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

Working with **CHAI**

Since the objects are different even though have the same properties But i have tried using the to.be.equal on clone() But failed

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

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

        // YOUR CODE HERE
        expect(clone(objectForCloning)).to.be.ok;
    })
})
clone.js
function clone (objectForCloning) {
    return Object.assign({}, objectForCloning)
}

module.exports = clone;

1 Answer

Steven Parker
Steven Parker
229,732 Points

You had the right idea the first time.

Since you're testing that a copy is valid, it makes sense that you would use "to.be.equal", but you may have omitted a few things:

  • you'll need to create a sample object to be cloned first
  • you'll need to perform the clone function on the sample object
  • your test will require an extra element in the chain to account for the properties inside the object
  • that extra element is what they were hinting you might want to check the documentation for