(column, model) => {}).not.to.throw(Error);
      });

      it('should clear generated classes with falsy return value', () => {
        grid.cellClassNameGenerator = (column, model) => 'foo';
        grid.cellClassNameGenerator = (column, model) => {};
        assertClassList(firstCell, []);
      });

      it('should clear generated classes with falsy property value', () => {
        grid.cellClassNameGenerator = (column, model) => 'foo';
        grid.cellClassNameGenerator = undefined;
        assertCl