  it('should remove old generated classes', () => {
        grid.cellClassNameGenerator = (column, model) => 'foo';
        grid.cellClassNameGenerator = (column, model) => 'bar';
        assertClassList(firstCell, ['bar']);
      });

      it('should provide column and model as parameters', () => {
        grid.cellClassNameGenerator = (column, model) =>
          model.index + ' ' + model.item.value + ' ' + column.header;
        assertClassList(getContainerCell(grid.$.items, 5, 1), ['5', 'foo5', 'col1']