2018-10-10 22:03:03 +00:00
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---
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id: 587d824b367417b2b2512c4b
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2021-03-22 13:52:28 +00:00
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title: 用三个等号断言严格相等
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2018-10-10 22:03:03 +00:00
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challengeType: 2
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2020-09-17 10:50:23 +00:00
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forumTopicId: 301610
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2021-01-13 02:31:00 +00:00
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dashedName: use-the-triple-equals-to-assert-strict-equality
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2018-10-10 22:03:03 +00:00
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---
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2020-12-16 07:37:30 +00:00
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# --description--
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2021-05-12 15:55:58 +00:00
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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。
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2020-12-16 07:37:30 +00:00
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2021-03-22 13:52:28 +00:00
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`strictEqual()` 使用 `===` 比较对象。
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2020-12-16 07:37:30 +00:00
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# --instructions--
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2018-10-10 22:03:03 +00:00
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2021-03-22 13:52:28 +00:00
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在 `tests/1_unit-tests.js` 中,在 `Equality` 套件里标有 `#6` 的测试下,将每个 `assert` 改为 `assert.strictEqual` 或 `assert.notStrictEqual`,让测试通过(应该返回 `true`)。 不要修改传给断言的参数。
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2020-12-16 07:37:30 +00:00
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# --hints--
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2021-03-22 13:52:28 +00:00
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应通过所有测试。
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2020-12-16 07:37:30 +00:00
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=5').then(
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(data) => {
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assert.equal(data.state, 'passed');
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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2018-10-10 22:03:03 +00:00
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```
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2021-03-22 13:52:28 +00:00
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应该为第一个断言选择正确的方法:`strictEqual` 或 `notStrictEqual`。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=5').then(
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(data) => {
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assert.equal(
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data.assertions[0].method,
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'notStrictEqual',
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'with strictEqual the type must match'
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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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2018-10-10 22:03:03 +00:00
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2021-03-22 13:52:28 +00:00
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应该为第二个断言选择正确的方法:`strictEqual` 或 `notStrictEqual`。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=5').then(
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(data) => {
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assert.equal(data.assertions[1].method, 'strictEqual', '3*2 = 6...');
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},
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(xhr) => {
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throw new Error(xhr.responseText);
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}
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);
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```
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2021-03-22 13:52:28 +00:00
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应该为第三个断言选择正确的方法:`strictEqual` 或 `notStrictEqual`。
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2018-10-10 22:03:03 +00:00
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```js
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2020-12-16 07:37:30 +00:00
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=5').then(
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(data) => {
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assert.equal(
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data.assertions[2].method,
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'strictEqual',
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"6 * '2' is 12. Types match !"
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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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2018-10-10 22:03:03 +00:00
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```
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2020-08-13 15:24:35 +00:00
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2021-03-22 13:52:28 +00:00
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应该为第四个断言选择正确的方法:`strictEqual` 或 `notStrictEqual`。
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2020-12-16 07:37:30 +00:00
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=5').then(
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(data) => {
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assert.equal(
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data.assertions[3].method,
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'notStrictEqual',
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'Even if they have the same elements, the Arrays are notStrictEqual'
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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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2021-01-13 02:31:00 +00:00
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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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