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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

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  });...

autoDetectRenderer.test.ts

Source:autoDetectRenderer.test.ts

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  })...

Using AI Code Generation

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});

Using AI Code Generation

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});

Using AI Code Generation

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

Using AI Code Generation

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>

Using AI Code Generation

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 })

Using AI Code Generation

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}

Using AI Code Generation

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};

Using AI Code Generation

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": {

Using AI Code Generation

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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