public void Init_And_BuildExpression()
{
var formCollection = new NameValueCollection
{
{ "Filters[CategoryId].Values", "1" },
{ "Filters[CategoryId].Values", "14" },
{ "Filters[CategoryId].Values", "5" },
{ "Filters[CategoryId].ConditionKey", "isin" },
{ "Filters[CategoryId].TypeName", typeof(Int32).FullName },
{ "Filters[UnitPrice].LeftValue", "10" },
{ "Filters[UnitPrice].RightValue", "2345.14" },
{ "Filters[UnitPrice].ConditionKey", "between" },
{ "Filters[UnitPrice].TypeName", typeof(Decimal).FullName },
{ "Filters[Name].LeftValue", "testname" },
{ "Filters[Name].ConditionKey", "contains" },
{ "Filters[Name].TypeName", typeof(string).FullName }
};
var modelBinder = new DefaultModelBinder();
var valueProvider = new NameValueCollectionValueProvider(formCollection, null);
var bindingContext = new ModelBindingContext
{
ModelName = string.Empty,
ValueProvider = valueProvider,
ModelMetadata = ModelMetadataProviders.Current.GetMetadataForType(null, typeof(FilterOptions)),
};
var controllerContext = new ControllerContext();
var filterOptions = modelBinder.BindModel(controllerContext, bindingContext) as IFilterOptions;
Assert.IsNotNull(filterOptions);
var productFilter = new ProductFilter().Init(filterOptions);
var expression = productFilter.BuildExpression <Product>();
Assert.IsNotNull(expression);
var predicat = expression.Compile();
Assert.IsFalse(predicat(new Product {
CategoryId = 24444, Name = string.Empty
}));
Assert.IsTrue(predicat(new Product
{
Name = "testname",
CategoryId = 14,
UnitPrice = 23,
}));
}