createFakeBrowserEvent = function() {
    var target = {
      href: 'SPF_HREF'
    };
    var evt = {
      metaKey: false,
      altKey: false,
      ctrlKey: false,
      shiftKey: false,
      target: target,
      defaultPrevented: false,
      preventDefault: function() { evt.defaultPrevented = true; }
    };
    return evt;
  }
@fileoverview Tests for navigation-related core functions.