Best JavaScript code snippet using testing-library-react-hooks
console.ts
Source: console.ts
1const consoleFilters = [2 /^The above error occurred in the <.*?> component:/, // error boundary output3 /^Error: Uncaught .+/ // jsdom output4]5function suppressErrorOutput() {6 const originalError = console.error7 const error = (...args: Parameters<typeof originalError>) => {8 const message = typeof args[0] === 'string' ? args[0] : null9 if (!message || !consoleFilters.some((filter) => filter.test(message))) {10 originalError(...args)11 }12 }13 console.error = error14 return () => {15 console.error = originalError16 }17}18function errorFilteringDisabled() {19 try {20 return !!process.env.RHTL_DISABLE_ERROR_FILTERING21 } catch {22 // falling back in the case that process.env.RHTL_DISABLE_ERROR_FILTERING cannot be accessed (e.g. browser environment)23 return false24 }25}26function enableErrorOutputSuppression() {27 // Automatically registers console error suppression and restoration in supported testing frameworks28 if (29 typeof beforeEach === 'function' &&30 typeof afterEach === 'function' &&31 !errorFilteringDisabled()32 ) {33 let restoreConsole!: () => void34 beforeEach(() => {35 restoreConsole = suppressErrorOutput()36 })37 afterEach(() => restoreConsole())38 }39}...
errorSuppression.disabled.test.ts
1// This verifies that if RHTL_DISABLE_ERROR_FILTERING is set2// then we DON'T auto-wire up the afterEach for folks3describe('error output suppression (disabled) tests', () => {4 const originalConsoleError = console.error5 process.env.RHTL_DISABLE_ERROR_FILTERING = 'true'6 runForRenderers(['default', 'dom', 'native', 'server'], () => {7 test('should not patch console.error', () => {8 expect(console.error).toBe(originalConsoleError)9 })10 })11})12// eslint-disable-next-line jest/no-export...
disable-error-filtering.js
Source: disable-error-filtering.js
1try {2 process.env.RHTL_DISABLE_ERROR_FILTERING = true3} catch {4 // falling back in the case that process.env.RHTL_DISABLE_ERROR_FILTERING cannot be accessed (e.g. browser environment)5 console.warn(6 'Could not disable error filtering as process.env.RHTL_DISABLE_ERROR_FILTERING could not be accessed.'7 )...
Using AI Code Generation
1import React from 'react';2import { render, screen } from '@testing-library/react';3import userEvent from '@testing-library/user-event';4import { RHTL_DISABLE_ERROR_FILTERING } from 'react-hooks-testing-library';5import App from './App';6test('should not throw error when the user clicks the button', () => {7 render(<App />);8 userEvent.click(screen.getByRole('button'));9});10import React from 'react';11import { useCounter } from './useCounter';12export default function App() {13 const { count, increment, decrement } = useCounter();14 return (15 <h1>{count}</h1>16 <button onClick={increment}>Increment</button>17 <button onClick={decrement}>Decrement</button>18 );19}20import { useState, useCallback } from 'react';21export default function useCounter() {22 const [count, setCount] = useState(0);23 const increment = useCallback(() => setCount((c) => c + 1), []);24 const decrement = useCallback(() => setCount((c) => c - 1), []);25 return { count, increment, decrement };26}27import React from 'react';28import { render, screen } from '@testing-library/react';29import userEvent from '@testing-library/user-event';30import { act } from 'react-dom/test-utils';31import App from './App';32test('should not throw error when the user clicks the button', () => {33 render(<App />);34 act(() => {35 userEvent.click(screen.getByRole('button'));36 });37});38import React from 'react';39import { useCounter } from './useCounter';40export default function App() {41 const { count, increment, decrement } = useCounter();42 return (43 <h1>{count}</h1>44 <button onClick={increment}>Increment</button>45 <button onClick={decrement}>Decrement</button>46 );47}48import { useState, useCallback } from 'react';49export default function useCounter() {50 const [count, setCount] = useState(0);51 const increment = useCallback(() => setCount((
Using AI Code Generation
1import React from 'react';2import { renderHook, act } from 'react-hooks-testing-library';3import { useCounter } from './useCounter';4test('useCounter', () => {5 const { result } = renderHook(() => useCounter());6 expect(result.current.count).toBe(0);7 act(() => result.current.increment());8 expect(result.current.count).toBe(1);9 act(() => result.current.decrement());10 expect(result.current.count).toBe(0);11});12import { useState } from 'react';13export const useCounter = () => {14 const [count, setCount] = useState(0);15 const increment = () => setCount(count + 1);16 const decrement = () => setCount(count - 1);17 return {18 };19};
Using AI Code Generation
1import { RHTL_DISABLE_ERROR_FILTERING } from 'react-hooks-testing-library';2import { renderHook } from 'react-hooks-testing-library';3import { useFetch } from './useFetch';4beforeAll(() => {5 jest.spyOn(console, 'error').mockImplementation(() => {});6 process.env[RHTL_DISABLE_ERROR_FILTERING] = true;7});8afterAll(() => {9 console.error.mockRestore();10 delete process.env[RHTL_DISABLE_ERROR_FILTERING];11});12afterEach(() => {13 jest.clearAllMocks();14});15test('should return data', async () => {16 const { result, waitForNextUpdate } = renderHook(() => useFetch(mockUrl));17 await waitForNextUpdate();18 expect(result.current.data).toEqual({ userId: 1, id: 1, title: 'delectus aut autem', completed: false });19});20test('should return error', async () => {21 const { result, waitForNextUpdate } = renderHook(() =>22 useFetch(mockUrl, { method: 'POST', body: { userId: 1, id: 1, title: 'delectus aut autem', completed: false } }),23 );24 await waitForNextUpdate();25 expect(result.current.error).toEqual('Method not allowed');26});27import { useState, useEffect, useCallback } from 'react';28export const useFetch = (url, options) => {29 const [data, setData] = useState(null);30 const [error, setError] = useState(null);31 const [loading, setLoading] = useState(false);32 const fetchUrl = useCallback(async () => {33 try {34 setLoading(true);35 const response = await fetch(url, options);36 if (!response.ok) {37 throw new Error(response.statusText);38 }39 const json = await response.json();40 setData(json);41 } catch (error) {42 setError(error.message);43 } finally {44 setLoading(false);45 }46 }, [url, options]);47 useEffect(() => {48 fetchUrl();49 }, [fetchUrl]);50 return { loading, data, error };51};52import React, { useState } from 'react';53import './App.css';54import { useFetch } from './
Using AI Code Generation
1import { renderHook } from '@testing-library/react-hooks';2import { RHTL_DISABLE_ERROR_FILTERING } from '@testing-library/react-hooks/dom';3const { result, waitForNextUpdate } = renderHook(4 {5 wrapper: ({ children }) => (6 <ReactQueryConfigProvider config={queryConfig}>7 {children}8 },9);10import { renderHook } from '@testing-library/react-hooks';11import { RHTL_DISABLE_ERROR_FILTERING } from '@testing-library/react-hooks/dom';12const { result, waitForNextUpdate } = renderHook(13 {14 wrapper: ({ children }) => (15 <ReactQueryConfigProvider config={queryConfig}>16 {children}17 },18);19import { renderHook } from '@testing-library/react-hooks';20import { RHTL_DISABLE_ERROR_FILTERING } from '@testing-library/react-hooks/dom';21const { result, waitForNextUpdate } = renderHook(22 {23 wrapper: ({ children }) => (24 <ReactQueryConfigProvider config={queryConfig}>25 {children}26 },27);28import { renderHook } from '@testing-library/react-hooks';29import { RHTL_DISABLE_ERROR_FILTERING } from '@testing-library/react-hooks/dom';30const { result, waitForNextUpdate } = renderHook(
Using AI Code Generation
1import { renderHook, act } from '@testing-library/react-hooks';2import { useCounter } from './useCounter';3describe('useCounter', () => {4 test('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 test('should increment counter', () => {16 const { result } = renderHook(() => useCounter());17 act(() => {18 result.current.increment();19 });20 expect(result.current.count).toBe(1);21 });22});23import { renderHook, act } from '@testing-library/react-hooks';24import { useCounter } from './useCounter';25describe('useCounter', () => {26 test('should increment counter', () => {27 const { result } = renderHook(() => useCounter());28 act(() => {29 result.current.increment();30 });31 expect(result.current.count).toBe(1);32 });33});34import { renderHook, act } from '@testing-library/react-hooks';35import { useCounter } from './useCounter';36describe('useCounter', () => {37 test('should increment counter', () => {38 const { result } = renderHook(() => useCounter());39 act(() => {40 result.current.increment();41 });42 expect(result.current.count).toBe(1);43 });44});45import { renderHook, act } from '@testing-library/react-hooks';46import { useCounter } from './useCounter';47describe('useCounter', () => {48 test('should increment counter', () => {
Using AI Code Generation
1import React from 'react';2import { renderHook } from '@testing-library/react-hooks';3import { useCounter } from './useCounter';4beforeAll(() => {5 process.env.RHTL_DISABLE_ERROR_FILTERING = 'true';6});7describe('useCounter', () => {8 it('should increment', () => {9 const { result } = renderHook(() => useCounter());10 expect(result.current.count).toBe(0);11 result.current.increment();12 expect(result.current.count).toBe(1);13 });14});15import React from 'react';16import { renderHook } from '@testing-library/react-hooks';17import { useCounter } from './useCounter';18beforeAll(() => {19 process.env.RHTL_DISABLE_ERROR_FILTERING = 'true';20});21describe('useCounter', () => {22 it('should increment', () => {23 const { result } = renderHook(() => useCounter());24 expect(result.current.count).toBe(0);25 result.current.increment();26 expect(result.current.count).toBe(2);27 });28});29import React from 'react';30import { renderHook } from '@testing-library/react-hooks';31import { useCounter } from './useCounter';32beforeAll(() => {33 process.env.RHTL_DISABLE_ERROR_FILTERING = 'true';34});35describe('useCounter', () => {36 it('should increment', () => {37 const { result } = renderHook(() => useCounter());38 expect(result.current.count).toBe(0);39 result.current.increment();40 expect(result.current.count).toBe(3);41 });42});43import React from 'react';44import { renderHook } from '@testing-library/react-hooks';45import { useCounter } from './useCounter';46beforeAll(() => {47 process.env.RHTL_DISABLE_ERROR_FILTERING = 'true';48});49describe('useCounter', () => {50 it('should increment', () => {51 const { result } = renderHook(()
Using AI Code Generation
1describe('useFetch', () => {2 it('should return correct data', async () => {3 await waitForNextUpdate();4 expect(result.current.data.name).toEqual('Luke Skywalker');5 });6 it('should return correct error', async () => {7 RHTL_DISABLE_ERROR_FILTERING = true;8 await waitForNextUpdate();9 expect(result.current.error).toEqual('Error: Network Error');10 });11});12describe('useFetch', () => {13 it('should return correct data', async () => {14 await waitForNextUpdate();15 expect(result.current.data.name).toEqual('Luke Skywalker');16 });17 it('should return correct error', async () => {18 });19 await waitForNextUpdate();20 expect(result.current.error).toEqual('Error: Network Error');21 });22});23describe('useFetch', () => {24 it('should return correct data', async () => {25 await waitForNextUpdate();26 expect(result.current.data.name).toEqual('Luke Skywalker');27 });28 it('should return correct error', async () => {29 await waitForNextUpdate();30 expect(result.current.error).toEqual('Error: Network Error');31 });32});
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