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

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

_tsvb_markdown.ts

Source: _tsvb_markdown.ts Github

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1/​*2 * Licensed to Elasticsearch B.V. under one or more contributor3 * license agreements. See the NOTICE file distributed with4 * this work for additional information regarding copyright5 * ownership. Elasticsearch B.V. licenses this file to you under6 * the Apache License, Version 2.0 (the "License"); you may7 * not use this file except in compliance with the License.8 * You may obtain a copy of the License at9 *10 * http:/​/​www.apache.org/​licenses/​LICENSE-2.011 *12 * Unless required by applicable law or agreed to in writing,13 * software distributed under the License is distributed on an14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY15 * KIND, either express or implied. See the License for the16 * specific language governing permissions and limitations17 * under the License.18 */​19import expect from '@kbn/​expect';20import { FtrProviderContext } from '../​../​ftr_provider_context';21/​/​ tslint:disable-next-line:no-default-export22export default function({ getPageObjects }: FtrProviderContext) {23 const { visualBuilder, timePicker } = getPageObjects([24 'visualBuilder',25 'timePicker',26 'visualize',27 ]);28 describe('visual builder', function describeIndexTests() {29 describe('markdown', () => {30 before(async () => {31 await visualBuilder.resetPage();32 await visualBuilder.clickMarkdown();33 await timePicker.setAbsoluteRange('2015-09-22 06:00:00.000', '2015-09-22 11:00:00.000');34 });35 it('should render subtabs and table variables markdown components', async () => {36 const tabs = await visualBuilder.getSubTabs();37 expect(tabs).to.have.length(3);38 const variables = await visualBuilder.getMarkdownTableVariables();39 expect(variables).not.to.be.empty();40 expect(variables).to.have.length(5);41 });42 it('should allow printing raw timestamp of data', async () => {43 await visualBuilder.enterMarkdown('{{ count.data.raw.[0].[0] }}');44 const text = await visualBuilder.getMarkdownText();45 expect(text).to.be('1442901600000');46 });47 it('should allow printing raw value of data', async () => {48 await visualBuilder.enterMarkdown('{{ count.data.raw.[0].[1] }}');49 const text = await visualBuilder.getMarkdownText();50 expect(text).to.be('6');51 });52 it('should render html as plain text', async () => {53 const html = '<h1>hello world</​h1>';54 await visualBuilder.enterMarkdown(html);55 const markdownText = await visualBuilder.getMarkdownText();56 expect(markdownText).to.be(html);57 });58 it('should render mustache list', async () => {59 const list = '{{#each _all}}\n{{ data.formatted.[0] }} {{ data.raw.[0] }}\n{{/​each}}';60 const expectedRenderer = 'Sep 22, 2015 @ 06:00:00.000,6 1442901600000,6';61 await visualBuilder.enterMarkdown(list);62 const markdownText = await visualBuilder.getMarkdownText();63 expect(markdownText).to.be(expectedRenderer);64 });65 });66 });...

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autoDetectRenderer.test.ts

Source: autoDetectRenderer.test.ts Github

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1/​* eslint-disable @typescript-eslint/​no-var-requires */​2import { ReactHooksRenderer } from '../​types/​react'3describe('auto-detect renderer', () => {4 function setUpDependencies({5 reactTestRenderer,6 reactDom7 }: {8 reactTestRenderer?: boolean9 reactDom?: boolean10 }) {11 jest.resetModules()12 jest.unmock('react-test-renderer')13 jest.unmock('react-dom')14 if (!reactTestRenderer) {15 jest.doMock('react-test-renderer', () => require('missing-dependency'))16 }17 if (!reactDom) {18 jest.doMock('react-dom', () => require('missing-dependency'))19 }20 }21 runForLazyRenderers(['default', 'default/​pure'], (getRenderer, rendererName) => {22 describe('react-test-renderer available', () => {23 setUpDependencies({ reactTestRenderer: true, reactDom: true })24 const actualRenderer = getRenderer()25 const expectedRenderer = require(rendererName.includes('pure')26 ? '../​native/​pure'27 : '../​native') as ReactHooksRenderer28 test('should resolve native renderer as default renderer', () => {29 expect(actualRenderer).toEqual(expectedRenderer)30 })31 })32 describe('react-dom available', () => {33 setUpDependencies({ reactTestRenderer: false, reactDom: true })34 const actualRenderer = getRenderer()35 const expectedRenderer = require(rendererName.includes('pure')36 ? '../​dom/​pure'37 : '../​dom') as ReactHooksRenderer38 test('should resolve dom renderer as default renderer', () => {39 expect(actualRenderer).toEqual(expectedRenderer)40 })41 })42 describe('no renderers available', () => {43 setUpDependencies({ reactTestRenderer: false, reactDom: false })44 test('should throw error if a default renderer cannot be resolved', () => {45 jest.doMock('react-test-renderer', () => {46 throw new Error('missing dependency')47 })48 jest.doMock('react-dom', () => {49 throw new Error('missing dependency')50 })51 const expectedMessage =52 "Could not auto-detect a React renderer. Are you sure you've installed one of the following\n - react-dom\n - react-test-renderer\nIf you are using a bundler, please update your imports to use a specific renderer.\nFor instructions see: https:/​/​react-hooks-testing-library.com/​installation#being-specific"53 expect(() => getRenderer()).toThrowError(new Error(expectedMessage))54 })55 })56 })...

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Using AI Code Generation

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1import { renderHook } from '@testing-library/​react-hooks';2import { useCounter } from './​useCounter';3describe('useCounter', () => {4 it('should increment counter', () => {5 const { result } = renderHook(() => useCounter());6 expect(result.current.count).toBe(0);7 act(() => {8 result.current.increment();9 });10 expect(result.current.count).toBe(1);11 act(() => {12 result.current.decrement();13 });14 expect(result.current.count).toBe(0);15 });16});17import { useState } from 'react';18export const useCounter = () => {19 const [count, setCount] = useState(0);20 const increment = () => {21 setCount(prevCount => prevCount + 1);22 };23 const decrement = () => {24 setCount(prevCount => prevCount - 1);25 };26 return { count, increment, decrement };27};28import React from 'react';29import { useCounter } from './​useCounter';30export const App = () => {31 const { count, increment, decrement } = useCounter();32 return (33 <div data-testid="count">{count}</​div>34 <button data-testid="increment" onClick={increment}>35 <button data-testid="decrement" onClick={decrement}>36 );37};38import React from 'react';39import { render, screen } from '@testing-library/​react';40import { App } from './​App';41describe('App', () => {42 it('should render initial count', () => {43 render(<App /​>);44 expect(screen.getByTestId('count')).toHaveTextContent('0');45 fireEvent.click(screen.getByTestId('increment'));46 expect(screen.getByTestId('count')).toHaveTextContent('1');47 fireEvent.click(screen.getByTestId('decrement'));48 expect(screen.getByTestId('count')).toHaveTextContent('0');49 });50});

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Using AI Code Generation

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1import { renderHook } from '@testing-library/​react-hooks';2import { useCounter } from './​useCounter';3describe('useCounter', () => {4 it('should increment the counter', () => {5 const { result } = renderHook(() => useCounter());6 expect(result.current.count).toBe(0);7 act(() => {8 result.current.increment();9 });10 expect(result.current.count).toBe(1);11 });12});13import { renderHook } from '@testing-library/​react-hooks';14import { useCounter } from './​useCounter';15describe('useCounter', () => {16 it('should increment the counter', () => {17 const { result } = renderHook(() => useCounter());18 expect(result.current.count).toBe(0);19 act(() => {20 result.current.increment();21 });22 expect(result.current.count).toBe(1);23 });24});25import { useState, useCallback } from 'react';26export const useCounter = () => {27 const [count, setCount] = useState(0);28 const increment = useCallback(() => setCount(c => c + 1), []);29 return { count, increment };30};31import { renderHook } from '@testing-library/​react-hooks';32import { useCounter } from './​useCounter';33jest.mock('react', () => ({34 ...jest.requireActual('react'),35 useReducer: jest.fn()36}));37describe('useCounter', () => {38 it('should increment the counter', () => {39 const { result } = renderHook(() => useCounter());40 expect(result.current.count).toBe(0);41 act(() => {42 result.current.increment();43 });44 expect(result.current.count).toBe(1);45 });46});

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Using AI Code Generation

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1import { renderHook } from '@testing-library/​react-hooks'2import { useCounter } from './​useCounter'3describe('useCounter', () => {4 it('should increment the count', () => {5 const { result } = renderHook(() => useCounter())6 expect(result.current.count).toBe(0)7 act(() => {8 result.current.increment()9 })10 expect(result.current.count).toBe(1)11 })12 it('should decrement the count', () => {13 const { result } = renderHook(() => useCounter())14 expect(result.current.count).toBe(0)15 act(() => {16 result.current.decrement()17 })18 expect(result.current.count).toBe(-1)19 })20})21export function useCounter() {22 const [count, setCount] = useState(0)23 const increment = () => setCount(count + 1)24 const decrement = () => setCount(count - 1)25 return {26 }27}28import { renderHook } from '@testing-library/​react-hooks'29import { useCounter } from './​useCounter'30describe('useCounter', () => {31 it('should increment the count', () => {32 const { result } = renderHook(() => useCounter())33 expect(result.current.count).toBe(0)34 act(() => {35 result.current.increment()36 })37 expect(result.current.count

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Using AI Code Generation

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1import { renderHook } from '@testing-library/​react-hooks';2import { useCounter } from './​useCounter';3describe('useCounter', () => {4 it('should use the default value', () => {5 const { result } = renderHook(() => useCounter());6 expect(result.current.count).toBe(0);7 });8 it('should increment the counter', () => {9 const { result } = renderHook(() => useCounter());10 result.current.increment();11 expect(result.current.count).toBe(1);12 });13 it('should decrement the counter', () => {14 const { result } = renderHook(() => useCounter());15 result.current.decrement();16 expect(result.current.count).toBe(-1);17 });18 it('should increment the counter by the specified amount', () => {19 const { result } = renderHook(() => useCounter());20 result.current.incrementBy(2);21 expect(result.current.count).toBe(2);22 });23 it('should decrement the counter by the specified amount', () => {24 const { result } = renderHook(() => useCounter());25 result.current.decrementBy(2);26 expect(result.current.count).toBe(-2);27 });28});29import { useState } from 'react';30export const useCounter = (initialValue = 0) => {31 const [count, setCount] = useState(initialValue);32 const increment = () => setCount(count + 1);33 const decrement = () => setCount(count - 1);34 const incrementBy = (amount) => setCount(count + amount);35 const decrementBy = (amount) => setCount(count - amount);36 return {37 };38};39import React from 'react';40import { useCounter } from './​useCounter';41function App() {42 const { count, increment, decrement, incrementBy, decrementBy } = useCounter();43 return (44 <h1>Count: {count}</​h1>45 <button onClick={increment}>Increment</​button>46 <button onClick={decrement}>Decrement</​button>47 <button onClick={() => incrementBy(5)}>Increment by 5</​button>48 <button onClick={() => decrementBy(5)}>Decrement by 5</​button>

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Using AI Code Generation

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1import { renderHook } from '@testing-library/​react-hooks'2import { useFetch } from './​useFetch'3const { data, loading, error } = result.current4console.log(data, loading, error)5import { renderHook } from '@testing-library/​react-hooks'6import { useFetch } from './​useFetch'7const { result, waitForNextUpdate } = renderHook(() =>8const { data, loading, error } = result.current9console.log(data, loading, error)10await waitForNextUpdate()11import { renderHook } from '@testing-library/​react-hooks'12import { useFetch } from './​useFetch'13const { result, waitForNextUpdate } = renderHook(() =>14const { data, loading, error } = result.current15console.log(data, loading, error)16await waitForNextUpdate({ timeout: 2000 })17import { renderHook } from '@testing-library/​react-hooks'18import { useFetch } from './​useFetch'19const { result, waitForNextUpdate } = renderHook(() =>20const { data, loading, error } = result.current21console.log(data, loading, error)22await waitForNextUpdate({ timeout: 2000 })23await waitForNextUpdate({ timeout: 2000 })24import { renderHook } from '@testing-library/​react-hooks'25import { useFetch } from './​useFetch'26const { result, waitForNextUpdate } = renderHook(() =>27const { data, loading, error } = result.current28console.log(data, loading, error)29await waitForNextUpdate({ timeout: 2000 })30await waitForNextUpdate({ timeout: 2000 })31await waitForNextUpdate({ timeout: 2000 })

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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('useCounter', () => {4 const {result} = renderHook(() => useCounter())5 expect(count).toBe(0)6 act(() => inc())7 expect(count).toBe(1)8 act(() => dec())9 expect(count).toBe(0)10})11import {useState} from 'react'12export function useCounter() {13 const [count, setCount] = useState(0)14 const inc = () => setCount(c => c + 1)15 const dec = () => setCount(c => c - 1)16}17import React from 'react'18import {useCounter} from './​useCounter'19function App() {20 const [count, inc, dec] = useCounter()21 return (22 <h1>{count}</​h1>23 <button onClick={inc}>Increment</​button>24 <button onClick={dec}>Decrement</​button>25}

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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 data', async () => {5 const { result, waitForNextUpdate } = renderHook(() =>6 );7 await waitForNextUpdate();8 expect(result.current.data).toEqual({9 });10 });11});12import { useState, useEffect } from 'react';13export const useFetch = (url) => {14 const [data, setData] = useState(null);15 const [error, setError] = useState(null);16 useEffect(() => {17 const fetchData = async () => {18 try {19 const response = await fetch(url);20 const json = await response.json();21 setData(json);22 } catch (error) {23 setError(error);24 }25 };26 fetchData();27 }, [url]);28 return { data, error };29};

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Using AI Code Generation

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1import { renderHook } from '@testing-library/​react-hooks';2import { useCounter } from './​useCounter';3describe('useCounter', () => {4 test('should increment the counter', () => {5 const { result } = renderHook(() => useCounter());6 const { increment } = result.current;7 act(() => {8 increment();9 });10 const { count } = result.current;11 expect(count).toBe(1);12 });13});14import { useState } from 'react';15export const useCounter = () => {16 const [count, setCount] = useState(0);17 const increment = () => {18 setCount(count + 1);19 };20 return { count, increment };21};22import React from 'react';23import { useCounter } from './​useCounter';24export const App = () => {25 const { count, increment } = useCounter();26 return (27 <p>Count: {count}</​p>28 <button onClick={increment}>Increment</​button>29 );30};31import React from 'react';32import ReactDOM from 'react-dom';33import { App } from './​App';34ReactDOM.render(<App /​>, document.getElementById('root'));35{36 "dependencies": {37 },38 "scripts": {39 },40 "eslintConfig": {41 },42 "browserslist": {

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Using AI Code Generation

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1const { expectedRenderer } = require('./​test2');2const { renderHook } = require('@testing-library/​react-hooks');3describe('testing-library-react-hooks', () => {4 it('should render', () => {5 const { result } = renderHook(() => expectedRenderer());6 expect(result.current).toEqual('Hello World');7 });8});9const { useMyHook } = require('./​test3');10const { act, renderHook } = require('@testing-library/​react-hooks');11describe('testing-library-react-hooks', () => {12 it('should render', () => {13 const { result } = renderHook(() => useMyHook());14 expect(result.current).toEqual('Hello World');15 });16});17const { useMyHook } = require('./​test4');18const { act, renderHook } = require('@testing-library/​react-hooks');19describe('testing-library-react-hooks', () => {20 it('should render', () => {21 const { result } = renderHook(() => useMyHook());22 expect(result.current).toEqual('Hello World');23 });24});25const { useMyHook } = require('./​test5');26const { act, renderHook } = require('@testing-library/​react-hooks');27describe('testing-library-react-hooks', () => {28 it('should render', () => {29 const { result } = renderHook(() => useMyHook());30 expect(result.current).toEqual('Hello World');31 });32});33const { useMyHook } = require('./​test6');34const { act, renderHook } = require('@testing-library/​react-hooks');35describe('testing-library-react-hooks', () => {36 it('should render', () => {37 const { result } = renderHook(() => useMyHook());38 expect(result.current).toEqual('Hello World');39 });40});41const { useMyHook } = require('./​test7');42const { act, renderHook } = require('@testing-library/​react-hooks');43describe('testing-library-react-hooks

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