freeCodeCamp/curriculum/challenges/english/06-information-security-and-quality-assurance/quality-assurance-and-testing-with-chai/test-if-an-object-is-an-instance-of-a-constructor.english.md

id, title, challengeType

id	title	challengeType
587d824e367417b2b2512c57	Test if an Object is an Instance of a Constructor	2

Description

As a reminder, this project is being built upon the following starter project on Glitch, or cloned from GitHub. #instanceOf asserts that an object is an instance of a constructor. Use #instanceOf or #notInstanceOf where appropriate

Instructions

Tests

tests:
  - text: All tests should pass
    testString: 'getUserInput => $.get(getUserInput("url") + "/_api/get-tests?type=unit&n=17").then(data => { assert.equal(data.state,"passed"); }, xhr => { throw new Error(xhr.responseText); })'
  - text: Choose the right assertion - instanceOf vs. notInstanceOf
    testString: 'getUserInput => $.get(getUserInput("url") + "/_api/get-tests?type=unit&n=17").then(data => { assert.equal(data.assertions[0].method, "notInstanceOf", "myCar is not an instance of Plane"); }, xhr => { throw new Error(xhr.responseText); })'
  - text: Choose the right assertion - instanceOf vs. notInstanceOf
    testString: 'getUserInput => $.get(getUserInput("url") + "/_api/get-tests?type=unit&n=17").then(data => { assert.equal(data.assertions[1].method, "instanceOf", "airlinePlane is an instance of Plane"); }, xhr => { throw new Error(xhr.responseText); })'
  - text: Choose the right assertion - instanceOf vs. notInstanceOf
    testString: 'getUserInput => $.get(getUserInput("url") + "/_api/get-tests?type=unit&n=17").then(data => { assert.equal(data.assertions[2].method, "instanceOf", "everything is an Object in JavaScript..."); }, xhr => { throw new Error(xhr.responseText); })'
  - text: Choose the right assertion - instanceOf vs. notInstanceOf
    testString: 'getUserInput => $.get(getUserInput("url") + "/_api/get-tests?type=unit&n=17").then(data => { assert.equal(data.assertions[3].method, "notInstanceOf", "myCar.wheels is not an instance of String"); }, xhr => { throw new Error(xhr.responseText); })'

Challenge Seed

Solution

// solution required