Best JavaScript code snippet using testing-library-react-hooks
userCounter.js
Source: userCounter.js
1import React, {useCallback, useContext, useState} from 'react';2const CounterStepContext = React.createContext(1);3// eslint-disable-next-line react/prop-types4export const CounterStepProvider = ({step, children}) => (5 // eslint-disable-next-line react/jsx-filename-extension6 <CounterStepContext.Provider value={step}>{children}</CounterStepContext.Provider>7);8export function useCounter(initialValue = 0) {9 const [count, setCount] = useState(initialValue);10 const reset = useCallback(() => setCount(initialValue), [initialValue]);11 const increment = useCallback(() => setCount((x) => x + 1), []);12 const incrementAsync = useCallback(() => setTimeout(increment, 100), [increment]);13 const decrement = useCallback(() => setCount(count - 1), [count]);14 if (count > 9000) {15 throw Error("It's over 9000!");16 }17 return {18 count, reset, increment, incrementAsync, decrement,19 };20}21export function useCounterWithContext(initialValue = 0) {22 const [count, setCount] = useState(initialValue);23 const step = useContext(CounterStepContext);24 const reset = useCallback(() => setCount(initialValue), [initialValue]);25 const increment = useCallback(() => setCount((x) => x + step), [step]);26 const decrement = useCallback(() => setCount(count - step), [count, step]);27 return {28 count, reset, increment, decrement,29 };...
useCounterInContext.js
Source: useCounterInContext.js
1import React, { useCallback, useContext, useState } from 'react';2const CounterStepContext = React.createContext(1);3export const CounterStepProvider = ({ step, children }) => (4 <CounterStepContext.Provider value={step}>5 {children}6 </CounterStepContext.Provider>7);8export const useCounter = (initialValue = 0) => {9 const [count, setCount] = useState(initialValue);10 const step = useContext(CounterStepContext);11 const increment = useCallback(() => {12 setCount((x) => x + step);13 }, [step]);14 const incrementAsync = useCallback(() => {15 setTimeout(increment, 100);16 }, [increment]);17 const reset = useCallback(() => {18 setCount(initialValue);19 }, [initialValue]);20 return {21 count,22 increment,23 incrementAsync,24 reset,25 };...
useCounter.js
Source: useCounter.js
1import { useState, useCallback, createContext, useContext } from "react";2const CounterStepContext = createContext(1);3export const CounterStepProvider = ({ step, children }) => (4 <CounterStepContext.Provider value={step}>5 {children}6 </CounterStepContext.Provider>7);8const useCounter = (initialValue = 0) => {9 const [count, setCount] = useState(initialValue);10 const step = useContext(CounterStepContext);11 const increment = useCallback(() => setCount((x) => x + step), [step]);12 const incrementAsync = useCallback(13 () => setTimeout(increment, 100),14 [increment]15 );16 const reset = useCallback(() => setCount(initialValue), [initialValue]);17 return { count, increment, incrementAsync, reset };18};...
Using AI Code Generation
1import { renderHook } from '@testing-library/react-hooks';2import { useCounter } from './useCounter';3describe('useCounter', () => {4 it('should increment counter', () => {5 const { result } = renderHook(() => useCounter());6 expect(result.current.count).toBe(0);7 result.current.increment();8 expect(result.current.count).toBe(1);9 });10});11import { useState } from 'react';12export const useCounter = () => {13 const [count, setCount] = useState(0);14 const increment = () => setCount(count + 1);15 return {16 };17};
Using AI Code Generation
1import { renderHook } from '@testing-library/react-hooks';2import { useCounter } from './useCounter';3it('should increment counter', () => {4 const { result } = renderHook(() => useCounter());5 expect(result.current.count).toBe(0);6 result.current.increment();7 expect(result.current.count).toBe(1);8});9import { useState } from 'react';10export const useCounter = () => {11 const [count, setCount] = useState(0);12 const increment = () => setCount(count + 1);13 return { count, increment };14};15import { renderHook, act } from '@testing-library/react-hooks';16import { useCounter } from './useCounter';17it('should increment counter', () => {18 const { result } = renderHook(() => useCounter());19 expect(result.current.count).toBe(0);20 act(() => result.current.increment());21 expect(result.current.count).toBe(1);22});23import { useState } from 'react';24export const useCounter = () => {25 const [count, setCount] = useState(0);26 const increment = () => setCount(count + 1);27 return { count, increment };28};29import { renderHook, act } from '@testing-library/react-hooks';30import { useCounter } from './useCounter';31it('should increment counter', () => {32 const { result } = renderHook(() => useCounter());33 expect(result.current.count).toBe(0);34 act(() => result.current.increment());35 expect(result.current.count).toBe(1);36});37import { useState } from 'react';38export const useCounter = () => {39 const [count, setCount] = useState(0);40 const increment = () => setCount(count + 1);41 return { count, increment };42};43import { renderHook, act } from '@testing-library/react-hooks';44import { useCounter } from './useCounter';45it('should increment counter', () => {46 const { result } = renderHook(() => useCounter
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});23import { renderHook, act } from '@testing-library/react-hooks';24import { useCounter } from './useCounter';25describe('useCounter', () => {26 it('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 it('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 it('should increment counter', () => {49 const { result } = renderHook(() => useCounter());50 act(() => {51 result.current.increment();52 });53 expect(result.current.count).toBe(1);54 });55});
Using AI Code Generation
1import { renderHook } from "@testing-library/react-hooks";2import { useCounter } from "../useCounter";3describe("useCounter", () => {4 it("should increment counter", () => {5 const { result } = renderHook(() => useCounter());6 expect(result.current.count).toBe(0);7 result.current.increment();8 expect(result.current.count).toBe(1);9 });10});11import { useState } from "react";12export const useCounter = () => {13 const [count, setCount] = useState(0);14 const increment = () => setCount((prevCount) => prevCount + 1);15 return { count, increment };16};17import { renderHook } from "@testing-library/react-hooks";18import { useCounter } from "../useCounter";19import userEvent from "@testing-library/user-event";20describe("useCounter", () => {21 it("should increment counter", () => {22 const { result } = renderHook(() => useCounter());23 expect(result.current.count).toBe(0);24 userEvent.click(result.current.increment);25 expect(result.current.count).toBe(1);26 });27});28import { renderHook, act } from "@testing-library/react-hooks";29import { useCounter } from "../useCounter";30describe("useCounter", () => {31 it("should increment counter", () => {32 const { result } = renderHook(() => useCounter());
Using AI Code Generation
1import { renderHook, act } from '@testing-library/react-hooks';2import useCounter from './useCounter';3import { renderHook, act } from '@testing-library/react-hooks';4import useCounter from './useCounter';5test('should increment counter', () => {6 const { result } = renderHook(() => useCounter(2));7 act(() => {8 result.current.increment();9 });10 expect(result.current.count).toBe(3);11});12test('should decrement counter', () => {13 const { result } = renderHook(() => useCounter(2));14 act(() => {15 result.current.decrement();16 });17 expect(result.current.count).toBe(1);18});19test('should reset counter', () => {20 const { result } = renderHook(() => useCounter(2));21 act(() => {22 result.current.increment();23 result.current.increment();24 result.current.reset();25 });26 expect(result.current.count).toBe(2);27});
Using AI Code Generation
1import { renderHook, act } from '@testing-library/react-hooks';2import { useCounter } from './useCounter';3test('useCounter should work', () => {4 const { result } = renderHook(() => useCounter());5 expect(result.current.count).toBe(0);6 act(() => {7 result.current.increment();8 });9 expect(result.current.count).toBe(1);10});11import { createContext, useContext } from 'react';12const CounterStepContext = createContext();13export function useCounter() {14 const step = useContext(CounterStepContext);15 const [count, setCount] = useState(0);16 const increment = () => {17 setCount(count + step);18 };19 return {20 };21}22export function CounterStepProvider({ step, children }) {23 return (24 <CounterStepContext.Provider value={step}>25 {children}26 );27}28import { useCounter, CounterStepProvider } from './useCounter';29function App() {30 return (31 <CounterStepProvider step={5}>32 );33}34function Counter() {35 const { count, increment } = useCounter();36 return (37 <h1>{count}</h1>38 <button onClick={increment}>Increment</button>39 );40}41export default App;42import { renderHook, act } from '@testing-library/react-hooks';43import { useCounter } from './useCounter';44test('useCounter should work', () => {45 const { result } = renderHook(() => useCounter(), {46 wrapper: ({ children }) => (47 <CounterStepProvider step={5}>{children}</CounterStepProvider>48 });49 expect(result.current.count).toBe(0);50 act(() => {51 result.current.increment();52 });53 expect(result.current.count).toBe(5);54});55import { createContext, useContext } from 'react';56const CounterStepContext = createContext();57export function useCounter() {
Using AI Code Generation
1import { CounterStepContext } from "./CounterStepContext";2import { renderHook, act } from "@testing-library/react-hooks";3describe("CounterStepContext", () => {4 it("should return default step value of 1", () => {5 const { result } = renderHook(() => CounterStepContext());6 expect(result.current.step).toBe(1);7 });8 it("should increment the step value by 1", () => {9 const { result } = renderHook(() => CounterStepContext());10 act(() => {11 result.current.incrementStep();12 });13 expect(result.current.step).toBe(2);14 });15 it("should decrement the step value by 1", () => {16 const { result } = renderHook(() => CounterStepContext());17 act(() => {18 result.current.decrementStep();19 });20 expect(result.current.step).toBe(0);21 });22});23import { useContext } from "react";24import { CounterContext } from "./CounterContext";25import { CounterStepContext } from "./CounterStepContext";26export default function Counter() {27 const { count, incrementCount, decrementCount } = useContext(CounterContext);28 const { step, incrementStep, decrementStep } = useContext(CounterStepContext);29 return (30 <p data-testid="count">{count}</p>31 <p data-testid="step">{step}</p>32 <button data-testid="increment-count" onClick={incrementCount}>33 <button data-testid="decrement-count" onClick={decrementCount}>34 <button data-testid="increment-step" onClick={incrementStep}>35 <button data-testid="decrement-step" onClick={decrementStep}>36 );37}38import { render, screen } from "@testing-library/react";39import Counter from "./Counter";40describe("Counter", () => {41 it("should render count and step as 1", () => {42 render(<Counter />);43 expect(screen.getByTestId("count")).toHaveTextContent("1");44 expect(screen.getByTestId("step")).toHaveTextContent("1");45 });46 it("should increment
Using AI Code Generation
1import { renderHook } from '@testing-library/react-hooks';2import useCounter from './useCounter';3test('should increment counter', () => {4 const { result } = renderHook(() => useCounter());5 const [counter, increment] = result.current;6 expect(counter).toBe(0);7 increment();8 expect(result.current[0]).toBe(1);9});10import { useState } from 'react';11export default function useCounter() {12 const [counter, setCounter] = useState(0);13 const increment = () => {14 setCounter((prevCounter) => prevCounter + 1);15 };16 return [counter, increment];17}18import { renderHook, act } from '@testing-library/react-hooks';19import useCounter from './useCounter';20test('should increment counter', () => {21 const { result } = renderHook(() => useCounter());22 const [counter, increment] = result.current;23 expect(counter).toBe(0);24 act(() => increment());25 expect(result.current[0]).toBe(1);26});27import { useState } from 'react';28export default function useCounter() {29 const [counter, setCounter] = useState(0);30 const increment = () => {31 setCounter((prevCounter) => prevCounter + 1);32 };33 return [counter, increment];34}
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