpdate } = renderHook(() =>77 useForm({78 onSubmit,79 validators: {80 email: () => '',81 },82 }),83 );84 act(() => {85 result.current.submit();86 });87 await waitForNextUpdate();88 expect(result.current.isDirty).toBe(true);89 });90 it('sets isDirty to true after submission of a form', async () => {91 const onSubmit = jest.fn();92 const { result, waitForNextUpdate } = renderHook(() =>93 useForm({94 onSubmit,95 validators: {96 email: () => 'false',97 },98 }),99 );100 act(() => {101 result.current.submit();102 });103 await waitForNextUpdate();104 expect(result.current.isDirty).toBe(true);105 });106 it('will call onSubmit when the form is optional', async () => {107 const onSubmit = jest.fn();108 const { result, waitForNextUpdate } = renderHook(() =>109 useForm({110 onSubmit,111 validators: {112 email: () => '',113 },114 }),115 );116 act(() => {117 result.current.submit();118 });119 await waitForNextUpdate();120 expect(onSubmit).toBeCalledTimes(1);121 });122 it('will only call onSubmit when the form is valid', async () => {123 const onSubmit = jest.fn();124 const { result, waitForNextUpdate } = renderHook(() =>125 useForm({126 onSubmit,127 validators: {128 email: () => 'false',129 },130 }),131 );132 act(() => {133 result.current.submit();134 });135 await waitForNextUpdate();136 expect(onSubmit).toBeCalledTimes(0);137 });138 });139 describe('with constraints', () => {140 it('will not set touch on inputs', async () => {141 const onSubmit = jest.fn();142 const { result, waitForNextUpdate } = renderHook(() =>143 useForm({144 onSubmit,145 constraints: {146 email: { type: 'email', required: true },147 },148 initialValues: {149 test: 'hello',150 },151 }),152 );153 act(() => {154 result.current.submit();155 });156 await waitForNextUpdate();157 expect(result.current.touches.test).toBeFalsy();158 });159 it('sets isDirty to true after submission of an optional form', async () => {160 const onSubmit = jest.fn();161 const { result, waitForNextUpdate } = renderHook(() =>162 useForm({163 onSubmit,164 constraints: {165 email: { type: 'email', required: false },166 },167 }),168 );169 act(() => {170 result.current.submit();171 });172 await waitForNextUpdate();173 expect(result.current.isDirty).toBe(true);174 });175 it('sets isDirty to true after submission of a form', async () => {176 const onSubmit = jest.fn();177 const { result, waitForNextUpdate } = renderHook(() =>178 useForm({179 onSubmit,180 constraints: {181 email: { type: 'email', required: true },182 },183 }),184 );185 act(() => {186 result.current.submit();187 });188 await waitForNextUpdate();189 expect(result.current.isDirty).toBe(true);190 });191 it('will call onSubmit when the form is optional', async () => {192 const onSubmit = jest.fn();193 const { result, waitForNextUpdate } = renderHook(() =>194 useForm({195 onSubmit,196 constraints: {197 email: { type: 'email', required: false },198 },199 }),200 );201 act(() => {202 result.current.submit();203 });204 await waitForNextUpdate();205 expect(onSubmit).toBeCalledTimes(1);206 });207 it('will only call onSubmit when the form is valid', async () => {208 const onSubmit = jest.fn();209 const { result, waitForNextUpdate } = renderHook(() =>210 useForm({211 onSubmit,212 constraints: {213 email: { type: 'email', required: true },214 },215 }),216 );217 act(() => {218 result.current.submit();219 });220 await waitForNextUpdate();221 expect(onSubmit).toBeCalledTimes(0);222 });223 it('will not reset form inputs when submission fails', async () => {224 const onSubmit = jest.fn().mockImplementation(() => {225 return sleep(1).then(() => {226 throw 'error';227 });228 });229 const { result, waitForNextUpdate } = renderHook(() =>230 useForm({231 onSubmit,232 constraints: {233 email: { type: 'email', required: true },234 },235 }),236 );237 act(() => {238 result.current.setValue('email', 'test@example.com');239 });240 act(() => {241 result.current.submit();242 });243 await waitForNextUpdate();244 expect(onSubmit).toBeCalledTimes(1);245 expect(result.current.values.email).toEqual('test@example.com');246 });247 it('supports email types', async () => {248 const { result, waitForNextUpdate } = renderHook(() =>249 useForm({250 onSubmit() {},251 constraints: {252 email: { type: 'email' },253 },254 }),255 );256 const subtest = async (value, shouldFail?) => {257 act(() => {258 result.current.validateByName('email', value);259 });260 await waitForNextUpdate();261 let exp = expect(result.current.errors.email);262 if (shouldFail) {263 // @ts-expect-error264 exp = exp.not;265 }266 exp.toEqual(SUCCESS);267 };268 await subtest('example.com', true);269 await subtest('e@example.com');270 await subtest('john.doe@example.uk.co');271 });272 });...

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useFetch.spec.js

Source:useFetch.spec.js Github

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...23 wrapper,24 initialProps: false25 }26 );27 await waitForNextUpdate();28 rerender({ foo: 'bar', bar: 'foo' });29 await waitForNextUpdate();30 await waitForNextUpdate();31 await waitForNextUpdate();32 expect(result.current).toEqual(33 expect.objectContaining({34 isFetching: false,35 data: { foo: 'bar', bar: 'foo' }36 })37 );38 });39});40it('awaits fetching when query is a function that throws', async () => {41 await act(async () => {42 const { result, waitForNextUpdate, rerender } = renderHook(43 query => useFetch(query),44 {45 wrapper,46 initialProps: () => ({ namespace: 'wc/v2', resource: Oops })47 }48 );49 await waitForNextUpdate();50 rerender(() => ({ namespace: 'wc/v2', resource: 'products' }));51 await waitForNextUpdate();52 await waitForNextUpdate();53 await waitForNextUpdate();54 expect(result.current).toEqual(55 expect.objectContaining({56 isFetching: false,57 data: { namespace: 'wc/v2', resource: 'products' }58 })59 );60 });61});62it('calls client.query with correct params', async () => {63 await act(async () => {64 const { result, waitForNextUpdate, rerender } = renderHook(65 query => useFetch(query),66 {67 wrapper,68 initialProps: { foo: 'bar', bar: 'foo' }69 }70 );71 await waitForNextUpdate();72 await waitForNextUpdate();73 await waitForNextUpdate();74 await waitForNextUpdate();75 expect(result.current.data).toEqual({ foo: 'bar', bar: 'foo' });76 });...

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Using AI Code Generation

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1import { renderHook, act } from "@testing-library/react-hooks";2import { useCounter } from "./useCounter";3test("should increment counter", async () => {4 const { result, waitForNextUpdate } = renderHook(() => useCounter());5 expect(result.current.count).toBe(0);6 act(() => {7 result.current.increment();8 });9 await waitForNextUpdate();10 expect(result.current.count).toBe(1);11});12import { renderHook, act } from "@testing-library/react-hooks";13import { useCounter } from "./useCounter";14test("should increment counter", async () => {15 const { result, waitForNextUpdate } = renderHook(() => useCounter());16 expect(result.current.count).toBe(0);17 act(() => {18 result.current.increment();19 });20 await waitForNextUpdate();21 expect(result.current.count).toBe(1);22});23import { renderHook, act } from "@testing-library/react-hooks";24import { useCounter } from "./useCounter";25test("should increment counter", async () => {26 const { result, waitForNextUpdate } = renderHook(() => useCounter());27 expect(result.current.count).toBe(0);28 act(() => {29 result.current.increment();30 });31 await waitForNextUpdate();32 expect(result.current.count).toBe(1);33});34import { renderHook, act } from "@testing-library/react-hooks";35import { useCounter } from "./useCounter";36test("should increment counter", async () => {37 const { result, waitForNextUpdate } = renderHook(() => useCounter());38 expect(result.current.count).toBe(0);39 act(() => {40 result.current.increment();41 });42 await waitForNextUpdate();43 expect(result.current.count).toBe(1);44});45import { renderHook, act } from "@testing-library/react-hooks";46import { useCounter } from "./useCounter";47test("should increment counter", async () => {48 const { result, waitForNextUpdate } = renderHook(() => useCounter());49 expect(result.current

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Using AI Code Generation

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1import { renderHook, act } from '@testing-library/react-hooks';2import { useFetch } from './useFetch';3test('should fetch data', async () => {4 const { result, waitForNextUpdate } = renderHook(() =>5 );6 expect(result.current.loading).toBe(true);7 expect(result.current.data).toBe(null);8 await waitForNextUpdate();9 expect(result.current.loading).toBe(false);10 expect(result.current.data).toEqual({11 });12});13import { useState, useEffect } from 'react';14export const useFetch = url => {15 const [data, setData] = useState(null);16 const [loading, setLoading] = useState(true);17 useEffect(() => {18 setLoading(true);19 setTimeout(async () => {20 const response = await fetch(url);21 const data = await response.json();22 setData(data);23 setLoading(false);24 }, 1000);25 }, [url]);26 return { data, loading };27};28import React from 'react';29import './App.css';30import { useFetch } from './useFetch';31function App() {32 const { data, loading } = useFetch(33 );34 return (35 <h1>{loading ? 'loading...' : data.title}</h1>36 );37}38export default App;

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Using AI Code Generation

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1import { renderHook } from '@testing-library/react-hooks';2import useFetch from './useFetch';3describe('useFetch', () => {4 it('should return the data', async () => {5 const { result, waitForNextUpdate } = renderHook(() => useFetch(url));6 await waitForNextUpdate();7 expect(result.current.data.title).toBe('delectus aut autem');8 });9});10import { useState, useEffect } from 'react';11const useFetch = (url) => {12 const [data, setData] = useState(null);13 const [isPending, setIsPending] = useState(true);14 const [error, setError] = useState(null);15 useEffect(() => {16 const abortCont = new AbortController();17 fetch(url, { signal: abortCont.signal })18 .then((res) => {19 if (!res.ok) {20 throw Error('could not fetch the data for that resource');21 }22 return res.json();23 })24 .then((data) => {25 setData(data);26 setIsPending(false);27 setError(null);28 })29 .catch((err) => {30 if (err.name === 'AbortError') {31 console.log('fetch aborted');32 } else {33 setIsPending(false);34 setError(err.message);35 }36 });37 return () => abortCont.abort();38 }, [url]);39 return { data, isPending, error };40};41export default useFetch;

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Using AI Code Generation

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1import { renderHook, act } from "@testing-library/react-hooks";2import useFetch from "../hooks/useFetch";3import { waitForNextUpdate } from "@testing-library/react";4test("it should fetch data", async () => {5 const { result, waitForNextUpdate } = renderHook(() => useFetch());6 await waitForNextUpdate();7 expect(result.current).toEqual({ data: "hello world" });8});9import { useState, useEffect } from "react";10const useFetch = () => {11 const [data, setData] = useState(null);12 useEffect(() => {13 setData("hello world");14 }, []);15 return data;16};17export default useFetch;18import { renderHook, act } from "@testing-library/react-hooks";19import useFetch from "./useFetch";20test("it should fetch data", () => {21 const { result } = renderHook(() => useFetch());22 expect(result.current).toEqual({ data: "hello world" });23});

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Using AI Code Generation

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1import { renderHook, act } from '@testing-library/react-hooks';2import useFetch from './useFetch';3describe('useFetch', () => {4 it('should return data', async () => {5 await waitForNextUpdate();6 expect(result.current.data).toEqual({ userId: 1, id: 1, title: 'delectus aut autem', completed: false });7 });8});9import { useState, useEffect } from 'react';10const useFetch = (url) => {11 const [data, setData] = useState(null);12 const [loading, setLoading] = useState(true);13 const [error, setError] = useState(null);14 useEffect(() => {15 const abortCont = new AbortController();16 fetch(url, { signal: abortCont.signal })17 .then((res) => {18 if (!res.ok) {19 throw Error('could not fetch data for that resource');20 }21 return res.json();22 })23 .then((data) => {24 setData(data);25 setLoading(false);26 setError(null);27 })28 .catch((err) => {29 if (err.name === 'AbortError') {30 console.log('fetch aborted');31 } else {32 setLoading(false);33 setError(err.message);34 }35 });36 return () => abortCont.abort();37 }, [url]);38 return { data, loading, error };39};40export default useFetch;41I have a custom hook called useFetch which returns an object {data, loading, error}

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