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

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

asyncHook.test.ts

Source:asyncHook.test.ts

...22    return value;23  };24  test("should wait for next update", async () => {25    const { result, waitForNextUpdate } = renderHook(() =>26      useSequence("first", "second")27    );28    expect(result.current).toBe("first");29    await waitForNextUpdate();30    expect(result.current).toBe("second");31  });32  test("should wait for multiple updates", async () => {33    const { result, waitForNextUpdate } = renderHook(() =>34      useSequence("first", "second", "third")35    );36    expect(result.current).toBe("first");37    await waitForNextUpdate();38    expect(result.current).toBe("second");39    await waitForNextUpdate();40    expect(result.current).toBe("third");41  });42  test("should resolve all when updating", async () => {43    const { result, waitForNextUpdate } = renderHook(() =>44      useSequence("first", "second")45    );46    expect(result.current).toBe("first");47    await Promise.all([48      waitForNextUpdate(),49      waitForNextUpdate(),50      waitForNextUpdate(),51    ]);52    expect(result.current).toBe("second");53  });54  test("should reject if timeout exceeded when waiting for next update", async () => {55    const { result, waitForNextUpdate } = renderHook(() =>56      useSequence("first", "second")57    );58    expect(result.current).toBe("first");59    await expect(waitForNextUpdate({ timeout: 10 })).rejects.toThrow(60      Error("Timed out in waitForNextUpdate after 10ms.")61    );62  });63  test("should wait for expectation to pass", async () => {64    const { result, wait } = renderHook(() =>65      useSequence("first", "second", "third")66    );67    expect(result.current).toBe("first");68    let complete = false;69    await wait(() => {70      expect(result.current).toBe("third");71      complete = true;72    });73    expect(complete).toBe(true);74  });75  test("should not hang if expectation is already passing", async () => {76    const { result, wait } = renderHook(() => useSequence("first", "second"));77    expect(result.current).toBe("first");78    let complete = false;79    await wait(() => {80      expect(result.current).toBe("first");81      complete = true;82    });83    expect(complete).toBe(true);84  });85  test("should reject if callback throws error", async () => {86    const { result, wait } = renderHook(() =>87      useSequence("first", "second", "third")88    );89    expect(result.current).toBe("first");90    await expect(91      wait(92        () => {93          if (result.current === "second") {94            throw new Error("Something Unexpected");95          }96          return result.current === "third";97        },98        {99          suppressErrors: false,100        }101      )102    ).rejects.toThrow(Error("Something Unexpected"));103  });104  test("should reject if callback immediately throws error", async () => {105    const { result, wait } = renderHook(() =>106      useSequence("first", "second", "third")107    );108    expect(result.current).toBe("first");109    await expect(110      wait(111        () => {112          throw new Error("Something Unexpected");113        },114        {115          suppressErrors: false,116        }117      )118    ).rejects.toThrow(Error("Something Unexpected"));119  });120  test("should wait for truthy value", async () => {121    const { result, wait } = renderHook(() =>122      useSequence("first", "second", "third")123    );124    expect(result.current).toBe("first");125    await wait(() => result.current === "third");126    expect(result.current).toBe("third");127  });128  // FIXME129  test.skip("should reject if timeout exceeded when waiting for expectation to pass", async () => {130    const { result, wait } = renderHook(() =>131      useSequence("first", "second", "third")132    );133    expect(result.current).toBe("first");134    await expect(135      wait(136        () => {137          expect(result.current).toBe("third");138        },139        { timeout: 75 }140      )141    ).rejects.toThrow(Error("Timed out in wait after 75ms."));142  });143  test("should wait for value to change", async () => {144    const { result, waitForValueToChange } = renderHook(() =>145      useSequence("first", "second", "third")146    );147    expect(result.current).toBe("first");148    await waitForValueToChange(() => result.current === "third");149    expect(result.current).toBe("third");150  });151  test("should reject if timeout exceeded when waiting for value to change", async () => {152    const { result, waitForValueToChange } = renderHook(() =>153      useSequence("first", "second", "third")154    );155    expect(result.current).toBe("first");156    await expect(157      waitForValueToChange(() => result.current === "third", {158        timeout: 75,159      })160    ).rejects.toThrow(Error("Timed out in waitForValueToChange after 75ms."));161  });162  test("should reject if selector throws error", async () => {163    const { result, waitForValueToChange } = renderHook(() =>164      useSequence("first", "second")165    );166    expect(result.current).toBe("first");167    await expect(168      waitForValueToChange(() => {169        if (result.current === "second") {170          throw new Error("Something Unexpected");171        }172        return result.current;173      })174    ).rejects.toThrow(Error("Something Unexpected"));175  });176  test("should not reject if selector throws error and suppress errors option is enabled", async () => {177    const { result, waitForValueToChange } = renderHook(() =>178      useSequence("first", "second", "third")179    );180    expect(result.current).toBe("first");181    await waitForValueToChange(182      () => {183        if (result.current === "second") {184          throw new Error("Something Unexpected");185        }186        return result.current === "third";187      },188      { suppressErrors: true }189    );190    expect(result.current).toBe("third");191  });192});

useEffect-asyncHook.test.js

Source:useEffect-asyncHook.test.js

...20    }, [...values]);21    return value;22  };23  test('should wait for next update', async () => {24    const {result, waitForNextUpdate} = renderHook(() => useSequence('first', 'second'));25    expect(result.current).toBe('first');26    await waitForNextUpdate();27    expect(result.current).toBe('second');28  });29  test('should wait for multiple updates', async () => {30    const {result, waitForNextUpdate} = renderHook(() => useSequence('first', 'second', 'third'));31    expect(result.current).toBe('first');32    await waitForNextUpdate();33    expect(result.current).toBe('second');34    await waitForNextUpdate();35    expect(result.current).toBe('third');36  });37  test('should resolve all when updating', async () => {38    const {result, waitForNextUpdate} = renderHook(() => useSequence('first', 'second'));39    expect(result.current).toBe('first');40    await Promise.all([waitForNextUpdate(), waitForNextUpdate(), waitForNextUpdate()]);41    expect(result.current).toBe('second');42  });43  test('should reject if timeout exceeded when waiting for next update', async () => {44    const {result, waitForNextUpdate} = renderHook(() => useSequence('first', 'second'));45    expect(result.current).toBe('first');46    await expect(waitForNextUpdate({timeout: 10})).rejects.toThrow(47      Error('Timed out in waitForNextUpdate after 10ms.'),48    );49  });50  test('should wait for expectation to pass', async () => {51    const {result, wait} = renderHook(() => useSequence('first', 'second', 'third'));52    expect(result.current).toBe('first');53    let complete = false;54    await wait(() => {55      expect(result.current).toBe('third');56      complete = true;57    });58    expect(complete).toBe(true);59  });60  test('should not hang if expectation is already passing', async () => {61    const {result, wait} = renderHook(() => useSequence('first', 'second'));62    expect(result.current).toBe('first');63    let complete = false;64    await wait(() => {65      expect(result.current).toBe('first');66      complete = true;67    });68    expect(complete).toBe(true);69  });70  test('should reject if callback throws error', async () => {71    const {result, wait} = renderHook(() => useSequence('first', 'second', 'third'));72    expect(result.current).toBe('first');73    await expect(74      wait(75        () => {76          if (result.current === 'second') {77            throw new Error('Something Unexpected');78          }79          return result.current === 'third';80        },81        {82          suppressErrors: false,83        },84      ),85    ).rejects.toThrow(Error('Something Unexpected'));86  });87  test('should reject if callback immediately throws error', async () => {88    const {result, wait} = renderHook(() => useSequence('first', 'second', 'third'));89    expect(result.current).toBe('first');90    await expect(91      wait(92        () => {93          throw new Error('Something Unexpected');94        },95        {96          suppressErrors: false,97        },98      ),99    ).rejects.toThrow(Error('Something Unexpected'));100  });101  test('should wait for truthy value', async () => {102    const {result, wait} = renderHook(() => useSequence('first', 'second', 'third'));103    expect(result.current).toBe('first');104    await wait(() => result.current === 'third');105    expect(result.current).toBe('third');106  });107  test('should reject if timeout exceeded when waiting for expectation to pass', async () => {108    const {result, wait} = renderHook(() => useSequence('first', 'second', 'third'));109    expect(result.current).toBe('first');110    await expect(111      wait(112        () => {113          expect(result.current).toBe('third');114        },115        {timeout: 75},116      ),117    ).rejects.toThrow(Error('Timed out in wait after 75ms.'));118  });119  test('should wait for value to change', async () => {120    const {result, waitForValueToChange} = renderHook(() => useSequence('first', 'second', 'third'));121    expect(result.current).toBe('first');122    await waitForValueToChange(() => result.current === 'third');123    expect(result.current).toBe('third');124  });125  test('should reject if timeout exceeded when waiting for value to change', async () => {126    const {result, waitForValueToChange} = renderHook(() => useSequence('first', 'second', 'third'));127    expect(result.current).toBe('first');128    await expect(129      waitForValueToChange(() => result.current === 'third', {130        timeout: 75,131      }),132    ).rejects.toThrow(Error('Timed out in waitForValueToChange after 75ms.'));133  });134  test('should reject if selector throws error', async () => {135    const {result, waitForValueToChange} = renderHook(() => useSequence('first', 'second'));136    expect(result.current).toBe('first');137    await expect(138      waitForValueToChange(() => {139        if (result.current === 'second') {140          throw new Error('Something Unexpected');141        }142        return result.current;143      }),144    ).rejects.toThrow(Error('Something Unexpected'));145  });146  test('should not reject if selector throws error and suppress errors option is enabled', async () => {147    const {result, waitForValueToChange} = renderHook(() => useSequence('first', 'second', 'third'));148    expect(result.current).toBe('first');149    await waitForValueToChange(150      () => {151        if (result.current === 'second') {152          throw new Error('Something Unexpected');153        }154        return result.current === 'third';155      },156      {suppressErrors: true},157    );158    expect(result.current).toBe('third');159  });...

Using AI Code Generation

1import { useSequence } from '@testing-library/react-hooks';2import { renderHook } from '@testing-library/react-hooks';3import { useCounter } from './useCounter';4describe('useCounter', () => {5  it('should increment the counter', () => {6    const { result } = renderHook(() => useCounter());7    const [count, increment] = result.current;8    expect(count).toBe(0);9    increment();10    expect(count).toBe(1);11  });12  it('should increment the counter using useSequence', () => {13    const { result } = renderHook(() => useCounter());14    const [count, increment] = result.current;15    useSequence(() => {16      expect(count).toBe(0);17      increment();18      expect(count).toBe(1);19    });20  });21});22import { useSequence } from '@testing-library/react-hooks';23import { renderHook } from '@testing-library/react-hooks';24import { useCounter } from './useCounter';25describe('useCounter', () => {26  it('should increment the counter', () => {27    const { result } = renderHook(() => useCounter());28    const [count, increment] = result.current;29    expect(count).toBe(0);30    increment();31    expect(count).toBe(1);32  });33  it('should increment the counter using useSequence', () => {34    const { result } = renderHook(() => useCounter());35    const [count, increment] = result.current;36    useSequence(() => {37      expect(count).toBe(0);38      increment();39      expect(count).toBe(1);40    });41  });42});43import { useSequence } from '@testing-library/react-hooks';44import { renderHook } from '@testing-library/react-hooks';45import { useCounter } from './useCounter';46describe('useCounter', () => {47  it('should increment the counter', () => {48    const { result } = renderHook(() => useCounter());49    const [count, increment] = result.current;50    expect(count).toBe(0);51    increment();52    expect(count).toBe(1);53  });54  it('should increment the counter using useSequence', () => {55    const { result } = renderHook(() => useCounter());

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 increment counter by 2', () => {26  const { result } = renderHook(() => useCounter());27  act(() => {28    result.current.incrementByTwo();29  });30  expect(result.current.count).toBe(2);31});32test('should decrement counter by 2', () => {33  const { result } = renderHook(() => useCounter());34  act(() => {35    result.current.decrementByTwo();36  });37  expect(result.current.count).toBe(-2);38});39test('should increment counter by 3', () => {40  const { result } = renderHook(() => useCounter());41  act(() => {42    result.current.incrementByThree();43  });44  expect(result.current.count).toBe(3);45});46test('should decrement counter by 3', () => {47  const { result } = renderHook(() => useCounter());48  act(() => {49    result.current.decrementByThree();50  });51  expect(result.current.count).toBe(-3);52});53test('should increment counter by 4', () => {54  const { result } = renderHook(() => useCounter());55  act(() => {56    result.current.incrementByFour();57  });58  expect(result.current.count).toBe(4);59});60test('should decrement counter by 4', () => {61  const { result } = renderHook(() => useCounter());62  act(() => {63    result.current.decrementByFour();64  });65  expect(result.current.count).toBe(-4);66});67test('should increment counter by 5', () => {68  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  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});19import { useState } from "react";20export default function useCounter() {21  const [count, setCount] = useState(0);22  const increment = () => {23    setCount(count + 1);24  };25  const decrement = () => {26    setCount(count - 1);27  };28  return {29  };30}31{32  "dependencies": {33  },34  "scripts": {35  },36  "eslintConfig": {37  },38  "browserslist": {39  }40}41import React from "react";42import { render } from "@testing-library/react";43import App from "./App";

Using AI Code Generation

1import { renderHook } from '@testing-library/react-hooks';2import { useSequence } from '../src/useSequence';3test('should return the sequence', () => {4  const { result } = renderHook(() => useSequence([1, 2, 3]));5  expect(result.current).toBe(1);6});7import { renderHook } from '@testing-library/react-hooks';8import { useSequence } from '../src/useSequence';9test('should return the sequence', () => {10  const { result } = renderHook(() => useSequence([1, 2, 3]));11  expect(result.current).toBe(1);12});13import { renderHook } from '@testing-library/react-hooks';14import { useSequence } from '../src/useSequence';15test('should return the sequence', () => {16  const { result } = renderHook(() => useSequence([1, 2, 3]));17  expect(result.current).toBe(1);18});19import { renderHook } from '@testing-library/react-hooks';20import { useSequence } from '../src/useSequence';21test('should return the sequence', () => {22  const { result } = renderHook(() => useSequence([1, 2, 3]));23  expect(result.current).toBe(1);24});25import { renderHook } from '@testing-library/react-hooks';26import { useSequence } from '../src/useSequence';27test('should return the sequence', () => {28  const { result } = renderHook(() => useSequence([1, 2, 3]));29  expect(result.current).toBe(1);30});31import { renderHook } from '@testing-library/react-hooks';32import { useSequence } from '../src/useSequence';33test('should return the sequence', () => {34  const { result } = renderHook(() => useSequence([1, 2, 3]));35  expect(result.current).toBe(1);36});

Using AI Code Generation

1import { act, renderHook } 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.increment()22    result.current.reset()23  })24  expect(result.current.count).toBe(0)25})26test('should increment counter by 2', () => {27  const { result } = renderHook(() => useCounter(2))28  act(() => {29    result.current.increment()30  })31  expect(result.current.count).toBe(2)32})33test('should decrement counter by 2', () => {34  const { result } = renderHook(() => useCounter(2))35  act(() => {36    result.current.decrement()37  })38  expect(result.current.count).toBe(-2)39})40import { useState } from 'react'41export const useCounter = (initialCount = 0) => {42  const [count, setCount] = useState(initialCount)43  const increment = () => {44    setCount(count + 1)45  }46  const decrement = () => {47    setCount(count - 1)48  }49  const reset = () => {50    setCount(initialCount)51  }52  return { count, increment, decrement, reset }53}54export declare const useCounter: (initialCount?: number | undefined) => {55  increment: () => void56  decrement: () => void57  reset: () => void58}59import '@testing-library/jest-dom'60import '@testing-library/react-hooks'61declare module '@testing-library/react-hooks' {

Using AI Code Generation

1import { renderHook, act } from '@testing-library/react-hooks';2import { useSequence } from '../hooks/useSequence';3describe('useSequence', () => {4  test('should return the value of the sequence', () => {5    const { result } = renderHook(() => useSequence(1, 2, 3));6    expect(result.current).toBe(1);7  });8  test('should return the next value of the sequence', () => {9    const { result } = renderHook(() => useSequence(1, 2, 3));10    act(() => {11      result.current.next();12    });13    expect(result.current).toBe(2);14  });15  test('should return the previous value of the sequence', () => {16    const { result } = renderHook(() => useSequence(1, 2, 3));17    act(() => {18      result.current.next();19      result.current.next();20      result.current.previous();21    });22    expect(result.current).toBe(2);23  });24  test('should return the first value of the sequence', () => {25    const { result } = renderHook(() => useSequence(1, 2, 3));26    act(() => {27      result.current.next();28      result.current.next();29      result.current.first();30    });31    expect(result.current).toBe(1);32  });33  test('should return the last value of the sequence', () => {34    const { result } = renderHook(() => useSequence(1, 2, 3));35    act(() => {36      result.current.next();37      result.current.next();38      result.current.last();39    });40    expect(result.current).toBe(3);41  });42  test('should return the first value of the sequence', () => {43    const { result } = renderHook(() => useSequence(1, 2, 3));44    act(() => {45      result.current.next();46      result.current.next();47      result.current.first();48    });49    expect(result.current).toBe(1);50  });51  test('should return the last value of the sequence', () => {52    const { result } = renderHook(() => useSequence(1, 2, 3));53    act(() => {54      result.current.next();55      result.current.next();56      result.current.last();57    });58    expect(result.current).toBe(3);59  });60  test('should return the first value of the sequence', () => {

Using AI Code Generation

1import { renderHook } from '@testing-library/react-hooks';2import { useSequence } from '../src/useSequence';3const { result, waitForNextUpdate } = renderHook(() => useSequence(1000));4import { renderHook } from '@testing-library/react-hooks';5import { useSequence } from '../src/useSequence';6const { result, waitForNextUpdate } = renderHook(() => useSequence(1000));7import { renderHook } from '@testing-library/react-hooks';8import { useSequence } from '../src/useSequence';9const { result, waitForNextUpdate } = renderHook(() => useSequence(1000));10import { renderHook } from '@testing-library/react-hooks';11import { useSequence } from '../src/useSequence';12const { result, waitForNextUpdate } = renderHook(() => useSequence(1000));13import { renderHook } from '@testing-library/react-hooks';14import { useSequence } from '../src/useSequence';15const { result, waitForNextUpdate } = renderHook(() => useSequence(1000));16import { renderHook } from '@testing-library/react-hooks';17import { useSequence } from '../src/useSequence';18const { result, waitForNextUpdate } = renderHook(() => useSequence(1000));19import { renderHook } from '@testing-library/react-hooks';20import { useSequence } from '../src/useSequence';21const { result, waitForNextUpdate } = renderHook(() => useSequence(1000));

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.