61460c8601
search and replace ```\n< with ```\n\n< to ensure there's an empty line before closing tags
47 lines
1.9 KiB
Markdown
47 lines
1.9 KiB
Markdown
---
|
||
id: 587d824b367417b2b2512c47
|
||
title: Test if a Variable or Function is Defined
|
||
challengeType: 2
|
||
videoUrl: ''
|
||
localeTitle: 测试变量或函数是否定义
|
||
---
|
||
|
||
## Description
|
||
<section id="description">提醒一下，这个项目是基于<a href="https://glitch.com/#!/import/github/freeCodeCamp/boilerplate-mochachai/">Glitch</a>的以下入门项目构建的，或者是从<a href="https://github.com/freeCodeCamp/boilerplate-mochachai/">GitHub</a>克隆的。使用assert.isDefined（）或assert.isUndefined（）来使测试通过</section>
|
||
|
||
## Instructions
|
||
<section id="instructions">
|
||
</section>
|
||
|
||
## Tests
|
||
<section id='tests'>
|
||
|
||
```yml
|
||
tests:
|
||
- text: 所有测试都应该通过
|
||
testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=1').then(data => {assert.equal(data.state,'passed'); }, xhr => { throw new Error(xhr.responseText); })
|
||
- text: 选择正确的断言 - isDefined与isUndefined
|
||
testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=1').then(data => { assert.equal(data.assertions[0].method, 'isDefined', 'Null is not undefined'); }, xhr => { throw new Error(xhr.responseText); })
|
||
- text: 选择正确的断言 - isDefined与isUndefined
|
||
testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=1').then(data => { assert.equal(data.assertions[1].method, 'isUndefined', 'Undefined is undefined'); }, xhr => { throw new Error(xhr.responseText); })
|
||
- text: 选择正确的断言 - isDefined与isUndefined
|
||
testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=1').then(data => { assert.equal(data.assertions[2].method, 'isDefined', 'A string is not undefined'); }, xhr => { throw new Error(xhr.responseText); })
|
||
|
||
```
|
||
|
||
</section>
|
||
|
||
## Challenge Seed
|
||
<section id='challengeSeed'>
|
||
|
||
</section>
|
||
|
||
## Solution
|
||
<section id='solution'>
|
||
|
||
```js
|
||
// solution required
|
||
```
|
||
|
||
/section>
|