78 lines
1.9 KiB
Markdown
78 lines
1.9 KiB
Markdown
---
|
|
id: 587d824d367417b2b2512c50
|
|
title: 测试某个值是否为数组
|
|
challengeType: 2
|
|
forumTopicId: 301600
|
|
dashedName: test-if-a-value-is-an-array
|
|
---
|
|
|
|
# --description--
|
|
|
|
请注意，本项目在[这个 Replit 项目](https://replit.com/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。
|
|
|
|
# --instructions--
|
|
|
|
在 `tests/1_unit-tests.js` 中，`Arrays` 套件里标有 `#11` 的测试下，将每个 `assert` 改成 `assert.isArray` 或 `assert.isNotArray` 方法，通过测试（结果应该返回 `true`）。 不要改变传入断言的参数。
|
|
|
|
# --hints--
|
|
|
|
不应有未通过的测试
|
|
|
|
```js
|
|
(getUserInput) =>
|
|
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
|
|
(data) => {
|
|
assert.equal(data.state, 'passed');
|
|
},
|
|
(xhr) => {
|
|
throw new Error(xhr.responseText);
|
|
}
|
|
);
|
|
```
|
|
|
|
请选择正确的断言——`isArray` 或 `isNotArray`。
|
|
|
|
```js
|
|
(getUserInput) =>
|
|
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
|
|
(data) => {
|
|
assert.equal(
|
|
data.assertions[0].method,
|
|
'isArray',
|
|
'String.prototype.split() returns an Array'
|
|
);
|
|
},
|
|
(xhr) => {
|
|
throw new Error(xhr.responseText);
|
|
}
|
|
);
|
|
```
|
|
|
|
请选择正确的断言——`isArray` 或 `isNotArray`。
|
|
|
|
```js
|
|
(getUserInput) =>
|
|
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
|
|
(data) => {
|
|
assert.equal(
|
|
data.assertions[1].method,
|
|
'isNotArray',
|
|
'Array.prototype.indexOf() returns a number'
|
|
);
|
|
},
|
|
(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.
|
|
*/
|
|
```
|