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freeCodeCamp/curriculum/challenges/chinese/06-quality-assurance/quality-assurance-and-testing-with-chai/test-if-a-value-is-a-string.md
Oliver Eyton-Williams ee1e8abd87 feat(curriculum): restore seed + solution to Chinese (#40683)
* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2021-01-12 19:31:00 -07:00

94 lines
2.1 KiB
Markdown

---
id: 587d824d367417b2b2512c52
title: 测试某个值是否为字符串
challengeType: 2
forumTopicId: 301599
dashedName: test-if-a-value-is-a-string
---
# --description--
请注意,本项目在 [这个 Repl.it 项目](https://repl.it/github/freeCodeCamp/boilerplate-mochachai) 的基础上进行开发。你也可以从 [GitHub](https://repl.it/github/freeCodeCamp/boilerplate-mochachai) 上克隆。
`isString``isNotString` 断言一个值是否为字符串。
# --instructions--
使用 `assert.isString()``assert.isNotString()` 让所有测试通过。
# --hints--
不应有未通过的测试
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=12').then(
(data) => {
assert.equal(data.state, 'passed');
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
请选择正确的断言—isString 或 isNotString
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=12').then(
(data) => {
assert.equal(
data.assertions[0].method,
'isNotString',
'A float number is not a string'
);
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
请选择正确的断言—isString 或 isNotString
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=12').then(
(data) => {
assert.equal(
data.assertions[1].method,
'isString',
'environment vars are strings (or undefined)'
);
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
请选择正确的断言—isString 或 isNotString
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=12').then(
(data) => {
assert.equal(data.assertions[2].method, 'isString', 'A JSON is a string');
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
# --solutions--
```js
/**
Backend challenges don't need solutions,
because they would need to be tested against a full working project.
Please check our contributing guidelines to learn more.
*/
```