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freeCodeCamp/curriculum/challenges/chinese/06-quality-assurance/quality-assurance-and-testing-with-chai/test-for-truthiness.md
Oliver Eyton-Williams ee1e8abd87 feat(curriculum): restore seed + solution to Chinese (#40683)
* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2021-01-12 19:31:00 -07:00

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id, title, challengeType, videoUrl, dashedName
id title challengeType videoUrl dashedName
587d824b367417b2b2512c49 测试真实性 2 test-for-truthiness

--description--

请注意,本项目在 这个 Repl.it 项目 的基础上进行开发。你也可以从 GitHub 上克隆。

isTrue() 仅当给出的值为 Boolean 的 true 时可以通过测试;isNotTrue() 则会在给出除 true 以外的值时通过测试。

assert.isTrue(true, '可以通过,因为值的类型是布尔且值为 true');
assert.isTrue('true', '不能通过,因为值的类型是字符串);
assert.isTrue(1, '不过能通过因为值是数字 1');

isFalse()isNotFalse() 同样存在,表现与上面提到的两个方法类似。

--instructions--

使用 assert.isTrue()assert.isNotTrue() 让测试通过。

--hints--

不应有未通过的测试

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=3').then(
    (data) => {
      assert.equal(data.state, 'passed');
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

请选择正确的断言—isTrue 或 isNotTrue

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=3').then(
    (data) => {
      assert.equal(data.assertions[0].method, 'isTrue', 'True is true');
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

请选择正确的断言—isTrue 或 isNotTrue

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=3').then(
    (data) => {
      assert.equal(
        data.assertions[1].method,
        'isTrue',
        'Double negation of a truthy value is true'
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

请选择正确的断言—isTrue 或 isNotTrue

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=3').then(
    (data) => {
      assert.equal(
        data.assertions[2].method,
        'isNotTrue',
        'A truthy object is not true - neither is a false one'
      );
    },
    (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.
*/