198 lines
5.2 KiB
Plaintext
198 lines
5.2 KiB
Plaintext
:marked
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We write **unit tests** to explore and confirm the **behavior** of parts of our application.
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我们编写**单元测试**来探索并巩固应用程序中的**行为**部分。
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1. They **guard** against breaking existing code (“regressions”) when we make changes.
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1. 当我们做出修改时，它们会**守护**已有代码，防止其被破坏。
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1. They **clarify** what the code does both when used as intended and when faced with deviant conditions.
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1. 当我们正确使用代码和面对异常情况时，它们会让代码的用途更加**明晰**。
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1. They **reveal** mistakes in design and implementation. Tests force us to look at our code from many angles. When a part of our application seems hard to test,
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we may have discovered a design flaw, something we can cure now rather than later when it becomes expensive to fix.
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1. 它们会**揭露**我们设计和实现中的错误。测试会强迫我们从多种角度看代码。如果应用程序的一个部分看起来很难测试，这可能就意味着存在设计缺陷。
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我们可以立即修复它，而不用等到它变得不可收拾的那一天。
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.alert.is-important
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:marked
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These testing chapters were written before the Angular 2 Beta release
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and are scheduled for significant updates.
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Much of the material remains accurate and relevant but references to
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specific features of Angular 2 and the Angular 2 testing library
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may not be correct. Please bear with us.
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这些关于测试的章节写于Angular 2 Beta版发布之前，并且已经准备做重大更新。
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这些素材中很多都是准确而有意义的，但是所引用的Angular 2特有特性和测试库可能是不正确的。各位见谅。
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:marked
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Here is what we’ll learn in the unit testing chapters.
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下面是我们将在单元测试一章中学到的：
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1. Jasmine Testing 101
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1. Jasmine测试简介
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- setup to run Jasmine tests in the browser
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- 在浏览器中设置并准备运行Jasmine测试
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- basic Jasmine testing skills
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- 基本的Jasmine测试技能
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- write simple Jasmine tests in TypeScript
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- 用TypeScript写一个简单的Jasmine测试
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- debug a test in the browser
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- 在浏览器中调试一个测试
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1. The Application Under Test
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1. 待测试的应用程序
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1. Test a class
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1. 测试一个类
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- test a simple application class outside of Angular
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- 在Angular测试环境外测试简单的应用类
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- where to put the test file
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- 把测试文件放在哪里
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- load a test file with systemJS
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- 用SystemJS加载测试文件
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1. Test a Pipe
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1. 测试一个管道
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- test a simple Angular Pipe class
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- 测试一个简单的Angular管道类
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- add the Angular 2 library to the test harness
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- 把Angualr 2库添加到测试挽具(harness)中
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- load multiple test files using system.js
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- 使用SystemJS加载多个测试文件
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1. Test an Asynchronous Service
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1. 测试异步服务
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- test an asynchronous service class outside of Angular
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- 在Angular测试环境外测试异步服务
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- write a test plan in code
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- 用代码写一个测试计划
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- fake a dependency
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- 伪造一个依赖
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- master the `catch(fail).then(done)` pattern
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- 掌握`catch(fail).then(done)`模式
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- move setup to `beforeEach`
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- 把设置代码移入`beforeEach`
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- test when a dependency fails
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- 测试依赖失败时的情况
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- control async test timeout
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- 控制异步测试的超时时间
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1. The Angular Test Environment
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1. Angular测试环境
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- the Angular test environment and why we need help
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- Angular测试环境以及我们为什么需要它的帮助
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- add the Angular Test libraries to the test harness
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- 把Angular测试库加入测试挽具中
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- test the same async service using Angular Dependency Injection
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- 用Angular依赖注入测试同一个异步服务
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- reduce friction with test helpers
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- 减少和测试助手的摩擦
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- introducing spies
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- 引入侦探类
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1. Test a Component
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1. 测试组件
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- test the component outside of Angular
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- 在Angular测试环境外测试组件
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- mock the dependent asynchronous service
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- 模拟所依赖的异步服务
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- simulate interaction with the view (no DOM)
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- 仿真和视图(没有DOM)的互动
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- use a spy-promise to control asynchronous test flow
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- 使用侦探型承诺(spy-promise)来控制异步测试工作流
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1. Test a Component in the DOM
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1. 在DOM中测试组件
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- test the component inside the Angular test environment
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- 在Angular测试环境中测试组件
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- use the `TestComponentBuilder`
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- 使用`TestComponentBuilder`
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- more test helpers
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- 更多测试助手
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- interact with the DOM
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- 与DOM互动
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- bind to a mock dependent asynchronous service
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- 绑定到一个模拟的被依赖异步服务
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1. Run the tests with karma
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1. 用Karma运行这些测试
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It’s a big agenda. Fortunately, you can learn a little bit at a time and put each lesson to use.
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这是一个很大的日程表。幸运的是，我们可以一次只学一小点，然后把它们投入实战。
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