Reactjs 使用react测试库测试useQuery

我正在尝试测试useQuery挂钩。测试（screen.getByText（/Loading…/）.not.toBeInTheDocument（）除外）似乎失败了。我只是一直在dom中加载文本，而不是标题。虽然已经分配了模拟解决方案/知道为什么会发生这种情况吗？整个目标是测试isLoading和iError。下面是代码

index.js

import React from "react";
import ReactDOM from "react-dom";
import App from "./App";
import { QueryClient, QueryClientProvider } from "react-query";

const queryClient = new QueryClient();

ReactDOM.render(
  <React.StrictMode>
    <QueryClientProvider client={queryClient}>
      <App />
    </QueryClientProvider>
  </React.StrictMode>,
  document.getElementById("root")
);

从“React”导入React；
从“react dom”导入react dom；
从“/App”导入应用程序；
从“react query”导入{QueryClient，QueryClient Provider}；
const queryClient=new queryClient（）；
ReactDOM.render(
,
document.getElementById（“根”）
);

应用程序

import React，{useState，Fragment}来自“React”；
从“react query”导入{useQuery}；
从“/api/index”导入{getManagers}”；
从“/components/CustomInputSelect”导入CustomInputSelect；
从“/utils/index”导入{processEmployeeData}；
导入“/App.scss”；
常量应用=（）=>{
const{isLoading，isError，error，data:employeeData}=useQuery(
“雇员”，
获取管理器
);
const updatedata=processEmployeeData（employeeData）；
如果（孤岛加载）{
返回装载。。。；
}
如果（isError）{
返回错误：{Error.message}；
}
返回(
我的头球

我的测试

import React from "react";
import { render, screen, act } from "@testing-library/react";
import "@testing-library/jest-dom/extend-expect";
import { QueryClient, QueryClientProvider } from "react-query";
import App from "./App";
import * as api from "./api/index";

const queryClient = new QueryClient();

const renderComponent = () => {
  render(
    <QueryClientProvider client={queryClient}>
      <App />
    </QueryClientProvider>
  );
};

test("renders CustomSelect component", () => {
  const getManagerFunc = jest
    .spyOn(api, "getManagers")
    .mockResolvedValue({ data: { data: [{ firstName: "John" }] } });
  renderComponent();
  expect(getManagerFunc).toHaveBeenCalledTimes(1);
  expect(screen.getByText(/Loading.../)).not.toBeInTheDocument();
});

从“React”导入React；
从“@testing library/react”导入{render，screen，act}”；
导入“@测试库/jest dom/extend expect”；
从“react query”导入{QueryClient，QueryClient Provider}；
从“/App”导入应用程序；
从“/api/index”导入*作为api；
const queryClient=new queryClient（）；
常量渲染组件=（）=>{
渲染(
);
};
测试（“呈现自定义选择组件”，（）=>{
const getManagerFunc=jest
.spyOn（api，“GetManager”）
.mockResolvedValue（{data:{data:[{firstName:“John”}]}）；
renderComponent（）；
期望（getManagerFunc）.已被调用的时间（1）；
expect（screen.getByText（/Loading…/）.not.toBeInTheDocument（）；
});

我可能正好有适合您的文章：

import React from "react";
import { render, screen, act } from "@testing-library/react";
import "@testing-library/jest-dom/extend-expect";
import { QueryClient, QueryClientProvider } from "react-query";
import App from "./App";
import * as api from "./api/index";

const queryClient = new QueryClient();

const renderComponent = () => {
  render(
    <QueryClientProvider client={queryClient}>
      <App />
    </QueryClientProvider>
  );
};

test("renders CustomSelect component", () => {
  const getManagerFunc = jest
    .spyOn(api, "getManagers")
    .mockResolvedValue({ data: { data: [{ firstName: "John" }] } });
  renderComponent();
  expect(getManagerFunc).toHaveBeenCalledTimes(1);
  expect(screen.getByText(/Loading.../)).not.toBeInTheDocument();
});