78 lines
1.9 KiB
Markdown
78 lines
1.9 KiB
Markdown
---
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id: 587d824d367417b2b2512c50
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title: 測試某個值是否爲數組
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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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請注意，本項目在[這個 Replit 項目](https://replit.com/github/freeCodeCamp/boilerplate-mochachai)的基礎上進行開發。你也可以從 [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` 套件裏標有 `#11` 的測試下，將每個 `assert` 改成 `assert.isArray` 或 `assert.isNotArray` 方法，通過測試（結果應該返回 `true`）。 不要改變傳入斷言的參數。
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# --hints--
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不應有未通過的測試
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
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(data) => {
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assert.equal(data.state, 'passed');
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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```
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請選擇正確的斷言——`isArray` 或 `isNotArray`。
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```js
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(getUserInput) =>
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$.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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請選擇正確的斷言——`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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