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

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

tetris.js

Source:tetris.js

...140        this.minos = this.minos.slice(1);141        if (this.minoCollides(this.mino)) {142            this.gameOver = true;143        }144        this.rerenderHook();145    }146    // returns whether a potential position would collide into the board147    minoCollides(mino) {148        return flattenMino(mino)149            .some(([x, y]) =>150                !inBounds(x, 0, 10) || y >= 20 || this.getPos([x, y]) !== null151            );152    }153    placeMino(mino) {154        // put mino on board155        for (const pos of flattenMino(this.mino)) {156            this.setPos(pos, this.mino.index);157        }158        // check for rows to be removed159        for (let i = this.board.length - 1; i >= 0; ) {160            const row = this.board[i];161            if (row.every(item => item !== null))  {162                // remove full rows163                for (let j = i; j > 0; --j) {164                    this.board[j] = this.board[j - 1];165                }166                this.board[0] = Array(10).fill(null);167            } else {168                --i;169            }170        }171    }172    rotateMino(isClockwise) {173        // multiplier for 90 deg. rotation174        const [mx, my] = isClockwise ? [-1, 1] : [1, -1];175        const rotated = copyMino(this.mino);176        rotated.shape = rotated.shape.map(([x, y]) => [y * mx, x * my]);177        if (!this.minoCollides(rotated)) {178            this.mino = rotated;179        }180        this.rerenderHook();181    }182    moveMino(dir) {183        const moved = copyMino(this.mino);184        moved.pos[0] += dir[0];185        moved.pos[1] += dir[1];186        if (!this.minoCollides(moved)) {187            this.mino = moved;188        }189        this.rerenderHook();190    }191    dropMino() {192        const dropped = copyMino(this.mino);193        dropped.pos[1] += 1;194        if (!this.minoCollides(dropped)) {195            this.mino = dropped;196            this.rerenderHook();197        } else {198            this.placeMino();199            this.requestMino();200        }201    }202    fastDropMino() {203        const dropped = copyMino(this.mino);204        do {205            dropped.pos[1] += 1;206        } while (!this.minoCollides(dropped));207        dropped.pos[1] -= 1;208        this.mino = dropped;209        this.placeMino();210        this.requestMino();...

usePropsThatChanged.test.js

Source:usePropsThatChanged.test.js

...9      initialProps: props,10    });11    const propsThatChanged = { key3: NEXT_MOCK_VALUE, key4: [NEXT_MOCK_VALUE] };12    const newComponentProps = { ...props, ...propsThatChanged };13    rerenderHook(newComponentProps);14    expect(result.current).toStrictEqual(propsThatChanged);15  });16  it('should return an empty object if no props changed', () => {17    const props = { key1: MOCK_VALUE, key2: { value: MOCK_VALUE }, key3: MOCK_VALUE, key4: [MOCK_VALUE] };18    const { result, rerender: rerenderHook } = renderHook((nextProps) => usePropsThatChanged(nextProps), {19      initialProps: props,20    });21    const newComponentProps = { ...props };22    rerenderHook(newComponentProps);23    expect(result.current).toStrictEqual({});24  });...

testHook.ts

Source:testHook.ts

...17      rerenderHook = rerender;18      firstCall = false;19      extra.waitForNextUpdate = waitForNextUpdate;20    } else {21      rerenderHook(args);22    }23    return hookResult.current;24  };25  return [useHook as T, extra] as const;...

Using AI Code Generation

1import { renderHook, act } from '@testing-library/react-hooks'2import { useCounter } from './useCounter'3test('should increment counter', () => {4  const { result } = renderHook(() => useCounter())5  act(() => result.current.increment())6  expect(result.current.count).toBe(1)7})8import { useState } from 'react'9export const useCounter = () => {10  const [count, setCount] = useState(0)11  const increment = () => setCount(count + 1)12  return { count, increment }13}

Using AI Code Generation

1import { act, renderHook } 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  it('should decrement counter', () => {12    const { result } = renderHook(() => useCounter());13    act(() => {14      result.current.decrement();15    });16    expect(result.current.count).toBe(-1);17  });18  it('should reset counter', () => {19    const { result, rerender } = renderHook(() => useCounter());20    act(() => {21      result.current.increment();22    });23    rerender();24    act(() => {25      result.current.reset();26    });27    expect(result.current.count).toBe(0);28  });29});30import { useState } from 'react';31const useCounter = () => {32  const [count, setCount] = useState(0);33  const increment = () => setCount((prevCount) => prevCount + 1);34  const decrement = () => setCount((prevCount) => prevCount - 1);35  const reset = () => setCount(0);36  return { count, increment, decrement, reset };37};38export default useCounter;39import React from 'react';40import useCounter from './useCounter';41const App = () => {42  const { count, increment, decrement, reset } = useCounter();43  return (44      <h1>Counter: {count}</h1>45      <button onClick={increment}>Increment</button>46      <button onClick={decrement}>Decrement</button>47      <button onClick={reset}>Reset</button>48  );49};50export default App;

Using AI Code Generation

1import { renderHook, act } from "@testing-library/react-hooks";2import useCounter from "./useCounter";3export const testHook = (initialProps) => {4  const { result } = renderHook(() => useCounter(initialProps));5  return result.current;6};7import { testHook } from "./useCounter.test";8import { testHook } from "./useCounter.test";9import { testHook } from "./useCounter.test";10import { testHook } from "./useCounter.test";11const { count, increment, decrement } = testHook({ initialCount: 0 });12test("should return the count", () => {13  expect(count).toBe(0);14});15test("should increment the count", () => {16  act(() => {17    increment();

Using AI Code Generation

1import { act } from 'react-dom/test-utils';2import { renderHook } from '@testing-library/react-hooks';3test('rerenderHook', () => {4  const { result, rerender } = renderHook(() => useCounter());5  expect(result.current.count).toBe(0);6  act(() => {7    result.current.increment();8  });9  expect(result.current.count).toBe(1);10  rerender();11  expect(result.current.count).toBe(1);12});13test('rerender', () => {14  const { result, rerender } = renderHook(() => useCounter());15  expect(result.current.count).toBe(0);16  act(() => {17    result.current.increment();18  });19  expect(result.current.count).toBe(1);20  rerender();21  expect(result.current.count).toBe(1);22});23import { act } from 'react-dom/test-utils';24import { renderHook } from '@testing-library/react-hooks';25test('rerenderHook', () => {26  const { result, rerender } = renderHook(() => useCounter());27  expect(result.current.count).toBe(0);28  act(() => {29    result.current.increment();30  });31  expect(result.current.count).toBe(1);32  rerender();33  expect(result.current.count).toBe(1);34});35test('rerender', () => {36  const { result, rerender } = renderHook(() => useCounter());37  expect(result.current.count).toBe(0);38  act(() => {39    result.current.increment();40  });41  expect(result.current.count).toBe(1);42  rerender();43  expect(result.current.count).toBe(1);44});45import { act } from 'react-dom/test-utils';46import { renderHook } from '@testing-library/react-hooks';47test('rerenderHook', () => {48  const { result, rerender } = renderHook(() => useCounter());49  expect(result.current.count).toBe(0

Using AI Code Generation

1import { renderHook, act } from '@testing-library/react-hooks';2import { useSearch } from './useSearch';3test('useSearch', () => {4  const { result, rerender } = renderHook(() => useSearch());5  const { search, setSearch } = result.current;6  expect(search).toBe('');7  act(() => {8    setSearch('test1');9  });10  expect(result.current.search).toBe('test1');11});12import { useState } from 'react';13export const useSearch = () => {14  const [search, setSearch] = useState('');15  return {16  };17};

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 { increment } = result.current;6  act(() => {7    increment();8  });9  const { count } = result.current;10  expect(count).toBe(1);11});12import { useState } from 'react';13export default function useCounter() {14  const [count, setCount] = useState(0);15  const increment = () => {16    setCount(count + 1);17  };18  return { count, increment };19}

Using AI Code Generation

1import { renderHook, act } from '@testing-library/react-hooks'2import useCounter from './useCounter'3test('should increment counter', () => {4  const { result } = renderHook(() => useCounter())5  act(() => {6    result.current.increment()7  })8  expect(result.current.count).toBe(1)9})10test('should decrement counter', () => {11  const { result } = renderHook(() => useCounter())12  act(() => {13    result.current.decrement()14  })15  expect(result.current.count).toBe(-1)16})17test('should reset counter', () => {18  const { result } = renderHook(() => useCounter())19  act(() => {20    result.current.increment()21    result.current.reset()22  })23  expect(result.current.count).toBe(0)24})25test('should set counter', () => {26  const { result } = renderHook(() => useCounter())27  act(() => {28    result.current.set(5)29  })30  expect(result.current.count).toBe(5)31})32import { useState } from 'react'33const useCounter = () => {34  const [count, setCount] = useState(0)35  const increment = () => setCount(count + 1)36  const decrement = () => setCount(count - 1)37  const reset = () => setCount(0)38  const set = (n) => setCount(n)39  return { count, increment, decrement, reset, set }40}41import React from 'react'42import useCounter from './useCounter'43const App = () => {44  const { count, increment, decrement, reset, set } = useCounter()45  return (46      <h1>{count}</h1>47      <button onClick={increment}>+</button>48      <button onClick={decrement}>-</button>49      <button onClick={reset}>Reset</button>50      <button onClick={() => set(10)}>Set 10</button>51}52import React from 'react'53import ReactDOM from 'react-dom'54import App from './App'55ReactDOM.render(<App />, document.getElementById('root'))56import { render, screen } from

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