public void AddBoolean_Column()
        {
            Expression <Func <AllTypesView, Boolean> > expression = (model) => model.BooleanField;

            IGridColumn <AllTypesView, Boolean> actual = columns.AddBoolean(expression);

            Assert.Equal("text-center", actual.CssClasses);
            Assert.Equal(expression, actual.Expression);
            Assert.Empty(actual.Title.ToString());
            Assert.Single(columns);
        }