88 lines
2.4 KiB
Markdown
88 lines
2.4 KiB
Markdown
---
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id: 587d824b367417b2b2512c48
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title: 使用 Assert.isOk() 和 Assert.isNotOK()
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challengeType: 2
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forumTopicId: 301607
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dashedName: use-assert-isok-and-assert-isnotok
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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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`isOk()` 用來測試值是否爲真值，`isNotOk()` 用來測試值是否爲假值。
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可以在[過濾數組中的假值](https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-algorithm-scripting/falsy-bouncer)這個挑戰中瞭解更多關於真值和假值的信息。
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# --instructions--
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在 `tests/1_unit-tests.js` 中，`Basic Assertions` 套件中標註爲 `#3` 的測試下，修改每個 `assert` 爲 `assert.isOk()` 或 `assert.isNotOk()`，通過測試（結果應爲 `true`）。 不要修改傳入斷言的參數。
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# --hints--
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應通過所有測試。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=2').then(
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(data) => {
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assert.equal(data.state, 'passed');
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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```
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應該第一個斷言選擇正確的方法：`isOk` 或 `isNotOk`。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=2').then(
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(data) => {
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assert.equal(data.assertions[0].method, 'isNotOk', 'Null is falsy');
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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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應該第二個斷言選擇正確的方法：`isOk` 或 `isNotOk`。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=2').then(
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(data) => {
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assert.equal(data.assertions[1].method, 'isOk', 'A string is truthy');
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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```
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應該第三個斷言選擇正確的方法：`isOk` 或 `isNotOk`。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=2').then(
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(data) => {
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assert.equal(data.assertions[2].method, 'isOk', 'true is truthy');
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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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