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

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

Publisher.js

Source:Publisher.js

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  });...

useMemo.test.js

Source:useMemo.test.js

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  });...

Using AI Code Generation

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});

Using AI Code Generation

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';

Using AI Code Generation

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})

Using AI Code Generation

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(() => {

Using AI Code Generation

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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