React Router V6 - useNavigate() 只能在 <Router> 组件的上下文中使用

Question

我已经安装了react-router-domV6。当我运行使用 Jest-Enzyme 进行非常基本的测试时，我遇到了上述错误：

expect(shallow(<CustomerListTable customers={mockCustomers} />).length).toEqual(1);

我已经遇到这个，但我已经在做提供的答案了。甚至尝试做 import { BrowserRouter as Router } from "react-router-dom";。我在这里错过了什么？

index.js

import React, { Suspense } from "react";
import ReactDOM from "react-dom";
import App from "./App";
import { StrictMode } from "react";
import { BrowserRouter } from "react-router-dom";
...

ReactDOM.render(
  <StrictMode>
          ...
            <BrowserRouter>
              <AuthProvider>
                <App />
              </AuthProvider>
            </BrowserRouter>
          ...
  </StrictMode>,
  document.getElementById("root")
);

App.js

import React from "react";
import { useRoutes } from "react-router-dom";
import Routing from "./routes";
import useAuth from "./hooks/useAuth";
import { CreateCustomTheme } from "./theme";
import { ThemeProvider } from "@mui/material/styles";
import CssBaseline from "@mui/material/CssBaseline";
import useSettings from "./hooks/useSettings";
import useScrollReset from "./hooks/useScrollReset";
import SplashScreen from "./components/splashScreen/SplashScreen";

const App = () => {
  const content = useRoutes(Routing());
  const { settings } = useSettings();
  const auth = useAuth();

  useScrollReset();

  const theme = CreateCustomTheme({
    direction: settings.direction,
    responsiveFontSizes: settings.responsiveFontSizes,
    roundedCorners: settings.roundedCorners,
    theme: settings.theme,
  });
  return (
    <ThemeProvider theme={theme}>
      <CssBaseline />
      {auth.isInitialized ? content : <SplashScreen />}
    </ThemeProvider>
  );
};

export default App;

Answer 1

您正在测试的 CustomerListTable 组件隔离似乎无法访问它在应用程序中正常呈现时所期望的路由上下文。在使用提供程序（redux、themes/styling、本地化、routing 等进行测试时需要包装组件是完全正常的... ) 提供组件正在访问的特定 React 上下文值，通常是通过 React 挂钩。

对于单元测试，您应该使用它期望的提供程序包装组件。

expect(shallow(
  <BrowserRouter>
    <CustomerListTable customers={mockCustomers} />
  </BrowserRouter>
).length).toEqual(1);

我已经有很长时间没有使用 Enzyme 了，所以我不确定 shallow 渲染是否仍然有效，但如果不能，则换成完整的 mount测试渲染器。

Answer 2

要解决此问题，您可以在对正在编写测试用例的文件进行所有导入之前像这样直接模拟 useNavigate()：-

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

React Router V6 - useNavigate() 只能在 <Router> 组件的上下文中使用

React Router V6 - useNavigate() may be used only in the context of a <Router> component

reactjs

jestjs

react-router

react-router-dom

enzyme