freeCodeCamp/curriculum/challenges/chinese/06-quality-assurance/quality-assurance-and-testing-with-chai/test-if-an-object-has-a-property.md

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
587d824e367417b2b2512c55	测试对象是否具有某个属性	2	301604	test-if-an-object-has-a-property

--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。

property 断言一个对象含有给定属性。

--instructions--

使用 assert.property() 或者 assert.notProperty() 让所有测试通过。

--hints--

不应有未通过的测试

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=15').then(
    (data) => {
      assert.equal(data.state, 'passed');
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

请选择正确的断言—property 或 notProperty

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=15').then(
    (data) => {
      assert.equal(
        data.assertions[0].method,
        'notProperty',
        'A car has not wings'
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

请选择正确的断言—property 或 notProperty

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=15').then(
    (data) => {
      assert.equal(
        data.assertions[1].method,
        'property',
        'planes have engines'
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

请选择正确的断言—property 或 notProperty

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=15').then(
    (data) => {
      assert.equal(data.assertions[2].method, 'property', 'Cars have wheels');
    },
    (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.
*/