freeCodeCamp/curriculum/challenges/chinese/06-quality-assurance/quality-assurance-and-testi.../use-the-double-equals-to-as...

2.6 KiB

id title challengeType forumTopicId dashedName
587d824b367417b2b2512c4a 用两个等号断言相等 2 301609 use-the-double-equals-to-assert-equality

--description--

请注意,本项目在这个 Replit 项目的基础上进行开发。你也可以从 GitHub 上克隆。

equal() 使用 == 比较对象。

--instructions--

tests/1_unit-tests.js 中,在 Equality 套件里标有 #5 的测试里,将每个 assert 改为 assert.equalassert.notEqual,通过测试(应该返回 true)。 不要修改传给断言的参数。

--hints--

应通过所有测试。

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').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:equalnotEqual

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').then(
    (data) => {
      assert.equal(
        data.assertions[0].method,
        'equal',
        'Numbers are coerced into strings with == '
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

应该为第二个断言选择正确的方法:equalnotEqual

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').then(
    (data) => {
      assert.equal(
        data.assertions[1].method,
        'notEqual',
        ' == compares object references'
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

应该为第三个断言选择正确的方法:equalnotEqual

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').then(
    (data) => {
      assert.equal(
        data.assertions[2].method,
        'equal',
        "6 * '2' is 12 ! It should be equal to '12'"
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

应该为第四个断言选择正确的方法:equalnotEqual

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').then(
    (data) => {
      assert.equal(data.assertions[3].method, 'notEqual', "6 + '2' is '62'...");
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

--solutions--

/**
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  Please check our contributing guidelines to learn more.
*/