private static Expression <Func <TModel, bool> > ToBoolValueExpression <TModel>(FilterItemModel filterItem, bool isNullable)
where TModel : class
{
var nullableFilterValue = BoolHelper.ToBoolOrNull(filterItem.Value);
if (!nullableFilterValue.HasValue)
{
throw new ArgumentException($"{filterItem.Value} is not of type {typeof(bool)}.");
}
var filterValue = nullableFilterValue.Value;
if (isNullable)
{
var entityParamSelector = ReflectionHelper.MemberSelector <TModel, bool?>(filterItem.Column);
var expression = FilterExpressionHelper.GetNullableExpression(filterItem.Filter, filterValue);
return(entityParamSelector.CombineSelectorParamExpression(expression));
}
else
{
var entityParamSelector = ReflectionHelper.MemberSelector <TModel, bool>(filterItem.Column);
var expression = FilterExpressionHelper.GetExpression(filterItem.Filter, filterValue);
return(entityParamSelector.CombineSelectorParamExpression(expression));
}
}
public void ToBoolTestOrNullTest(object value, bool expected)
{
var actual = BoolHelper.ToBoolOrNull(value);
var isDefaultResult = actual == null;
Assert.Equal(expected, isDefaultResult);
}