78 lines
1.9 KiB
Markdown
78 lines
1.9 KiB
Markdown
---
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id: 587d824d367417b2b2512c50
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title: 测试某个值是否为数组
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challengeType: 2
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forumTopicId: 301600
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dashedName: test-if-a-value-is-an-array
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---
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# --description--
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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。
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# --instructions--
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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。
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# --hints--
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不应有未通过的测试
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
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(data) => {
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assert.equal(data.state, 'passed');
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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```
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请选择正确的断言——`isArray` 或 `isNotArray`。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
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(data) => {
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assert.equal(
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data.assertions[0].method,
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'isArray',
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'String.prototype.split() returns an Array'
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);
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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```
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请选择正确的断言——`isArray` 或 `isNotArray`。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
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(data) => {
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assert.equal(
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data.assertions[1].method,
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'isNotArray',
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'Array.prototype.indexOf() returns a number'
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);
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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```
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# --solutions--
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```js
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/**
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Backend challenges don't need solutions,
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because they would need to be tested against a full working project.
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Please check our contributing guidelines to learn more.
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*/
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```
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