Best JavaScript code snippet using testing-library-react-hooks
useMemo.test.ts
Source: useMemo.test.ts
1import { useMemo, useCallback } from "preact/hooks";2import { renderHook } from "../src";3describe("useCallback tests", () => {4 test("should handle useMemo hook", () => {5 const { result, rerender } = renderHook(6 (props) => {7 const { value } = props || { value: 0 };8 return useMemo(() => ({ value }), [value]);9 },10 {11 initialProps: {12 value: 1,13 },14 }15 );16 const value1 = result.current;17 expect(value1).toEqual({ value: 1 });18 rerender();19 const value2 = result.current;20 expect(value2).toEqual({ value: 1 });21 expect(value2).toBe(value1);22 rerender({ value: 2 });23 const value3 = result.current;24 expect(value3).toEqual({ value: 2 });25 expect(value3).not.toBe(value1);26 });27 test("should handle useCallback hook", () => {28 const { result, rerender } = renderHook(29 (props) => {30 const { value } = props || { value: 0 };31 const callback = () => ({ value });32 return useCallback(callback, [value]);33 },34 { initialProps: { value: 1 } }35 );36 const callback1 = result.current;37 const callbackValue1 = callback1?.();38 expect(callbackValue1).toEqual({ value: 1 });39 const callback2 = result.current;40 const callbackValue2 = callback2?.();41 expect(callbackValue2).toEqual({ value: 1 });42 expect(callback2).toBe(callback1);43 rerender({ value: 2 });44 const callback3 = result.current;45 const callbackValue3 = callback3?.();46 expect(callbackValue3).toEqual({ value: 2 });47 expect(callback3).not.toBe(callback1);48 });...
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 { callbackValue3 } from 'testing-library-react-hooks';2import { callbackValue3 } from 'testing-library-react-hooks';3import { callbackValue3 } from 'testing-library-react-hooks';4import { callbackValue3 } from 'testing-library-react-hooks';5import { callbackValue3 } from 'testing-library-react-hooks';6import { callbackValue3 } from 'testing-library-react-hooks';7import { callbackValue3 } from 'testing-library-react-hooks';8import { callbackValue3 } from 'testing-library-react-hooks';9import { callbackValue3 } from 'testing-library-react-hooks';10import { callbackValue3 } from 'testing-library-react-hooks';11import { callbackValue3 } from 'testing-library-react-hooks';12import { callbackValue3 } from 'testing-library-react-hooks';13import { callbackValue3 } from 'testing-library-react-hooks';14import { callbackValue3 } from 'testing-library-react-hooks';15import { callbackValue3 } from 'testing-library-react-hooks';
Using AI Code Generation
1import {callbackValue3} from 'testing-library-react-hooks'2import {callbackValue4} from 'testing-library-react-hooks'3import {callbackValue3} from 'testing-library-react-hooks'4import {callbackValue5} from 'testing-library-react-hooks'5import {callbackValue4} from 'testing-library-react-hooks'6import {callbackValue5} from 'testing-library-react-hooks'7import {callbackValue3} from 'testing-library-react-hooks'8import {callbackValue5} from 'testing-library-react-hooks'9import {callbackValue4} from 'testing-library-react-hooks'10import {callbackValue5} from 'testing-library-react-hooks'11import {callbackValue3} from 'testing-library-react-hooks'12import {callbackValue4} from 'testing-library-react-hooks'13import {callbackValue3} from 'testing-library-react-hooks'14import {callbackValue5} from 'testing-library-react-hooks'15import {callbackValue4} from 'testing-library-react-hooks'16import {callbackValue5} from 'testing-library-react-hooks'17import {callbackValue3} from 'testing-library-react
Using AI Code Generation
1import { callbackValue3 } from 'testing-library-react-hooks';2const { result, waitForNextUpdate } = callbackValue3(() => {3 const { result, waitForNextUpdate } = callbackValue3(() => {4 const { result, waitForNextUpdate } = callbackValue3(() => {5 return useMyHook();6 });7 return useMyHook();8 });9 return useMyHook();10});
Using AI Code Generation
1const { result, rerender } = renderHook(() => useMyHook());2const { result, rerender } = renderHook(() => useMyHook());3const { result, rerender } = renderHook(() => useMyHook());4const { result, rerender } = renderHook(() => useMyHook());5const { result, rerender } = renderHook(() => useMyHook());6const { result, rerender } = renderHook(() => useMyHook());7const { result, rerender } = renderHook(() => useMyHook());8const { result, rerender } = renderHook(() => useMyHook());9const { result, rerender } = renderHook(() => useMyHook());
Using AI Code Generation
1const { result, waitForNextUpdate } = await callbackValue3(2 () => useCounter(),3 (result) => result.current.count === 2,4 { initialProps: { initialCount: 1 } }5);6const { result, waitForNextUpdate } = await callbackValue3(7 () => useCounter(),8 (result) => result.current.count === 2,9 { initialProps: { initialCount: 1 } }10);11const { result, waitForNextUpdate } = await callbackValue3(12 () => useCounter(),13 (result) => result.current.count === 2,14 { initialProps: { initialCount: 1 } }15);16const { result, waitForNextUpdate } = await callbackValue3(17 () => useCounter(),18 (result) => result.current.count === 2,19 { initialProps: { initialCount: 1 } }20);
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