beforeEach: function() {
        gridController = Ember.ArrayController.createWithMixins( SlGridController,
            {
                gridDefinition: {
                    options: {
                    },
                    columns: [
                        {
                            key: 'test1',
                            title: 'test 1',
                            sortable: true

                        },
                        {
                            key: 'test2',
                            title: 'test 2',
                            sortable: true
                        }
                    ]
                }
            } );
        sinon.spy( gridController, 'reorderColumn' );
        sinon.spy( gridController, 'resetColumns' );
        sinon.spy( gridController, 'loadGridDefinition' );
        sinon.spy( gridController, 'onColumnWidthsChange' );

    },