public async Task BoundFunctionSingle()
{
List <int> expectedResult;
using (var dbContext = Fixture.CreateContext())
expectedResult = dbContext.OrderItems.Where(i =>
(i.Order.Name == "Order 1" || i.Order.Name == "Order 2") && i.Order.Customer.Country == "RU" && i.Order.Customer.Id == 1)
.Select(i => i.Id).ToList();
Db.OeDataAdapter dataAdapter = Fixture.OeEdmModel.GetDataAdapter(Fixture.OeEdmModel.EntityContainer);
String request = $"Customers('RU',1)/{dataAdapter.DataContextType.Namespace}.BoundFunctionSingle(orderNames=['Order 1','Order 2'])?$expand=Customer,Items&$select=Name";
ODataUri odataUri = Fixture.ParseUri(request);
IEdmModel edmModel = Fixture.OeEdmModel.GetEdmModel(odataUri.Path);
var parser = new OeParser(odataUri.ServiceRoot, edmModel);
var response = new MemoryStream();
await parser.ExecuteQueryAsync(odataUri, OeRequestHeaders.JsonDefault, response, CancellationToken.None).ConfigureAwait(false);
response.Position = 0;
List <Object> fromOe = new ResponseReader(edmModel).Read(response).Cast <Object>().ToList();
Assert.Equal(expectedResult, fromOe.SelectMany(c => (IEnumerable <dynamic>)((dynamic)c).Items).Select(i => (int)i.Id).OrderBy(id => id));
}
