backbone.computedfields marionette.collectionview unit test

test.js

describe('when ComputedFields initialized in Backbone.Model via Marionette.CollectionView', function () {

  var model, collection, collectionView;

  beforeEach(function () {
    var Model = Backbone.Model.extend({
      initialize: function () {
        this.computedFields = new Backbone.ComputedFields(this);
      },

      grossPrice: {
        get: function () {
          return 100;
        }
      }
    });

    var Collection = Backbone.Collection.extend({
      model: Model
    });

    var CollectionView = Marionette.CollectionView.extend({
      itemView: Marionette.ItemView
    });

    model = new Model({ netPrice: 100, vatRate: 5});
    collection = new Collection([model]);
    collectionView = new CollectionView({
      collection: collection
    });
  });

  it ('should be initialized', function () {
    expect(model.computedFields).to.exist;
    expect(model.computedFields._computedFields.length).to.equal(1);
  });

});