reaction jest mock useNavigate() [英] react jest mock useNavigate()

问题描述

"react-router-dom": "^6.0.0-alpha.5",

我几乎什么都试过了。

我只想模拟useNavigate()钩子中的这个navigate()调用。就这样。很简单。没有工作。

不，我不想使用Link。useNavigate在其他地方也以编程方式使用，我也想模拟它们

import React from 'react'
import { useNavigate } from "react-router-dom"

export const Detail = () => {
    const navigate = useNavigate();
    return (
        <span onClick={() => navigate('/some/specific/route')}>
            some Text
        </span>
    )
}

我已经尝试过这些：

jest.mock('react-router-dom', () => {
    // Require the original module to not be mocked...
    const originalModule = jest.requireActual('react-router-dom');

    return {
        __esModule: true,
        ...originalModule,
        // add your noops here
        useNavigate: jest.fn(() => 'bar')
    };
});

import * as ReactRouterDom from "react-router-dom";
...
// cannot redefine property
          Object.defineProperty(ReactRouterDom, 'useNavigate', {
              configurable: true,
              value: jest.fn(() => 'bar')
          });

// doesnt work
          jest.mock('react-router-dom', () => ({
              useNavigate: jest.fn(() => jest.fn),
          }))

// doesnt work
jest.spyOn(ReactRouterDom, 'useNavigate', 'get').mockReturnValue(jest.fn(() => jest.fn));

// doesnt work
jest.spyOn(ReactRouterDom, 'useNavigate').mockReturnValue(jest.fn(() => jest.fn));

// doesnt work
const mockedUsedNavigate = jest.fn();

jest.mock('react-router-dom', () => ({
   ...jest.requireActual('react-router-dom') as any,
  useNavigate: () => mockedUsedNavigate,
}));

所有这些都显示"Cannot redefine Property 'useNavigate'"或 useNavigate() may be used only in the context of a <Router> component.

说真的，任何其他导入模拟都可以正常工作。

我做错了什么？

我重新创建的最小项目数：https://github.com/zacharytyhacz/useNavigateBug

推荐答案

我有类似的问题，已通过this issue from react router

修复

我建议您按原样更改模拟：

// pay attention to write it at the top level of your file
const mockedUsedNavigate = jest.fn();

jest.mock('react-router-dom', () => ({
   ...jest.requireActual('react-router-dom') as any,
  useNavigate: () => mockedUsedNavigate,
}));


// your describe/it/test blocks go down there

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