ts麻烦的单元测试

问题描述 投票:0回答:1

[尝试使用ts-jest对Firebase云功能进行单元测试,但是在进行简单测试时遇到了麻烦。

我为打字稿,打字和ts-jest配置安装了jest,但出现错误,提示未安装@types/jest

main.test.ts

/// <reference types="jest" />

import { database } from '../src/firestore';

test('Firestore is initialized', () => {
    expect(database).toBeDefined();
});

错误消息:找不到名称“ test”。您是否需要为测试运行程序安装类型定义?尝试npm i @types/jestnpm i @types/mocha .ts(2582)

version: @types/[email protected]

typescript ionic-framework google-cloud-functions ts-jest
1个回答
0
投票

很可能您的项目中的配置根本没有完成,我遵循了quickstart for firebase functions,部署到我的项目中,然后使用以下命令安装了依赖项:

npm install jest @ types / jest firebase-functions-test ts-jest -D

将测试脚本添加到我的package.json中

“ test”:“开玩笑--watchAll --verbose = false”

最后在我的项目中(在我的函数目录中)配置了jest(jest.config.js)

// this config includes typescript specific settings
// and if you're not using typescript, you should remove `transform` property
module.exports = {
    transform: {
        '^.+\\.tsx?$': 'ts-jest',
    },
    testRegex: 'src(/testing/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$',
    testPathIgnorePatterns: ['lib/', 'node_modules/'],
    moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
    testEnvironment: 'node',
    rootDir: 'src',
}

所有这些之后,我在function / src文件夹中创建了一个测试目录,并在测试中编写了一个像这样的简单测试

test("should pass", () => {
    // test test lol
    expect(1).toBe(1);
});

最后,如果对我使用的依赖项还有其他疑问,可以看看我的package.json文件。

{
  "name": "functions",
  "scripts": {
    "lint": "tslint --project tsconfig.json",
    "build": "tsc",
    "serve": "npm run build && firebase serve --only functions",
    "shell": "npm run build && firebase functions:shell",
    "start": "npm run shell",
    "deploy": "firebase deploy --only functions",
    "logs": "firebase functions:log",
    "test": "jest --watchAll --verbose=false"
  },
  "engines": {
    "node": "8"
  },
  "main": "lib/index.js",
  "dependencies": {
    "firebase-admin": "^8.6.0",
    "firebase-functions": "^3.3.0"
  },
  "devDependencies": {
    "@types/jest": "^24.0.19",
    "firebase-functions-test": "^0.1.6",
    "jest": "^24.9.0",
    "ts-jest": "^24.1.0",
    "tslint": "^5.12.0",
    "typescript": "^3.2.2"
  },
  "private": true
}
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