How to use callbackValue2 method in testing-library-react-hooks

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

Publisher.js

Source: Publisher.js Github

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1/​/​We do not want extra logs in console, because jasmine will tell us everything by itself2GRASP.errorHandler.setQuietMode(true);3describe("Publisher.when", function () {4 beforeEach(function(){5 this.mediator = new GRASP.Mediator();6 this.event1 = new GRASP.Event("event1", {});7 this.event2 = new GRASP.Event("event2", {});8 this.event3 = new GRASP.Event("event3", {});9 this.listeners = [Object.create(GRASP.iListener), Object.create(GRASP.iListener), Object.create(GRASP.iListener), Object.create(GRASP.iListener)];10 this.mediator.addListener('event1', this.listeners[0]);11 this.mediator.addListener('event2', this.listeners[1]);12 this.mediator.addListener('event3', this.listeners[2]);13 this.mediator.addListener('event1', this.listeners[3]);14 var promise = new GRASP.Promise(jQuery);15 this.publisher = new GRASP.Publisher(this.mediator, promise);16 });17 it("should execute planned events sequentially, one by one", function () {18 var that = this;19 /​* PREPARE */​20 /​/​ create listeners21 this.listeners[0].eventListener = function (event) {22 setTimeout(function(){event.setResponse(event.getData() + ' listener1Data')}, 100);23 };24 this.listeners[1].eventListener = function (event) {25 setTimeout(function(){event.setResponse(event.getData() + ' listener2Data')}, 100);26 };27 /​* TEST LOGIC */​28 /​/​ schedule successive events29 var callbackValue1 = null;30 var callbackValue2 = null;31 var event1 = this.publisher.createEvent('event1');32 this.publisher.when(event1).then(function(data){33 callbackValue1 = 'a ' + data;34 return that.publisher.publish('event2', callbackValue1);35 }).then(function(data){36 callbackValue2 = 'b ' + data;37 });38 this.publisher.publishEvent(event1);39 /​* VERIFICATION */​40 /​/​ event1 setResponse must be called after 100, event2 after 100 after that, so41 /​/​ after 100 that must be still callbackValue1 = null and callbackValue2 = null42 waits(10);43 runs(function(){44 expect(callbackValue1).toEqual(null);45 expect(callbackValue2).toEqual(null);46 });47 /​/​ after 110 that must be callbackValue1 = 'a listener1Data' and callbackValue2 = null48 waits(100);49 runs(function(){50 expect(callbackValue1).toEqual('a undefined listener1Data');51 expect(callbackValue2).toEqual(null);52 });53 /​/​ after 210 that must be still callbackValue1 = 'a listener1Data' and callbackValue2 = 'b listener1Data'54 waits(100);55 runs(function(){56 expect(callbackValue1).toEqual('a undefined listener1Data');57 expect(callbackValue2).toEqual('b a undefined listener1Data listener2Data');58 });59 });60 it("should work correct if the event setResponse happens immediately", function () {61 var that = this;62 /​* PREPARE */​63 /​/​ create listeners64 this.listeners[0].eventListener = function (event) {65 event.setResponse(event.getData() + ' listener1Data');66 };67 this.listeners[1].eventListener = function (event) {68 setTimeout(function(){event.setResponse(event.getData() + ' listener2Data')}, 100);69 };70 /​* TEST LOGIC */​71 /​/​ schedule successive events72 var callbackValue1 = null;73 var callbackValue2 = null;74 var event1 = this.publisher.createEvent('event1');75 this.publisher.when(event1).then(function(data){76 callbackValue1 = 'a ' + data;77 return that.publisher.publish('event2', callbackValue1);78 }).then(function(data){79 callbackValue2 = 'b ' + data;80 });81 this.publisher.publishEvent(event1);82 /​* VERIFICATION */​83 /​/​ event1 setResponse was called immediately, so84 /​/​ here we already have callbackValue1 = 'a undefined listener1Data' and callbackValue2 = null85 expect(callbackValue1).toEqual('a undefined listener1Data');86 expect(callbackValue2).toEqual(null);87 waits(110);88 /​/​ after 110 that must be callbackValue1 = 'a undefined listener1Data' and callbackValue2 = 'b a undefined listener1Data listener2Data'89 runs(function(){90 expect(callbackValue1).toEqual('a undefined listener1Data');91 expect(callbackValue2).toEqual('b a undefined listener1Data listener2Data');92 });93 });94 it("should work correct if listener is using publisher.when too", function () {95 var that = this;96 /​* PREPARE */​97 /​/​ create listeners98 this.listeners[0].eventListener = function (event) {99 setTimeout(function(){100 var event3 = that.publisher.createEvent('event3');101 that.publisher.when(event3).then(function(data){102 event.setResponse(data + ' listener1Data');103 });104 that.publisher.publishEvent(event3);105 }, 100);106 };107 this.listeners[1].eventListener = function (event) {108 setTimeout(function(){event.setResponse(event.getData() + ' listener2Data')}, 100);109 };110 this.listeners[2].eventListener = function (event) {111 setTimeout(function(){event.setResponse(event.getData() + ' listener3Data')}, 100);112 };113 /​* TEST LOGIC */​114 /​/​ schedule successive events115 var callbackValue1 = null;116 var callbackValue2 = null;117 var event1 = this.publisher.createEvent('event1');118 this.publisher.when(event1).then(function(data){119 callbackValue1 = 'a ' + data;120 return that.publisher.publish('event2', callbackValue1);121 }).then(function(data){122 callbackValue2 = 'b ' + data;123 });124 this.publisher.publishEvent(event1);125 /​* VERIFICATION */​126 /​/​ event1 setResponse must be called after 100, event2 after 100 after that, so127 /​/​ after 100 that must be still callbackValue1 = null and callbackValue2 = null128 waits(10);129 runs(function(){130 expect(callbackValue1).toEqual(null);131 expect(callbackValue2).toEqual(null);132 });133 /​/​ after 110 that must be still callbackValue1 = null and callbackValue2 = null134 waits(100);135 runs(function(){136 expect(callbackValue1).toEqual(null);137 expect(callbackValue2).toEqual(null);138 });139 /​/​ after 210 that must be still callbackValue1 = 'a undefined listener3Data listener1Data' and callbackValue2 = null140 waits(100);141 runs(function(){142 expect(callbackValue1).toEqual('a undefined listener3Data listener1Data');143 expect(callbackValue2).toEqual(null);144 });145 /​/​ after 310 that must be still callbackValue1 = 'a undefined listener3Data listener1Data' and callbackValue2 = 'b a undefined listener3Data listener1Data listener2Data'146 waits(100);147 runs(function(){148 expect(callbackValue1).toEqual('a undefined listener3Data listener1Data');149 expect(callbackValue2).toEqual('b a undefined listener3Data listener1Data listener2Data');150 });151 });...

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useMemo.test.js

Source: useMemo.test.js Github

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1import { useMemo, useCallback } from 'react';2import { renderHook, cleanup } from 'react-hooks-testing-library';3describe('useCallback test', () => {4 afterEach(cleanup);5 test('should handle useMemo hook', () => {6 const { result, rerender } = renderHook(7 ({ value }) => useMemo(() => ({ value }), [value]),8 {9 initialProps: { value: 1 }10 }11 );12 const value1 = result.current;13 expect(value1).toEqual({ value: 1 });14 rerender();15 const value2 = result.current;16 expect(value2).toEqual({ value: 1 });17 expect(value2).toBe(value1);18 rerender({ value: 2 });19 const value3 = result.current;20 expect(value3).toEqual({ value: 2 });21 expect(value3).not.toBe(value1);22 });23 test('should handle useCallback hook', () => {24 const { result, rerender } = renderHook(25 ({ value }) => {26 const callback = () => ({ value });27 return useCallback(callback, [value]);28 },29 {30 initialProps: { value: 1 }31 }32 );33 const callback1 = result.current;34 const callbackValue1 = callback1();35 expect(callbackValue1).toEqual({ value: 1 });36 const callback2 = result.current;37 const callbackValue2 = callback2();38 expect(callbackValue2).toEqual({ value: 1 });39 expect(callback2).toBe(callback1);40 rerender({ value: 2 });41 const callback3 = result.current;42 const callbackValue3 = callback3();43 expect(callbackValue3).toEqual({ value: 2 });44 expect(callback3).not.toBe(callback1);45 });...

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Using AI Code Generation

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1import { renderHook, act } from '@testing-library/​react-hooks';2import { useCounter } from './​useCounter';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});12import { renderHook, act } from '@testing-library/​react-hooks';13import { useCounter } from './​useCounter';14describe('useCounter', () => {15 it('should increment counter', () => {16 const { result } = renderHook(() => useCounter());17 act(() => {18 result.current.increment();19 });20 expect(result.current.count).toBe(1);21 });22});

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Using AI Code Generation

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1import { callbackValue2 } from 'testing-library-react-hooks';2import { callbackValue2 } from 'testing-library-react-hooks';3import { callbackValue2 } from 'testing-library-react-hooks';4import { callbackValue2 } from 'testing-library-react-hooks';5import { callbackValue2 } from 'testing-library-react-hooks';6import { callbackValue2 } from 'testing-library-react-hooks';7import { callbackValue2 } from 'testing-library-react-hooks';8import { callbackValue2 } from 'testing-library-react-hooks';9import { callbackValue2 } from 'testing-library-react-hooks';10import { callbackValue2 } from 'testing-library-react-hooks';11import { callbackValue2 } from 'testing-library-react-hooks';12import { callbackValue2 } from 'testing-library-react-hooks';

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Using AI Code Generation

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1import { callbackValue2 } from 'testing-library-react-hooks'2import { useMyHook } from './​my-hook'3test('my-hook', () => {4 const { result, rerender } = renderHook(() => useMyHook())5 expect(callbackValue2(result.current)).toBe('initial value')6 rerender()7 expect(callbackValue2(result.current)).toBe('new value')8})9import { useReducer } from 'react'10import { useAsyncEffect } from 'use-async-effect'11export const useMyHook = () => {12 const [value, setValue] = useReducer((_, newValue) => newValue, 'initial value')13 useAsyncEffect(async () => {14 setValue(newValue)15 }, [])16}17import { CallbackValue } from 'testing-library-react-hooks'18import { useMyHook } from './​my-hook'19test('my-hook', () => {20 const { result, rerender } = renderHook(() => useMyHook())21 expect((result.current as CallbackValue<string>).callbackValue).toBe('initial value')22 rerender()23 expect((result.current as CallbackValue<string>).callbackValue).toBe('new value')24})

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Using AI Code Generation

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1import {callbackValue2} from 'testing-library-react-hooks';2test('callbackValue2', async () => {3 const {result, waitForNextUpdate} = renderHook(() => useTestHook());4 expect(result.current).toBe(0);5 act(() => {6 result.current = 1;7 });8 expect(result.current).toBe(1);9 await waitForNextUpdate();10 expect(result.current).toBe(2);11});12import {callbackValue2} from 'testing-library-react-hooks';13test('callbackValue2', async () => {14 const {result, waitForNextUpdate} = renderHook(() => useTestHook());15 expect(result.current).toBe(0);16 act(() => {17 result.current = 1;18 });19 expect(result.current).toBe(1);20 await waitForNextUpdate();21 expect(result.current).toBe(2);22});23import {callbackValue2} from 'testing-library-react-hooks';24test('callbackValue2', async () => {25 const {result, waitForNextUpdate} = renderHook(() => useTestHook());26 expect(result.current).toBe(0);27 act(() => {28 result.current = 1;29 });30 expect(result.current).toBe(1);31 await waitForNextUpdate();32 expect(result.current).toBe(2);33});34import {callbackValue2} from 'testing-library-react-hooks';35test('callbackValue2', async () => {36 const {result, waitForNextUpdate} = renderHook(() => useTestHook());37 expect(result.current).toBe(0);38 act(() => {39 result.current = 1;40 });41 expect(result.current).toBe(1);42 await waitForNextUpdate();43 expect(result.current).toBe(2);44});45import {callbackValue2} from 'testing-library-react-hooks';46test('callbackValue2', async () => {47 const {result, waitForNextUpdate} = renderHook(() => useTestHook());48 expect(result.current).toBe(0);49 act(() => {

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Using AI Code Generation

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1import { callbackValue2 } from "testing-library-react-hooks";2import useCounter from "../​hooks/​useCounter";3describe("useCounter", () => {4 it("should increment the counter", () => {5 const { result, rerender } = callbackValue2(useCounter);6 expect(result.current.count).toBe(0);7 const increment = result.current.increment;8 increment();9 expect(result.current.count).toBe(1);10 rerender();11 expect(result.current.count).toBe(1);12 });13});14import { useState } from "react";15const useCounter = () => {16 const [count, setCount] = useState(0);17 const increment = () => {18 setCount(count + 1);19 };20 return { count, increment };21};22export default useCounter;23import { renderHook, act } from "@testing-library/​react-hooks";24const callbackValue2 = (callback) => {25 const hook = renderHook(callback);26 const { result, rerender } = hook;27 const increment = () => {28 act(() => {29 result.current.increment();30 });31 };32 return { result, rerender, increment };33};34export { callbackValue2 };35{36 "dependencies": {37 },38 "scripts": {39 },40 "eslintConfig": {41 },42 "browserslist": {

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