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Test if an Object has a Property

curriculum/challenges/english/blocks/quality-assurance-and-testing-with-chai/587d824e367417b2b2512c55.md

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--description--

As a reminder, this project is being built upon the following starter project cloned from <a href="https://github.com/freeCodeCamp/boilerplate-mochachai/" target="_blank" rel="noopener noreferrer nofollow">GitHub</a>.

property asserts that the actual object has a given property.

--instructions--

Within tests/1_unit-tests.js under the test labeled #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.

js
const response = await fetch(code + '/_api/get-tests?type=unit&n=15');
if (!response.ok) {
  throw Error(await response.text());
}
const data = await response.json();
assert.equal(data.state, 'passed');

You should choose the correct method for the first assertion - property vs. notProperty.

js
const response = await fetch(code + '/_api/get-tests?type=unit&n=15');
if (!response.ok) {
  throw Error(await response.text());
}
const data = await response.json();
assert.equal(
  data.assertions[0].method,
  'notProperty',
  'A car has not wings'
);

You should choose the correct method for the second assertion - property vs. notProperty.

js
const response = await fetch(code + '/_api/get-tests?type=unit&n=15');
if (!response.ok) {
  throw Error(await response.text());
}
const data = await response.json();
assert.equal(
  data.assertions[1].method,
  'property',
  'planes have engines'
);

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

js
const response = await fetch(code + '/_api/get-tests?type=unit&n=15');
if (!response.ok) {
  throw Error(await response.text());
}
const data = await response.json();
assert.equal(data.assertions[2].method, 'property', 'Cars have wheels');