var testElement = component.find('testDiv').getElement();

    /*var elementBoundaries = {
        boundingRect: testElement.getBoundingClientRect.bind(window)
    };

var popoverEl = component.find('popover').getElement();
    var popoverBoundingBox = popoverEl.getBoundingClientRect();
    var popoverWidth = Math.ceil(popoverBoundingBox.width);
    var popoverHeight = popoverBoundingBox.height;