Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use contextA method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

withContext.spec.js

Source:withContext.spec.js

1import React, { Component, PureComponent } from 'react'2import PropTypes from 'prop-types'3import renderer from 'react-test-renderer'4import { createSelector, createStructuredSelector } from 'reselect'5import Enzyme, { mount } from 'enzyme'6import Adapter from 'enzyme-adapter-react-16'7import withContext from '../withContext'8Enzyme.configure({ adapter: new Adapter() })9function setup(propOverrides = {}) {10  const ref = React.createRef()11  const props = {12    ref,13    c: 3,14    ...propOverrides15  }16  class SomeComponent extends Component {17    static propTypes = {18      a: PropTypes.number.isRequired, // injected from ContextA19      b: PropTypes.number.isRequired, // injected from ContextB20      c: PropTypes.number.isRequired21    }22    render() {23      const { a, b, c } = this.props24      return [25        <div key="a" id="context-a">26          {a}27        </div>,28        <div key="b" id="context-b">29          {b}30        </div>,31        <div key="c" id="props-c">32          {c}33        </div>34      ]35    }36  }37  // The context will normally be exported elsewhere38  const ContextA = React.createContext()39  const ContextB = React.createContext()40  // this would normally look like41  //   export default withContext(...)(SomeComponent)42  const Consumer = withContext([ContextA, ContextB], function mapContextToProps(43    context44  ) {45    return context46  })(SomeComponent)47  const tree = renderer.create(48    <ContextA.Provider value={{ a: 1 }}>49      <ContextB.Provider value={{ b: 2 }}>50        <div className="stuff">some other content</div>51        <div className="nested element">52          <Consumer {...props} />53        </div>54      </ContextB.Provider>55    </ContextA.Provider>56  )57  return {58    props,59    SomeComponent,60    ContextA,61    ContextB,62    Consumer,63    tree64  }65}66describe('ContextConsumerHOC', () => {67  it('matches snapshot', () => {68    const { tree } = setup()69    expect(tree.toJSON()).toMatchSnapshot()70  })71  it('should forward the references', () => {72    const { SomeComponent, props } = setup()73    const { ref } = props74    expect(ref.current.constructor).toEqual(SomeComponent)75  })76  it('should pass ownProps to mapContextToProps', () => {77    const props = { b: 2 }78    const childContextA = { a: 1 }79    const ContextA = React.createContext(childContextA)80    const Consumer = withContext([ContextA], (context, ownProps) => {81      expect(ownProps).toEqual(props)82      return {}83    })((props) => <div {...props} />)84    const tree = renderer.create(85      <ContextA.Provider value={childContextA}>86        <Consumer {...props} />87      </ContextA.Provider>88    )89    expect(tree.toJSON()).toMatchSnapshot()90  })91  it('should not re-render PureComponents if props did not change', () => {92    const spy = jest.fn()93    const ContextA = React.createContext()94    const ContextB = React.createContext()95    class NakedPureComponent extends PureComponent {96      render() {97        spy() // should run once98        return <div />99      }100    }101    const Consumer = withContext(102      [ContextA, ContextB],103      function mapContextToProps(context) {104        return context105      }106    )(NakedPureComponent)107    class App extends Component {108      static propTypes = {109        b: PropTypes.number110      }111      constructor(props) {112        super(props)113        this.state = {114          childContextB: { b: props.b }115        }116        // Keep reference to sabe context object to prevent re-renders117        this.childContextA = { a: 1 } // a doesn't change in this example118      }119      render() {120        return (121          <ContextA.Provider value={this.childContextA}>122            <ContextB.Provider value={this.state.childContextB}>123              <div className="stuff">some other content</div>124              <div className="nested element">125                <Consumer />126              </div>127            </ContextB.Provider>128          </ContextA.Provider>129        )130      }131    }132    const wrapper = mount(<App b={2} />)133    wrapper.setState({ random: 1 })134    // evidently, it is called 1 times135    expect(spy).toHaveBeenCalledTimes(1)136    wrapper.setState({137      childContextB: {138        b: 22139      }140    })141    // called 2 times because there is an update in the PureComponent' props142    expect(spy).toHaveBeenCalledTimes(2)143  })144  it('allows creating namespace selectors for individual context', () => {145    const contextA = { a: 1 }146    const contextB = { b: 2 }147    const ContextA = React.createContext()148    const ContextB = React.createContext()149    function NakedComponent(props) {150      return <div className="component" {...props} />151    }152    const App = withContext([ContextA, ContextB], function mapContextToProps({153      a,154      b155    }) {156      return {157        awrap: { a }, // WARNING: this creates a new object, use some type of memoization158        b159      }160    })(NakedComponent)161    const wrapper = mount(162      <ContextA.Provider value={contextA}>163        <ContextB.Provider value={contextB}>164          <App />165        </ContextB.Provider>166      </ContextA.Provider>167    )168    const component = wrapper.find('.component')169    expect(component.prop('awrap')).toEqual(contextA)170    expect(component.prop('b')).toEqual(2)171  })172  it('allows using memoization with reselect', () => {173    const spy = jest.fn()174    // selectors175    const getA = (context) => context.a176    // simple example177    const contextA = { a: 1, b: 2, c: 3 }178    const ContextA = React.createContext(contextA)179    const NakedComponent = (props) => {180      spy(props)181      return <div className="component" {...props} />182    }183    const App = withContext([ContextA], function mapContextToProps(context) {184      return {185        a: getA(context)186      }187    })(NakedComponent)188    const wrapper = mount(189      <ContextA.Provider value={contextA}>190        <App />191      </ContextA.Provider>192    )193    const component = wrapper.find('.component')194    expect(component.prop('a')).toEqual(contextA.a)195    expect(component.prop('b')).toBeUndefined()196    expect(component.prop('c')).toBeUndefined()197    expect(spy).toHaveBeenCalledWith({ a: 1 })198  })199  it('allows using memoization with reselect 2 (test using PureComponent)', () => {200    const spy = jest.fn()201    // selectors202    const getB = (context) => context.b203    const getC = (context) => context.c204    const getD = createSelector([getB, getC], (b, c) => b + c)205    // simple example206    const contextA = { a: 1, b: 2, c: 3 }207    const ContextA = React.createContext(contextA)208    // Because naked component doesn't care about prop 'c',209    // it only renders if 'a' or 'b' change, as expected.210    class NakedComponent extends PureComponent {211      render() {212        spy(this.props)213        return <div className="component" {...this.props} />214      }215    }216    const App = withContext([ContextA], function mapContextToProps(context) {217      return {218        d: getD(context)219      }220    })(NakedComponent)221    const Root = (props) => (222      <ContextA.Provider value={{ ...contextA, ...props }}>223        <App />224      </ContextA.Provider>225    )226    const wrapper = mount(<Root c={3} />)227    wrapper.setProps({ a: 2 })228    const component = wrapper.find('.component')229    expect(component.prop('a')).toBeUndefined()230    expect(component.prop('b')).toBeUndefined()231    expect(component.prop('c')).toBeUndefined()232    expect(component.prop('d')).toEqual(contextA.b + contextA.c)233    expect(spy).toHaveBeenCalledWith({ d: contextA.b + contextA.c })234    expect(spy).toHaveBeenCalledTimes(1)235  })236  it('allows using memoization with reselect 3 (namespaces with createStructuredSelector)', () => {237    const spy = jest.fn()238    // selectors239    const getB = (context) => context.b240    const getC = (context) => context.c241    const getD = createSelector([getB, getC], (b, c) => b + c)242    // simple example243    const contextA = { a: 1, b: 2, c: 3 }244    const ContextA = React.createContext(contextA)245    // Because naked component doesn't care about prop 'c',246    // it only renders if 'a' or 'b' change, as expected.247    class NakedComponent extends PureComponent {248      render() {249        spy(this.props)250        return <div className="component" {...this.props} />251      }252    }253    const App = withContext(254      [ContextA],255      createStructuredSelector({256        context: createStructuredSelector({257          d: getD258        })259      })260    )(NakedComponent)261    const Root = (props) => (262      <ContextA.Provider value={{ ...contextA, ...props }}>263        <App />264      </ContextA.Provider>265    )266    const wrapper = mount(<Root c={3} />)267    wrapper.setProps({ a: 2 })268    const component = wrapper.find('.component')269    expect(component.prop('context').a).toBeUndefined()270    expect(component.prop('context').b).toBeUndefined()271    expect(component.prop('context').c).toBeUndefined()272    expect(component.prop('context').d).toEqual(contextA.b + contextA.c)273    expect(spy).toHaveBeenCalledWith({274      context: { d: contextA.b + contextA.c }275    })276    expect(spy).toHaveBeenCalledTimes(1)277  })...

reducers.js

Source:reducers.js

1/**2 * External dependencies3 */4import deepFreeze from 'deep-freeze';5/**6 * Internal dependencies7 */8import queryStateReducer from '../reducers';9import { setQueryValue, setValueForQueryContext } from '../actions';10describe( 'queryStateReducer', () => {11	const originalState = deepFreeze( {12		contexta: JSON.stringify( {13			foo: 'bar',14			cheese: 'pizza',15		} ),16	} );17	it(18		'returns original state when the action is not of the type being ' +19			'processed',20		() => {21			expect(22				queryStateReducer( originalState, { type: 'invalid' } )23			).toBe( originalState );24		}25	);26	describe( 'SET_QUERY_KEY_VALUE action', () => {27		it(28			'returns original state when incoming query-state key value ' +29				'matches what is already in the state',30			() => {31				expect(32					queryStateReducer(33						originalState,34						setQueryValue( 'contexta', 'foo', 'bar' )35					)36				).toBe( originalState );37			}38		);39		it(40			'returns new state when incoming query-state key exist ' +41				'but the value is a new value',42			() => {43				const newState = queryStateReducer(44					originalState,45					setQueryValue( 'contexta', 'foo', 'zed' )46				);47				expect( newState ).not.toBe( originalState );48				expect( newState ).toEqual( {49					contexta: JSON.stringify( {50						foo: 'zed',51						cheese: 'pizza',52					} ),53				} );54			}55		);56		it(57			'returns new state when incoming query-state key does not ' +58				'exist',59			() => {60				const newState = queryStateReducer(61					originalState,62					setQueryValue( 'contexta', 'burger', 'pizza' )63				);64				expect( newState ).not.toBe( originalState );65				expect( newState ).toEqual( {66					contexta: JSON.stringify( {67						foo: 'bar',68						cheese: 'pizza',69						burger: 'pizza',70					} ),71				} );72			}73		);74	} );75	describe( 'SET_QUERY_CONTEXT_VALUE action', () => {76		it(77			'returns original state when incoming context value matches ' +78				'what is already in the state',79			() => {80				expect(81					queryStateReducer(82						originalState,83						setValueForQueryContext( 'contexta', {84							foo: 'bar',85							cheese: 'pizza',86						} )87					)88				).toBe( originalState );89			}90		);91		it(92			'returns new state when incoming context value is different ' +93				'than what is already in the state',94			() => {95				const newState = queryStateReducer(96					originalState,97					setValueForQueryContext( 'contexta', {98						bar: 'foo',99						pizza: 'cheese',100					} )101				);102				expect( newState ).not.toBe( originalState );103				expect( newState ).toEqual( {104					contexta: JSON.stringify( {105						bar: 'foo',106						pizza: 'cheese',107					} ),108				} );109			}110		);111		it(112			'returns new state when incoming context does not exist in the ' +113				'state',114			() => {115				const newState = queryStateReducer(116					originalState,117					setValueForQueryContext( 'contextb', {118						foo: 'bar',119					} )120				);121				expect( newState ).not.toBe( originalState );122				expect( newState ).toEqual( {123					contexta: JSON.stringify( {124						foo: 'bar',125						cheese: 'pizza',126					} ),127					contextb: JSON.stringify( {128						foo: 'bar',129					} ),130				} );131			}132		);133	} );...

Using AI Code Generation

1const contextA = require('fast-check-monorepo/contextA');2contextA();3const contextB = require('fast-check-monorepo/contextB');4contextB();5const contextA = require('fast-check-monorepo/contextA');6contextA();7const contextB = require('fast-check-monorepo/contextB');8contextB();9const contextA = require('fast-check-monorepo/contextA');10contextA();11const contextB = require('fast-check-monorepo/contextB');12contextB();13const contextA = require('fast-check-monorepo/contextA');14contextA();15const contextB = require('fast-check-monorepo/contextB');16contextB();17const contextA = require('fast-check-monorepo/contextA');18contextA();19const contextB = require('fast-check-mon

Using AI Code Generation

1import { contextA } from 'fast-check-monorepo';2contextA();3import { contextB } from 'fast-check-monorepo';4contextB();5import { contextA } from 'fast-check-monorepo';6contextA();7import { contextB } from 'fast-check-monorepo';8contextB();9      at Resolver.resolveModule (node_modules/jest-resolve/build/inde

Using AI Code Generation

1import { contextA } from 'fast-check-monorepo';2import { contextB } from 'fast-check-monorepo';3import { contextC } from 'fast-check-monorepo';4import { contextD } from 'fast-check-monorepo';5import { contextE } from 'fast-check-monorepo';6import { contextF } from 'fast-check-monorepo';7import { contextG } from 'fast-check-monorepo';8import { contextH } from 'fast-check-monorepo';9import { contextI } from 'fast-check-monorepo';10import { contextJ } from 'fast-check-monorepo';11import { contextK } from 'fast-check-monorepo';12import { contextL } from 'fast-check-monorepo';13import { contextM } from 'fast-check-monorepo';14import { contextN } from 'fast-check-monorepo';15import { contextO } from 'fast-check-monorepo';16import { contextP } from 'fast-check-monorepo';17import { contextQ } from 'fast-check-monorepo';18import { contextR } from 'fast-check-monorepo';19import { contextS } from 'fast-check-monorepo

Using AI Code Generation

1const contextA = require(‘fast-check-monorepo/contextA’);2contextA();3const contextB = require(‘fast-check-monorepo/contextB’);4contextB();5const contextA = require(‘fast-check-monorepo/contextA’);6contextA();7const contextB = require(‘fast-check-monorepo/contextB’);8contextB();

Using AI Code Generation

1const { contextA } = require('@fast-check/contextA')2const { contextB } = require('@fast-check/contextB')3contextA()4contextB()5{6  "scripts": {7  },8  "dependencies": {9  }10}11const { contextA } = require('@fast-check/contextA')12const { contextB } = require('@fast-check/contextB')13const { beforeAll, afterAll, test } = require('jest-circus')14beforeAll(() => {15  const { currentTest } = require('jest-circus/build/state')16  currentTest.context = {17  }18})19afterAll(() => {20  const { currentTest } = require('jest-circus/build/state')21})22test('test', () => {23  const { currentTest } = require('jest-circus/build/state')24  currentTest.context.contextA()25  currentTest.context.contextB()26})

Using AI Code Generation

1const contextA = require('fast-check-monorepo/contextA');2const contextB = require('fast-check-monorepo/contextB');3const contextC = require('fast-check-monorepo/contextC');4contextA.method();5contextB.method();6contextC.method();7const ContextA = require('./src/ContextA');8let instance = null;9module.exports = () => {10  if (instance === null) {11    instance = new ContextA();12  }13  return instance;14};15const ContextB = require('./src/ContextB');16let instance = null;

Using AI Code Generation

1const contextA = require('fast-check-monorepo');2contextA.methodA();3module.exports = {4  methodA: () => {5    console.log('methodA');6  },7};8const contextA = require('fast-check-monorepo');9const a = new contextA.ClassA();10a.methodA();11class ClassA {12  methodA() {13    console.log('methodA');14  }15}16module.exports = {17};18const contextA = require('fast-check-monorepo');19const a = new contextA.ClassA();20a.methodA = () => {21  console.log('mocked methodA');22};23a.methodA();24class ClassA {25  methodA() {26    console.log('methodA');27  }28}29module.exports = {30};31const contextA = require('fast-check-monorepo');32const a = new contextA.ClassA();33a.methodB = () => {34  console.log('mocked methodB');35};36a.methodB();37class ClassA {38  methodB() {39    console.log('methodB');40  }41}42module.exports = {43};

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.