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freeCodeCamp/curriculum/challenges/chinese-traditional/06-quality-assurance/quality-assurance-and-testing-with-chai/test-if-a-value-is-an-array.md

1.9 KiB

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
587d824d367417b2b2512c50 測試某個值是否爲數組 2 301600 test-if-a-value-is-an-array

--description--

請注意,本項目在這個 Replit 項目的基礎上進行開發。你也可以從 GitHub 上克隆。

--instructions--

tests/1_unit-tests.js 中,Arrays 套件裏標有 #11 的測試下,將每個 assert 改成 assert.isArrayassert.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。

--hints--

不應有未通過的測試

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
    (data) => {
      assert.equal(data.state, 'passed');
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

請選擇正確的斷言——isArrayisNotArray

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
    (data) => {
      assert.equal(
        data.assertions[0].method,
        'isArray',
        'String.prototype.split() returns an Array'
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

請選擇正確的斷言——isArrayisNotArray

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=10').then(
    (data) => {
      assert.equal(
        data.assertions[1].method,
        'isNotArray',
        'Array.prototype.indexOf() returns a number'
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

--solutions--

/**
  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.
*/