freeCodeCamp/curriculum/challenges/english/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	Test if an Object has a Property	2	301604	test-if-an-object-has-a-property

--description--

As a reminder, this project is being built upon the following starter project on Replit, or cloned from GitHub.

property asserts that the actual object has a given property.

--instructions--

Within tests/1_unit-tests.js under the test labelled #16 in the Objects suite, change each assert to either assert.property or assert.notProperty to make the test pass (should evaluate to true). Do not alter the arguments passed to the asserts.

--hints--

All tests should pass.

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

You should choose the correct method for the first assertion - property vs. 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);
    }
  );

You should choose the correct method for the second assertion - property vs. 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);
    }
  );

You should choose the correct method for the third assertion - property vs. 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.
*/