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JavaScript JavaScript Unit Testing Behavior Driven Development with Mocha & Chai A Testing Test!

John Collins
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John Collins
Full Stack JavaScript Techdegree Graduate 28,592 Points

Write a test spec that proves the clone function in clone.js returns an object where all properties match.

Can anyone provide a test solution to the code below? I've looked over the documentation for Chai and I am unable to find a solution.

clone_spec.js
var expect = require('chai').expect

describe('clone', function () {
    var clone = require('./clone.js')
    it('some description string', function () {

        // YOUR CODE HERE

    })
})
clone.js
function clone (objectForCloning) {
    return Object.assign({}, objectForCloning)
}

module.exports = clone

3 Answers

This one is weird it would only pass for me if I used the var keyword to declare the toClone variable. It fails if I use let or const.

But this should help:

var expect = require('chai').expect

describe('clone', function () {
    var clone = require('./clone.js')
    it('it clones an object', function () {
        var toClone = { person: "Gritty" }
        expect(clone(toClone)).to.eql(toClone)
    })
})

Copying and pasting the code that I posted into the code challenge passes the challenge. Try again, it shouldn't work for one person and not for another.