freeCodeCamp/test-if-an-object-is-an-instance-of-a-constructor.english.md at 6b3c61c73757d6ffe2ea332cbc44dad7948d1175

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Kristofer Koishigawa 6b3c61c737 feat: update backend project links (#39314 )

* feat: update backend project links

Replace solution and remix Glitch links with equivalent Repl.it links in backend projects/challenges and intro pages.

* fix: link and Repl.it casing

* fix: update mention of glitch in testing challenge

* Apply suggestions from code review

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

Co-authored-by: Mrugesh Mohapatra <1884376+raisedadead@users.noreply.github.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

2020-08-17 14:38:16 -07:00

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id, title, challengeType, isHidden, forumTopicId

id	title	challengeType	isHidden	forumTopicId
587d824e367417b2b2512c57	Test if an Object is an Instance of a Constructor	2	false	301605

Description

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

Instructions

Use assert.instanceOf() or assert.notInstanceOf() to make the tests pass.

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: You should 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: You should 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: You should 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: You should 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

/**
  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.
*/

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