--- id: 587d824d367417b2b2512c53 title: 测试字符串是否包含子字符串 challengeType: 2 forumTopicId: 301597 dashedName: test-if-a-string-contains-a-substring --- # --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。 `include()` 和 `notInclude()` 同样可以用于字符串。 `include()` 用于断言字符串中包含某个子字符串。 # --instructions-- 在 `tests/1_unit-tests.js` 中,`Strings` 套件里标有 `#14` 的测试下,将每个 `assert` 改成 `assert.include` 或 `assert.notInclude` 方法,通过测试(结果应该返回 `true`)。 不要修改传给断言的参数。 # --hints-- 应通过所有测试。 ```js (getUserInput) => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=13').then( (data) => { assert.equal(data.state, 'passed'); }, (xhr) => { throw new Error(xhr.responseText); } ); ``` 应该为第一个断言选择正确的方法:`include` 或 `notInclude`。 ```js (getUserInput) => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=13').then( (data) => { assert.equal( data.assertions[0].method, 'include', "'Arrow' contains 'row'..." ); }, (xhr) => { throw new Error(xhr.responseText); } ); ``` 应该为第二个断言选择正确的方法:`include` 或 `notInclude`。 ```js (getUserInput) => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=13').then( (data) => { assert.equal( data.assertions[1].method, 'notInclude', "... a 'dart' doesn't contain a 'queue'" ); }, (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. */ ```