KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

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

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

index.js

Source:index.js

...94		// expect(global.console.warn).toHaveBeenCalledWith("blaaaa");95		expect(global.console.warn).toHaveBeenCalledTimes(2);96		expect(global.console.warn).toHaveBeenCalledWith("docco: have a template but no stylesheet file specified.");97		expect(global.console.warn).toHaveBeenCalledWith("docco: could not load layout template \"foo.jst\"");98		restoreConsole();99	});100});101describe("Format", () => {102	it("exports expected api", () => {103		expect(format.format).toEqual(format.default);104	});105	it("runs without erroring", () => {106		expect(format.format).not.toThrow();107		const result = format.format();108		expect(result).toBeType("array");109		expect(result.length).toBe(0);110	});111	it("processes sections correctly", () => {112		marked.mockImplementationOnce((text) => `<p>${text}</p>`);113		const sections = [114			{codeText: "foo", docsText: "bar"}115		];116		const result = format.format("test.js", sections);117		expect(result).toBeType("array");118		expect(result.length).toBe(1);119		expect(result[0]).toMatchObject({120			codeText: "foo",121			docsText: "bar",122			codeHtml: "<div class=\"highlight\"><pre>foo</pre></div>",123			docsHtml: "<p>bar</p>"124		});125		marked.mockClear();126	});127	it("handles exceptions correctly", () => {128		highlight.highlight.mockImplementationOnce(() => {129			throw new Error("splode");130		});131		marked.mockImplementation((text) => `<p>${text}</p>`);132		const sections = [133			{codeText: "foo", docsText: "bar"}134		];135		expect(() => format.format("test.js", sections)).not.toThrow();136		const result = format.format("test.js", sections);137		expect(result).toBeType("array");138		expect(result.length).toBe(1);139		highlight.highlight.mockImplementationOnce(() => {140			throw new Error("splode");141		});142		expect(() => format.format("test.js", sections, {throw: true})).toThrow();143		marked.mockClear();144		highlight.highlight.mockClear();145	});146	it("sets markdown highlighter correctly", () => {147		const restoreConsole = mockConsole("warn");148		let options, result;149		marked.setOptions.mockImplementation((opts) => {150			options = opts;151		});152		const sections = [153			{codeText: "foo", docsText: "bar"}154		];155		highlight.getLanguage.mockImplementationOnce(() => {156			return false;157		});158		format.format("test.js", sections);159		expect(options).toBeType("object");160		expect(options.highlight).toBeType("function");161		result = options.highlight("foo");162		expect(result).toBe("foo");163		expect(global.console.warn).toHaveBeenCalledTimes(1);164		global.console.warn.mockClear();165		highlight.highlight.mockClear();166		highlight.getLanguage.mockClear();167		highlight.getLanguage.mockImplementationOnce(() => {168			return true;169		});170		highlight.highlight.mockImplementation((_lang, _code) => {171			return {value: "bar"};172		});173		format.format("test.js", sections);174		expect(options).toBeType("object");175		expect(options.highlight).toBeType("function");176		result = options.highlight("foo");177		expect(result).toBe("bar");178		expect(global.console.warn).not.toHaveBeenCalled();179		highlight.highlight.mockClear();180		highlight.getLanguage.mockClear();181		restoreConsole();182	});183});184describe("Parse", () => {185	it("has the correct default export", () => {186		expect(parse.parse).toEqual(parse.default);187	});188});189describe("CLI", () => {190	it("has the correct default export", () => {191		expect(cli.cli).toEqual(cli.default);192	});193	it("logs output correctly for no arguments", () => {194		const restoreConsole = mockConsole();195		commander.args = [];196		cli.cli();197		expect(global.console.log).toHaveBeenCalledTimes(2);198		expect(commander.version).toHaveBeenCalledTimes(1);199		expect(commander.usage).toHaveBeenCalledTimes(1);200		expect(commander.parse).toHaveBeenCalledTimes(1);201		expect(commander.option).toHaveBeenCalledTimes(11);202		expect(commander.helpInformation).toHaveBeenCalledTimes(1);203		commander.clearMocks();204		restoreConsole();205	});206	it("calls the provided generate function when called with arguments", () => {207		const restoreConsole = mockConsole();208		const test = jest.fn();209		commander.args = ["dummy", "data"];210		cli.cli(commander.args, test);211		expect(global.console.log).toHaveBeenCalledTimes(1);212		expect(test).toHaveBeenCalledTimes(1);213		expect(commander.version).toHaveBeenCalledTimes(1);214		expect(commander.usage).toHaveBeenCalledTimes(1);215		expect(commander.parse).toHaveBeenCalledTimes(1);216		expect(commander.option).toHaveBeenCalledTimes(11);217		expect(commander.helpInformation).not.toHaveBeenCalled();218		commander.clearMocks();219		restoreConsole();220	});221	it("can read a languages file", () => {222		fs.readFileSync.mockClear();223		cli.readLanguages("foo.json");224		expect(fs.readFileSync).toHaveBeenCalledTimes(1);225	});226});227describe("Languages", () => {228	it("has the correct exports", () => {229		expect(languages.default).toBeUndefined();230		expect(languages.languages).toBeDefined();231		expect(languages.languages).toBeType("object");232		expect(languages.getLanguage).toBeDefined();233		expect(languages.getLanguage).toBeType("function");234	});235	it("can get a language based on extension", () => {236		const lang = languages.getLanguage("foo.js");237		expect(lang).toBeType("object");238		expect(lang.name).toBe("javascript");239		expect(lang).toMatchObject({240			name: expect.any(String),241			symbol: expect.any(String),242			commentMatcher: expect.any(RegExp),243			commentFilter: expect.any(RegExp)244		});245	});246	it("can be passed a custom language config", () => {247		const lang = languages.getLanguage("foo.bar", {248			languages: {249				".bar": {"name": "qux"}250			}251		});252		expect(lang.name).toBe("qux");253	});254	it("can detect literate versions of code correctly", () => {255		let lang = languages.getLanguage("foo.js.md", {256			languages: dummyLanguages257		});258		expect(lang.name).toBe("javascript");259		expect(lang.literate).toBe(true);260		lang = languages.getLanguage("foo.md", {261			languages: dummyLanguages262		});263		expect(lang.name).toBe("markdown");264		expect(lang.literate).toBeUndefined();265	});266});267describe("Write", () => {268	it("is defined correctly", () => {269		expect(write.write).toEqual(write.default);270		expect(write).toMatchObject({271			write: expect.any(Function),272			destinationFactory: expect.any(Function),273			relativeFactory: expect.any(Function),274			sectionTest: expect.any(Function)275		});276	});277	it("returns functions from Factories", () => {278		expect(write.destinationFactory()).toBeType("function");279		expect(write.relativeFactory()).toBeType("function");280	});281	it("can get the destination from source file", () => {282		const foo = write.destinationFactory("bar.js", {output: "foo", languages: dummyLanguages});283		expect(foo("bar.js")).toBe("foo/bar.html");284		const bar = write.destinationFactory("qux.md", {output: "foo", languages: dummyLanguages});285		expect(bar("qux.md")).toBe("foo/qux.md");286	});287	it("can get the relative info from source file", () => {288		const bar = write.destinationFactory("bar.js", {output: "foo", languages: dummyLanguages});289		const foo = write.relativeFactory("bar.js", bar);290		expect(foo("bar.js")).toBe("../bar.js");291	});292	it("can check a section for validity", () => {293		expect(write.sectionTest("foo")).toBe(false);294		expect(write.sectionTest({})).toBe(false);295		expect(write.sectionTest({docsText: ""})).toBe(false);296		expect(write.sectionTest({docsText: "something"})).toBe(true);297	});298	it("produces no output when no template is present", () => {299		const restoreConsole = mockConsole("log");300		const config = {301			output: "foo",302			languages: dummyLanguages303		};304		write.write("bar.js", [{}], config);305		expect(global.console.log).toHaveBeenCalledTimes(0);306		expect(fs.outputFileSync).toHaveBeenCalledTimes(0);307		restoreConsole();308	});309	it("produces basic output", () => {310		const restoreConsole = mockConsole("log");311		const config = {312			output: "foo",313			languages: dummyLanguages,314			template: jest.fn().mockImplementation(() => {315				return "dummy output";316			})317		};318		write.write("bar.js", [{}], config);319		expect(global.console.log).toHaveBeenCalledTimes(0);320		expect(config.template).toHaveBeenCalledTimes(1);321		expect(fs.outputFileSync).toHaveBeenCalledTimes(1);322		restoreConsole();323		fs.outputFileSync.mockClear();324	});325	it("produces no output when dryrun is set", () => {326		const restoreConsole = mockConsole("log");327		const config = {328			output: "foo",329			languages: dummyLanguages,330			template: jest.fn().mockImplementation(() => {331				return "dummy output";332			}),333			dryrun: true334		};335		write.write("bar.js", [{}], config);336		expect(global.console.log).toHaveBeenCalledTimes(0);337		expect(config.template).toHaveBeenCalledTimes(1);338		expect(fs.outputFileSync).toHaveBeenCalledTimes(0);339		restoreConsole();340		fs.outputFileSync.mockClear();341	});342	it("logs debug data when verbose is set", () => {343		const restoreConsole = mockConsole("log");344		const config = {345			output: "foo",346			languages: dummyLanguages,347			template: jest.fn().mockImplementation(() => {348				return "dummy output";349			}),350			verbose: true351		};352		write.write("bar.js", [{}], config);353		expect(global.console.log).toHaveBeenCalledTimes(1);354		expect(config.template).toHaveBeenCalledTimes(1);355		expect(fs.outputFileSync).toHaveBeenCalledTimes(1);356		restoreConsole();357		fs.outputFileSync.mockClear();358	});359	it("processes with markdown if section text present", () => {360		const restoreConsole = mockConsole("log");361		marked.lexer.mockImplementationOnce((text) => {362			return [{depth: 1, text}];363		});364		const config = {365			output: "foo",366			languages: dummyLanguages,367			template: jest.fn().mockImplementation(() => {368				return "dummy output";369			})370		};371		write.write("bar.js", [{docsText: "foo"}], config);372		const lastTemplateCallArgs = config.template.mock.calls[config.template.mock.calls.length - 1];373		expect(global.console.log).toHaveBeenCalledTimes(0);374		expect(config.template).toHaveBeenCalledTimes(1);375		expect(lastTemplateCallArgs[0]).toMatchObject({hasTitle: false});376		expect(fs.outputFileSync).toHaveBeenCalledTimes(1);377		expect(marked.lexer).toHaveBeenCalledTimes(1);378		marked.lexer.mockClear();379		config.template.mockClear();380		fs.outputFileSync.mockClear();381		restoreConsole();382	});383	it("processes markdown and sets a title correctly", () => {384		const restoreConsole = mockConsole("log");385		marked.lexer.mockImplementationOnce((text) => {386			return [{depth: 1, type: "heading", text}];387		});388		const config = {389			output: "foo",390			languages: dummyLanguages,391			template: jest.fn().mockImplementation(() => {392				return "dummy output";393			})394		};395		write.write("bar.js", [{docsText: "foo"}], config);396		const lastTemplateCallArgs = config.template.mock.calls[config.template.mock.calls.length - 1];397		expect(global.console.log).toHaveBeenCalledTimes(0);398		expect(config.template).toHaveBeenCalledTimes(1);399		expect(lastTemplateCallArgs[0]).toMatchObject({hasTitle: true, title: "foo"});400		expect(fs.outputFileSync).toHaveBeenCalledTimes(1);401		expect(marked.lexer).toHaveBeenCalledTimes(1);402		marked.lexer.mockClear();403		config.template.mockClear();404		fs.outputFileSync.mockClear();405		restoreConsole();406	});407	it("uses css if present", () => {408		const config = {409			output: "foo",410			languages: dummyLanguages,411			template: jest.fn().mockImplementation(() => {412				return "dummy output";413			}),414			css: "foo.css"415		};416		marked.lexer.mockImplementationOnce((text) => {417			return [{depth: 1, type: "heading", text}];418		});419		write.write("bar.js", [{docsText: "foo"}], config);...

logger-service-spec.js

Source:logger-service-spec.js

...21		LoggerService.log('some text');22		expect(console.log).toHaveBeenCalledWith(expect.stringMatching(/.*\s-\ssome text/));23		configs.loggingEnabled = originaLoggingEnabled;24		configs.currentLogLevel = originaCurrentLogLevel;25		restoreConsole();26		LoggerService.changeStrategy(configs.logStrategy);27	});28	test('if changeStategy defaults to toDate when no existing stategy', function () {29		const originaLoggingEnabled = configs.loggingEnabled;30		const originaCurrentLogLevel = configs.currentLogLevel;31		configs.loggingEnabled = true;32		configs.currentLogLevel = 1;33		const restoreConsole = mockConsole('log');34		LoggerService.stategy = undefined;35		LoggerService.changeStrategy('nonexistingStrategy');36		LoggerService.log('some text');37		expect(console.log).toHaveBeenCalledWith('some text');38		configs.loggingEnabled = originaLoggingEnabled;39		configs.currentLogLevel = originaCurrentLogLevel;40		restoreConsole();41		LoggerService.changeStrategy(configs.logStrategy);42	});43	test('if logs are produced when loggingEnabled is off', function () {44		const originalConfigs = configs.loggingEnabled;45		configs.loggingEnabled = false;46		const restoreConsole = mockConsole('log');47		LoggerService.log('some text');48		expect(console.log).not.toHaveBeenCalled();49		configs.loggingEnabled = originalConfigs;50		restoreConsole();51	});52	test('if logs are produced when loggingEnabled is on but logLevel is below currentLogLevel', function () {53		const originaLoggingEnabled = configs.loggingEnabled;54		const originaCurrentLogLevel = configs.currentLogLevel;55		configs.loggingEnabled = true;56		configs.currentLogLevel = 1;57		const restoreConsole = mockConsole('log');58		LoggerService.log('some text', 2);59		expect(console.log).not.toHaveBeenCalled();60		configs.loggingEnabled = originaLoggingEnabled;61		configs.currentLogLevel = originaCurrentLogLevel;62		restoreConsole();63	});64	test('if logs are produced when log stategy set to none', function () {65		const originaLoggingEnabled = configs.loggingEnabled;66		const originaCurrentLogLevel = configs.currentLogLevel;67		configs.loggingEnabled = true;68		configs.currentLogLevel = 1;69		const restoreConsole = mockConsole('log');70		LoggerService.changeStrategy('none');71		LoggerService.log('some text');72		expect(console.log).not.toHaveBeenCalled();73		configs.loggingEnabled = originaLoggingEnabled;74		configs.currentLogLevel = originaCurrentLogLevel;75		LoggerService.changeStrategy(configs.logStrategy);76		restoreConsole();77	});78	test('if logs are written into file when log stategy is set to toFile', function () {79		const originaLoggingEnabled = configs.loggingEnabled;80		const originaCurrentLogLevel = configs.currentLogLevel;81		configs.loggingEnabled = true;82		configs.currentLogLevel = 1;83		LoggerService.changeStrategy('toFile');84		LoggerService.log('some text');85		expect(fs.appendFile).toHaveBeenCalledWith(86			expect.stringMatching(/.*logs\.txt/),87			expect.stringMatching(/.*\s-\ssome text/),88			expect.any(Function)89		);90		configs.loggingEnabled = originaLoggingEnabled;91		configs.currentLogLevel = originaCurrentLogLevel;92		LoggerService.changeStrategy(configs.logStrategy);93	});94	test('if logs are produced when loggingEnabled is on and set to noDate', function () {95		const originaLoggingEnabled = configs.loggingEnabled;96		const originaCurrentLogLevel = configs.currentLogLevel;97		configs.loggingEnabled = true;98		configs.currentLogLevel = 1;99		const restoreConsole = mockConsole('log');100		LoggerService.changeStrategy('noDate');101		LoggerService.log('some text');102		expect(console.log).toHaveBeenCalledWith('some text');103		configs.loggingEnabled = originaLoggingEnabled;104		configs.currentLogLevel = originaCurrentLogLevel;105		restoreConsole();106		LoggerService.changeStrategy(configs.logStrategy);107	});108	test('if logs are produced when loggingEnabled is on and set to toConsole', function () {109		const originaLoggingEnabled = configs.loggingEnabled;110		const originaCurrentLogLevel = configs.currentLogLevel;111		configs.loggingEnabled = true;112		configs.currentLogLevel = 1;113		const restoreConsole = mockConsole('log');114		LoggerService.changeStrategy('toConsole');115		LoggerService.log('some text');116		expect(console.log).toHaveBeenCalledWith(expect.stringMatching(/.*\s-\ssome text/));117		configs.loggingEnabled = originaLoggingEnabled;118		configs.currentLogLevel = originaCurrentLogLevel;119		restoreConsole();120		LoggerService.changeStrategy(configs.logStrategy);121	});...

cli.spec.ts

Source:cli.spec.ts

...55    cli.run(['-h']);56    // @ts-ignore57    const output = console.log.mock.calls.map(i => i.join('')).join('\n');58    expect(output).not.toBe('');59    restoreConsole();60  });61  test('--help', () => {62    const restoreConsole = mockConsole();63    cli.run(['--help']);64    // @ts-ignore65    const output = console.log.mock.calls.map(i => i.join('')).join('\n');66    expect(output).not.toBe('');67    restoreConsole();68  });69  test('-l', () => {70    const restoreConsole = mockConsole();71    cli.run(['-l']);72    // @ts-ignore73    const output = console.log.mock.calls.map(i => i.join('')).join('\n');74    expect(output).toBe('{}');75    restoreConsole();76  });77  test('-l a', () => {78    const restoreConsole = mockConsole();79    cli.run(['-l', 'a']);80    // @ts-ignore81    const output = console.log.mock.calls.map(i => i.join('')).join('\n');82    expect(JSON.parse(output)).toStrictEqual({ key: 'a' });83    restoreConsole();84  });85  test('-e key op value', () => {86    const restoreConsole = mockConsole();87    cli.run(['-e', 'key', 'op', 'value']);88    // @ts-ignore89    const output = console.log.mock.calls.map(i => i.join('')).join('\n');90    expect(JSON.parse(output)).toStrictEqual({91      key: 'key',92      operator: 'op',93      value: 'value',94    });95    restoreConsole();96  });97  test('-unknown key op value', () => {98    const restoreConsole = mockConsole();99    const args = ['-unknown', 'key', 'op', 'value'];100    cli.run(args);101    // @ts-ignore102    const output = console.log.mock.calls.map(i => i.join('')).join('\n');103    expect(output).toBe(`æªç¥å½ä»¤: ${args.join(' ')}`);104    restoreConsole();105  });...

Using AI Code Generation

1import { restoreConsole } from 'testing-library-react-hooks';2restoreConsole();3import { restoreConsole } from 'testing-library-react-hooks';4restoreConsole();5import { restoreConsole } from 'testing-library-react-hooks';6restoreConsole();7import { restoreConsole } from 'testing-library-react-hooks';8restoreConsole();9import { restoreConsole } from 'testing-library-react-hooks';10restoreConsole();11import { restoreConsole } from 'testing-library-react-hooks';12restoreConsole();13import { restoreConsole } from 'testing-library-react-hooks';14restoreConsole();15import { restoreConsole } from 'testing-library-react-hooks';16restoreConsole();17import { restoreConsole } from 'testing-library-react-hooks';18restoreConsole();19import { restoreConsole } from 'testing-library-react-hooks';20restoreConsole();21import { restoreConsole } from 'testing-library-react-hooks';

Using AI Code Generation

1import { restoreConsole } from 'testing-library-react-hooks'2restoreConsole()3import { restoreConsole } from 'testing-library-react-hooks'4restoreConsole()5import { restoreConsole } from 'testing-library-react-hooks'6restoreConsole()7import { restoreConsole } from 'testing-library-react-hooks'8restoreConsole()9import { restoreConsole } from 'testing-library-react-hooks'10restoreConsole()11import { restoreConsole } from 'testing-library-react-hooks'12restoreConsole()13import { restoreConsole } from 'testing-library-react-hooks'14restoreConsole()

Using AI Code Generation

1import { restoreConsole } from 'testing-library-react-hooks';2afterEach(() => {3  restoreConsole();4});5import { restoreConsole } from 'testing-library-react-hooks';6afterEach(() => {7  restoreConsole();8});9Your name to display (optional):10Your name to display (optional

Using AI Code Generation

1import React from 'react';2import { shallow } from 'enzyme';3import App from './App';4describe('App', () => {5  it('should render', () => {6    const wrapper = shallow(<App />);7    expect(wrapper.exists()).toBe(true);8  });9});10import React from 'react';11import { shallow } from 'enzyme';12import App from './App';13describe('App', () => {14  it('should render', () => {15    const wrapper = shallow(<App />);16    expect(wrapper.exists()).toBe(true);17  });18});19import React from 'react';20import { shallow } from 'enzyme';21import App from './App';22describe('App', () => {23  it('should render', () => {24    const wrapper = shallow(<App />);25    expect(wrapper.exists()).toBe(true);26  });27});28import React from 'react';29import { shallow } from 'enzyme';30import App from './App';31describe('App', () => {32  it('should render', () => {33    const wrapper = shallow(<App />);34    expect(wrapper.exists()).toBe(true);35  });36});37import React from 'react';38import { shallow } from 'enzyme';39import App from './

Using AI Code Generation

1import { restoreConsole } from '@testing-library/react-hooks'2import { renderHook } from '@testing-library/react-hooks'3import { useFetch } from './useFetch'4import { act } from 'react-dom/test-utils'5describe('useFetch', () => {6  afterEach(() => {7    restoreConsole()8  })9  it('should return data', async () => {10    const { result, waitForNextUpdate } = renderHook(() =>11    await act(async () => {12      await waitForNextUpdate()13    })14    expect(result.current.data).toEqual({15    })16  })17})18import { useState, useEffect } from 'react'19import axios from 'axios'20export const useFetch = (url) => {21  const [data, setData] = useState(null)22  const [loading, setLoading] = useState(true)23  useEffect(() => {24    const fetchData = async () => {25      try {26        const response = await axios.get(url)27        setData(response.data)28        setLoading(false)29      } catch (error) {30        console.log(error)31      }32    }33    fetchData()34  }, [url])35  return { data, loading }36}37import { useFetch } from './useFetch'38jest.mock('axios')39describe('useFetch', () => {40  it('should return data', async () => {41    const { result, waitForNextUpdate } = renderHook(() =>42    await act(async () => {43      await waitForNextUpdate()44    })45    expect(result.current.data).toEqual({46    })47  })48})49import { useState, useEffect } from 'react'50import axios from 'axios'51export const useFetch = (url) => {52  const [data, setData] = useState(null)53  const [loading, setLoading] = useState(true)54  useEffect(() => {55    const fetchData = async () => {56      try {57        const response = await axios.get(url)58        setData(response.data)

Using AI Code Generation

1import { renderHook } from '@testing-library/react-hooks';2import { restoreConsole } from '@testing-library/react-hooks/dom';3describe('test1', () => {4  beforeAll(() => {5    restoreConsole();6  });7  test('test1', () => {8    const { result } = renderHook(() => useState('test'));9    expect(result.current[0]).toBe('test');10  });11});12import { renderHook } from '@testing-library/react-hooks';13import { restoreConsole } from '@testing-library/react-hooks/dom';14describe('test2', () => {15  beforeAll(() => {16    restoreConsole();17  });18  test('test2', () => {19    const { result } = renderHook(() => useState('test'));20    expect(result.current[0]).toBe('test');21  });22});23import { renderHook } from '@testing-library/react-hooks';24import { restoreConsole } from '@testing-library/react-hooks/dom';25describe('test3', () => {26  beforeAll(() => {27    restoreConsole();28  });29  test('test3', () => {30    const { result } = renderHook(() => useState('test'));31    expect(result.current[0]).toBe('test');32  });33});34import { renderHook } from '@testing-library/react-hooks';35import { restoreConsole } from '@testing-library/react-hooks/dom';36describe('test4', () => {37  beforeAll(() => {38    restoreConsole();39  });40  test('test4', () => {41    const { result } = renderHook(() => useState('test'));42    expect(result.current[0]).toBe('test');43  });44});45import { renderHook } from '@testing-library/react-hooks';46import { restoreConsole } from '@testing-library/react-hooks/dom';47describe('test5', () => {48  beforeAll(() => {49    restoreConsole();50  });51  test('test5', () => {52    const { result } = renderHook(() => useState('test'));53    expect(result.current[0]).toBe('test');54  });55});

Using AI Code Generation

1import { act, renderHook } from '@testing-library/react-hooks';2import { restoreConsole } from '@testing-library/react-hooks';3import { useCounter } from './counter';4describe('useCounter', () => {5  it('should increment the counter', () => {6    const { result } = renderHook(() => useCounter());7    act(() => {8      result.current.increment();9    });10    expect(result.current.count).toBe(1);11  });12  it('should decrement the counter', () => {13    const { result } = renderHook(() => useCounter());14    act(() => {15      result.current.decrement();16    });17    expect(result.current.count).toBe(-1);18  });19  it('should not allow the counter to go below 0', () => {20    const { result } = renderHook(() => useCounter());21    act(() => {22      result.current.decrement();23    });24    expect(result.current.count).toBe(0);25  });26  it('should display a warning when the counter goes below 0', () => {27    const { result } = renderHook(() => useCounter());28    act(() => {29      result.current.decrement();30    });31    expect(result.current.count).toBe(0);32    expect(console.error).toHaveBeenCalledTimes(1);33    expect(console.error).toHaveBeenCalledWith(34    );35    restoreConsole();36  });37});38import { useState } from 'react';39export const useCounter = () => {40  const [count, setCount] = useState(0);41  const increment = () => {42    setCount(count + 1);43  };44  const decrement = () => {45    if (count > 0) {46      setCount(count - 1);47    } else {48      console.error('Warning: Counter cannot go below 0');49    }50  };51  return {52  };53};54import React from 'react';55import { useCounter } from './counter';56const App = () => {57  const { count, increment, decrement } = useCounter();58  return (59      <button onClick={decrement}>-</button>60      <span>{count}</span>61      <button onClick={increment}>+</button>62  );63};64export default App;65import React from '

Using AI Code Generation

1import { renderHook } from '@testing-library/react-hooks'2import { restoreConsole } from 'jest-mock-console'3const { result, unmount } = renderHook(() => useMyHook())4restoreConsole()5unmount()6import { renderHook } from '@testing-library/react-hooks'7import { restoreConsole } from 'jest-mock-console'8const { result, unmount } = renderHook(() => useMyHook())9restoreConsole()10unmount()11jest.mock('jest-mock-console')12import { renderHook } from '@testing-library/react-hooks'13import { restoreConsole } from 'jest-mock-console'14const { result, unmount } = renderHook(() => useMyHook())15restoreConsole()16unmount()

Using AI Code Generation

1import { restoreConsole } from '@testing-library/react-hooks'2const spy = jest.spyOn(console, 'log')3afterEach(() => {4  cleanup()5  restoreConsole()6})7test('should log the count', () => {8  const { result } = renderHook(() => useCounter())9  act(() => {10    result.current.increment()11  })12  expect(spy).toHaveBeenCalledTimes(1)13  expect(spy).toHaveBeenCalledWith(1)14})15afterEach(() => {16  cleanup()17})18test('should increment the count', () => {19  const { result } = renderHook(() => useCounter())20  act(() => {21    result.current.increment()22  })23  expect(result.current.count).toBe(1)24})25afterEach(() => {26  cleanup()27})28test('should decrement the count', () => {29  const { result } = renderHook(() => useCounter())30  act(() => {

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.