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所在平台: Udemy |
课程主页: https://www.udemy.com/course/mastering-jest-testing-with-typescript-and-nodejs/
课程评论：没有评论
课程名称：掌握Jest测试与TypeScript和Node.js 概述： 本课程是您全面掌握现代Node.js应用程序中使用Jest和TypeScript进行测试的指南。无论您是在测试实用函数还是处理复杂的服务错误，本课程通过实际示例和真实世界模式为您提供全面的学习体验。我们将从零开始设置Node.js项目，配置TypeScript和Jest，并编写您的第一个测试。您将学习测试文件的结构、命名约定，以及如何运行和调试特定测试。课程中将使用__tests__文件夹，并探索将测试与模块并排组织的方式。 您将掌握Jest的核心方法和模式： - 测试结构：describe()，it()，test() - 断言与匹配器：expect()，.toBe()，.toEqual()，.toHaveLength()，.toBeTruthy()，.toBeFalsy() - 测试概念：被测试系统(SUT)，安排-执行-断言(AAA) - 生命周期钩子：beforeEach()，afterEach()，beforeAll()，afterAll() 我们将为以下内容编写测试： - 实用函数：add()，subtract()，isEven()，createUser()，createJwtToken() - 类方法：Calculator.add()，subtract()，isPositive() 接下来，您将深入了解测试双重体： - Dummy，Stub，Fake，Mock，以及Spy - 使用jest.fn()，jest.mock()，jest.spyOn()，mockReturnValue()，mockResolvedValue()，mockImplementation() - Mock和Spy的重置方法：jest.clearAllMocks()，jest.resetAllMocks()，jest.restoreAllMocks() 高级错误处理包括： - 声明式风格：expect(...).rejects.toThrow() - 命令式风格：try/catch，fail('应该抛出错误') 企业级实践包括： - CustomError.throwError()，AppCodes，HttpCodes，CustomLogger 您将测试真实场景，包括： - Mocking服务（UserRepository，NewsletterService） - 验证错误响应和日志 - 测试无效输入和API失败案例 通过本课程的学习，您将能够自信地为任何Node.js TypeScript项目编写强健、干净且结构良好的测试。
This course is your complete guide to mastering testing in modern Node.js applications using Jest and TypeScript. Whether you're testing utility functions or handling complex service errors, this course walks you through everything with practical examples and real-world patterns.We begin with setting up a Node.js project from scratch, configuring TypeScript and Jest, and writing your first test. You'll learn the structure of test files, naming conventions, and how to run and debug specific tests. We'll use the __tests__ folder and also explore organizing tests next to modules.You'll work with core Jest methods and patterns:Test Structuring: describe(), it(), test()Assertions & Matchers: expect(),.toBe(),.toEqual(),.toHaveLength(),.toBeTruthy(),.toBeFalsy()Testing Concepts: System Under Test (SUT), Arrange-Act-Assert (AAA)Lifecycle Hooks: beforeEach(), afterEach(), beforeAll(), afterAll()We'll write tests for:Utility functions: add(), subtract(), isEven(), createUser(), createJwtToken()Class methods: Calculator.add(), subtract(), isPositive()Then you'll dive into test doubles:Dummy, Stub, Fake, Mock, and SpyUse of jest.fn(), jest.mock(), jest.spyOn(), mockReturnValue(), mockResolvedValue(), mockImplementation()Mock and spy reset methods: jest.clearAllMocks(), jest.resetAllMocks(), jest.restoreAllMocks()Advanced error handling includes:Declarative style: expect(...).rejects.toThrow()Imperative style: try/catch, fail('Should have thrown an error')Enterprise-level practices using:CustomError.throwError(), AppCodes, HttpCodes, CustomLoggerYou'll test real-world scenarios like:Mocking services (UserRepository, NewsletterService)Validating error responses and loggingTesting invalid inputs and API failure casesBy the end, you'll confidently write robust, clean, and well-structured tests for any Node.js TypeScript project.
