How to unit test the controller? - asp.net

Question

I have the controller in ASP.NET Mvc 6.
public class VendorManagementController : Controller
{
private readonly IVendorRespository _vendorRespository;
public VendorManagementController(IVendorRespository vendorRespository)
{
_vendorRespository = vendorRespository;
}
[Microsoft.AspNet.Mvc.HttpGet]
public dynamic GetVendorById(int pkey)
{
Vendor vendor = _vendorRespository.GetVendor(pkey);
return vendor;
}
// GET
// USing JqGrid
[Microsoft.AspNet.Mvc.HttpGet]
public dynamic GetVendors(string sidx, string sortOrder, int page, int rows, int pkey)
{
var vendors = _vendorRespository.GetAllVendors().AsQueryable();
var pageIndex = Convert.ToInt32(page) - 1;
var pageSize = rows;
var totalRecords = vendors.Count();
var totalPages = (int)Math.Ceiling((float)totalRecords / (float)pageSize);
return something
}
// POST
[System.Web.Http.HttpPost]
public string PostVendor(Vendor item)
{
_vendorRespository.AddVendor(item);
}
The link provides an example to test the controller, but it uses HttpRequestMessage. It doesn't fit my case.
So if I want to test the return Vendors, how?
Say I have the method:
[Fact]
public void GetAllVendors_ShouldReturnAllVendors()
{
var testVendors = GetTestVendors();
var vendorRespository = new VendorRespository();
var controller = new VendorManagementController(vendorRespository);
}
The thing is
var vendors = _vendorRespository.GetAllVendors().AsQueryable();
from the databse, how to mock up it with my fake vendors?
EDIT:
The method returns dynamic type, I can't get the Count of the list.

Answer 1

Install a mocking framework such as Moq from nuget - https://www.nuget.org/packages/Moq/.
using Moq;
[Fact]
public void GetAllVendors_ShouldReturnAllVendors()
{
var testVendors = GetTestVendors();
var vendorRespository = new Mock<IVendorRepository>();
vendorRepository.Setup(m => m.GetAllVendors()).Returns(new List<Vendor> { new Vendor() }); // Guessing a bit on return types
var controller = new VendorManagementController(vendorRespository.Object);
var result = controller.GetVendors( ... )
// Assert you get 1 Vendor back, not sure what you're planning to return by "something". :-)
}
Other frameworks are available, NSubsititute, FakeItEasy