72 lines
3.2 KiB
Plaintext
72 lines
3.2 KiB
Plaintext
:marked
|
||
We write **unit tests** to explore and confirm the **behavior** of parts of our application.
|
||
|
||
我们编写**单元测试**来探索和确认我们应用程序的**行为**部分。
|
||
|
||
1. They **guard** against breaking existing code (“regressions”) when we make changes.
|
||
|
||
1. 当我们改变代码是，他们**守护**已有代码，以防被破坏。
|
||
1. They **clarify** what the code does both when used as intended and when faced with deviant conditions.
|
||
|
||
1. 在我们正确使用代码和面对异常情况时，他们**澄清**代码做什么。
|
||
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,
|
||
we may have discovered a design flaw, something we can cure now rather than later when it becomes expensive to fix.
|
||
|
||
1.他们**揭露**我们设计的执行的错误。测试强迫我们从多个角度看代码。当应用程序的一个部分看起来很难测试，我们可能会发现设计缺陷，这是我们可以立刻修复的，而不是等到它变的很难修复的时候。
|
||
|
||
.alert.is-important
|
||
:marked
|
||
These testing chapters were written before the Angular 2 Beta release
|
||
and are scheduled for significant updates.
|
||
Much of the material remains accurate and relevant but references to
|
||
specific features of Angular 2 and the Angular 2 testing library
|
||
may not be correct. Please bear with us.
|
||
|
||
这些测试的章节是
|
||
:marked
|
||
Here is what we’ll learn in the unit testing chapters.
|
||
|
||
1. Jasmine Testing 101
|
||
- setup to run Jasmine tests in the browser
|
||
- basic Jasmine testing skills
|
||
- write simple Jasmine tests in TypeScript
|
||
- debug a test in the browser
|
||
1. The Application Under Test
|
||
|
||
1. Test a class
|
||
- test a simple application class outside of Angular
|
||
- where to put the test file
|
||
- load a test file with systemJS
|
||
1. Test a Pipe
|
||
- test a simple Angular Pipe class
|
||
- add the Angular 2 library to the test harness
|
||
- load multiple test files using system.js
|
||
1. Test an Asynchronous Service
|
||
- test an asynchronous service class outside of Angular
|
||
- write a test plan in code
|
||
- fake a dependency
|
||
- master the `catch(fail).then(done)` pattern
|
||
- move setup to `beforeEach`
|
||
- test when a dependency fails
|
||
- control async test timeout
|
||
1. The Angular Test Environment
|
||
- the Angular test environment and why we need help
|
||
- add the Angular Test libraries to the test harness
|
||
- test the same async service using Angular Dependency Injection
|
||
- reduce friction with test helpers
|
||
- introducing spies
|
||
1. Test a Component
|
||
- test the component outside of Angular
|
||
- mock the dependent asynchronous service
|
||
- simulate interaction with the view (no DOM)
|
||
- use a spy-promise to control asynchronous test flow
|
||
1. Test a Component in the DOM
|
||
- test the component inside the Angular test environment
|
||
- use the `TestComponentBuilder`
|
||
- more test helpers
|
||
- interact with the DOM
|
||
- bind to a mock dependent asynchronous service
|
||
1. Run the tests with karma
|
||
|
||
It’s a big agenda. Fortunately, you can learn a little bit at a time and put each lesson to use.
|