类型 'Matchers<HTMLElement>' 上不存在属性'toBeInTheDocument'

Question

正在尝试为组件库设置测试。我已经尝试了很多例子和所有类似的线程，但没有运气。

我的 setupTests.ts 文件正在正确加载(通过控制台.log证明(，并且该库似乎可用，就好像我添加import { toBeInTheDocument } from '@testing-library/jest-dom/matchers'并记录它存在toBeInTheDocument一样。

我也尝试了expect.extend({ toBeInTheDocument })选项，不幸的是，同样的错误仍然存在。

以下是我的文件，我缺少什么？谢谢

// package.json
"devDependencies": {
"@testing-library/jest-dom": "^5.11.0",
"@testing-library/react": "^10.4.3",
"@types/testing-library__jest-dom": "^5.9.1",
"@types/testing-library__react": "^10.2.0",
"@types/jest": "24.0.15",
"jest": "^26.1.0",
"ts-jest": "^26.1.1",
}

// jest.config.js
module.exports = {
preset: 'ts-jest',
// The root of your source code, typically /src
// `<rootDir>` is a token Jest substitutes
roots: ['<rootDir>/src'],
// Jest transformations -- this adds support for TypeScript
// using ts-jest
transform: {
'^.+\.tsx?$': 'ts-jest'
},
testEnvironment: 'jsdom',
// Runs special logic, such as cleaning up components
// when using React Testing Library and adds special
// extended assertions to Jest
setupFilesAfterEnv: ['<rootDir>/setupTests.ts'],
// // A map from regular expressions to module names that allow to stub out resources with a single module
moduleNameMapper: {
'@core': '<rootDir>/src/core',
'@hooks': '<rootDir>/src/hooks',
'@components': '<rootDir>/src/components'
},
// Test spec file resolution pattern
// Matches parent folder `__tests__` and filename
// should contain `test` or `spec`.
testRegex: '(/__tests__/.*|(\.|/)(test|spec))\.tsx?$',
// Module file extensions for importing
moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node']
}

// tsconfig
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"lib": ["esnext", "dom", "dom.iterable"],
"jsx": "react",
"types": ["react", "jest"],
"outDir": "./dist",
"baseUrl": "src",
"paths": {
"@core": ["core"],
"@core/*": ["core/*"],
"@components": ["components"],
"@components/*": ["components/*"],
"@hooks": ["hooks"],
"@hooks/*": ["hooks/*"]
},
"sourceMap": true,
"declaration": true,
"noImplicitAny": true,
"strict": true,
"esModuleInterop": true,
"allowSyntheticDefaultImports": true,
"experimentalDecorators": true
},
"include": ["src", "setupTests.ts"],
"exclude": ["dist", "node_modules"]
}

// myproject/setupTests.ts
import '@testing-library/jest-dom/extend-expect'

// src/components/container/__tests__/container.spec.tsx
import * as React from 'react'
import { render } from '@testing-library/react'
import { Container } from '../Container'
describe('<Container />', () => {
test('renders', async () => {
expect(true).toBe(true)
const { getByText } = render(<Container>mad</Container>)
// NOTE: not even my TS is happy
// Property 'toBeInTheDocument' does not exist on type 'Matchers<HTMLElement>'
expect(getByText('mad')).toBeIntheDocument()
})
})

错误：

FAIL  src/components/Container/__tests__/container.spec.tsx
<Container />
✕ renders (28 ms)
● <Container /> › renders
TypeError: expect(...).toBeIntheDocument is not a function

>EDIT：弗拉德的评论是正确的，我这边是愚蠢的错字。虽然测试现在运行没有任何错误，但VSCode仍然抱怨它。

Property 'toBeInTheDocument' does not exist on type 'Matchers<HTMLElement>'

我发现将"testing-library__jest-dom"添加到tsconfig"类型"似乎可以抑制错误，将鼠标悬停在类型为any的函数上，我无法跳转到函数的定义"找不到"toBeInTheDocument"的定义。

关于为什么类型定义没有加载的任何想法？

Answer 1

将"@types/jest"升级到最新的"26.0.3"为我解决了这个问题。我的项目是从基础项目复制的，并且已经包含@types/jest。在我初始化其他包时错过了这一点。

更新后的@types/jest对index.d.ts Matchers界面进行了更改，使其全部正常工作。