Best JavaScript code snippet using testing-library-react-hooks
test_require_lazy.js
Source: test_require_lazy.js
1/* Any copyright is dedicated to the Public Domain.2 http://creativecommons.org/publicdomain/zero/1.0/ */3// Test devtools.lazyRequireGetter4function run_test() {5 const name = "asyncUtils";6 const path = "devtools/shared/async-utils";7 const o = {};8 devtools.lazyRequireGetter(o, name, path);9 const asyncUtils = require(path);10 // XXX: do_check_eq only works on primitive types, so we have this11 // do_check_true of an equality expression.12 do_check_true(o.asyncUtils === asyncUtils);13 // A non-main loader should get a new object via |lazyRequireGetter|, just14 // as it would via a direct |require|.15 const o2 = {};16 let loader = new DevToolsLoader();17 // We have to init the loader by loading any module before lazyRequireGetter is available18 loader.require("devtools/shared/DevToolsUtils");19 loader.lazyRequireGetter(o2, name, path);20 do_check_true(o2.asyncUtils !== asyncUtils);21 // A module required via a non-main loader that then uses |lazyRequireGetter|22 // should also get the same object from that non-main loader.23 let exposeLoader = loader.require("xpcshell-test/exposeLoader");24 const o3 = exposeLoader.exerciseLazyRequire(name, path);25 do_check_true(o3.asyncUtils === o2.asyncUtils);...
Using AI Code Generation
1import { renderHook, act } from '@testing-library/react-hooks'2import { useCounter } from './useCounter'3describe('useCounter', () => {4 it('should increment counter', async () => {5 const { result, waitForNextUpdate } = renderHook(() => useCounter())6 act(() => {7 result.current.increment()8 })9 await waitForNextUpdate()10 expect(result.current.count).toBe(1)11 })12})
Using AI Code Generation
1import { renderHook, act } from '@testing-library/react-hooks'2import { useAsync } from 'react-async-hook'3const mockFetch = () => {4 return new Promise((resolve, reject) => {5 setTimeout(() => {6 resolve({ data: 'test' })7 }, 500)8 })9}10test('useAsync hook', async () => {11 const { result, waitForNextUpdate } = renderHook(() => useAsync(mockFetch, []))12 expect(result.current.loading).toBe(true)13 expect(result.current.error).toBeUndefined()14 expect(result.current.result).toBeUndefined()15 await waitForNextUpdate()16 expect(result.current.loading).toBe(false)17 expect(result.current.error).toBeUndefined()18 expect(result.current.result).toEqual({ data: 'test' })19})20import { renderHook, act } from '@testing-library/react-hooks'21import { useAsync } from 'react-async-hook'22import { asyncUtils } from '@react-hookz/web'23const mockFetch = () => {24 return new Promise((resolve, reject) => {25 setTimeout(() => {26 resolve({ data: 'test' })27 }, 500)28 })29}30test('useAsync hook', async () => {31 const { result, waitForNextUpdate } = renderHook(() => useAsync(mockFetch, []))32 expect(result.current.loading).toBe(true)33 expect(result.current.error).toBeUndefined()34 expect(result.current.result).toBeUndefined()35 await waitForNextUpdate()36 expect(result.current.loading).toBe(false)37 expect(result.current.error).toBeUndefined()38 expect(result.current.result).toEqual({ data: 'test' })39})40import { renderHook, act } from '@testing-library/react-hooks'41import { useAsync } from 'react-async-hook'42import { asyncUtils } from '@react-hookz/web'43const mockFetch = () => {44 return new Promise((resolve, reject) => {45 setTimeout(() => {46 resolve({ data: 'test' })47 }, 500)48 })49}50test('useAsync hook', async () => {51 const { result, waitForNextUpdate } = renderHook(() => useAsync(mockFetch, []))52 expect(result.current.loading).toBe(true)53 expect(result
Using AI Code Generation
1import { act, renderHook } from "@testing-library/react-hooks";2import { useAsync } from "react-async";3test("useAsync", async () => {4 const asyncFn = jest.fn().mockResolvedValue("foo");5 const { result, waitForNextUpdate } = renderHook(() =>6 useAsync({ promiseFn: asyncFn })7 );8 expect(result.current.isLoading).toBe(true);9 expect(asyncFn).toBeCalledTimes(1);10 await act(async () => {11 await waitForNextUpdate();12 });13 expect(result.current.data).toBe("foo");14});15import { act, renderHook } from "@testing-library/react-hooks";16import { useAsync } from "react-async";17test("useAsync", async () => {18 const asyncFn = jest.fn().mockResolvedValue("foo");19 const { result, waitForNextUpdate } = renderHook(() =>20 useAsync({ promiseFn: asyncFn })21 );22 expect(result.current.isLoading).toBe(true);23 expect(asyncFn).toBeCalledTimes(1);24 await act(async () => {25 await waitForNextUpdate();26 });27 expect(result.current.data).toBe("foo");28});29import { act, renderHook } from "@testing-library/react-hooks";30import { useAsync } from "react-async";31test("useAsync", async () => {32 const asyncFn = jest.fn().mockResolvedValue("foo");33 const { result, waitForNextUpdate } = renderHook(() =>34 useAsync({ promiseFn: asyncFn })35 );36 expect(result.current.isLoading).toBe(true);37 expect(asyncFn).toBeCalledTimes(1);38 await act(async () => {39 await waitForNextUpdate();40 });41 expect(result.current.data).toBe("foo");42});43import { act, renderHook } from "@testing-library/react-hooks";44import { useAsync } from "react-async";45test("useAsync", async () => {46 const asyncFn = jest.fn().mockResolvedValue("foo");47 const { result, waitForNextUpdate } = renderHook(() =>48 useAsync({ promiseFn: asyncFn })49 );50 expect(result.current.isLoading).toBe(true);51 expect(asyncFn).toBeCalledTimes(1);52 await act(async () => {53 await waitForNextUpdate();54 });55 expect(result.current.data).toBe("foo
Using AI Code Generation
1import { renderHook, act } from '@testing-library/react-hooks';2import { useCounter } from './useCounter';3describe('useCounter', () => {4 it('should increment the count', () => {5 const { result } = renderHook(() => useCounter());6 act(() => {7 result.current.increment();8 });9 expect(result.current.count).toEqual(1);10 });11});12import { useState } from 'react';13export const useCounter = () => {14 const [count, setCount] = useState(0);15 const increment = () => setCount(count + 1);16 return { count, increment };17};18import React from 'react';19import { render } from '@testing-library/react';20import Counter from './Counter';21test('Counter should render', () => {22 const { container, getByText, getByTestId } = render(<Counter />);23 expect(container).toBeInTheDocument();24 expect(getByText('Count:')).toBeInTheDocument();25 expect(getByTestId('count')).toBeInTheDocument();26});27import React from 'react';28const Counter = () => {29 return (30 );31};32export default Counter;
Using AI Code Generation
1import { renderHook, act } from '@testing-library/react-hooks';2import { useAsync } from 'react-async';3import { fetchUser } from './fetchUser';4import { useFetchUser } from './useFetchUser';5describe('useFetchUser', () => {6 test('should fetch user', async () => {7 const { result, waitForNextUpdate } = renderHook(() => useFetchUser());8 expect(result.current.loading).toBe(true);9 expect(result.current.error).toBeUndefined();10 expect(result.current.user).toBeUndefined();11 await waitForNextUpdate();12 expect(result.current.loading).toBe(false);13 expect(result.current.error).toBeUndefined();14 expect(result.current.user).toEqual({ name: 'John Doe' });15 });16 test('should return error', async () => {17 const { result, waitForNextUpdate } = renderHook(() =>18 useFetchUser({ error: true })19 );20 expect(result.current.loading).toBe(true);21 expect(result.current.error).toBeUndefined();22 expect(result.current.user).toBeUndefined();23 await waitForNextUpdate();24 expect(result.current.loading).toBe(false);25 expect(result.current.error).toEqual('Error fetching user');26 expect(result.current.user).toBeUndefined();27 });28});29import { useAsync } from 'react-async';30import { fetchUser } from './fetchUser';31export const useFetchUser = ({ error = false } = {}) => {32 const { data, error, isLoading } = useAsync({33 });34 return {35 };36};37export const fetchUser = ({ error = false } = {}) => {38 return new Promise((resolve, reject) => {39 setTimeout(() => {40 if (error) {41 reject('Error fetching user');42 } else {43 resolve({ name: 'John Doe' });44 }45 }, 1000);46 });47};
Using AI Code Generation
1import { renderHook, act } from 'test-utils'2test('useCounter', () => {3 const { result } = renderHook(useCounter)4 expect(result.current.count).toBe(0)5 act(() => {6 result.current.increment()7 })8 expect(result.current.count).toBe(1)9 act(() => {10 result.current.decrement()11 })12 expect(result.current.count).toBe(0)13})14test('useCounter', () => {15 const { result } = renderHook(useCounter)16 expect(result.current.count).toBe(0)17 act(() => {18 result.current.increment()19 })20 expect(result.current.count).toBe(1)21 act(() => {22 result.current.decrement()23 })24 expect(result.current.count).toBe(0)25})26test('useCounter', () => {27 const { result } = renderHook(useCounter)28 expect(result.current.count).toBe(0)29 act(() => {30 result.current.increment()31 })32 expect(result.current.count).toBe(1)33 act(() => {34 result.current.decrement()35 })36 expect(result.current.count).toBe(0)37})38test('useCounter', () => {39 const { result } = renderHook(useCounter)40 expect(result.current.count).toBe(0)41 act(() => {42 result.current.increment()43 })44 expect(result.current.count).toBe(1)45 act(() => {46 result.current.decrement()47 })48 expect(result.current.count).toBe(0)49})50test('useCounter', () => {51 const { result } = renderHook(useCounter)52 expect(result.current.count).toBe(0)53 act(() => {54 result.current.increment()55 })56 expect(result.current.count).toBe(1)57 act(() => {58 result.current.decrement()59 })60 expect(result.current.count).toBe(0)61})62test('useCounter', () => {63 const { result } = renderHook(useCounter)64 expect(result.current.count).toBe(0)65 act(() => {66 result.current.increment()67 })68 expect(result.current.count).toBe(1)
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