c# - Mocking framework for asp.net core 5.0

Question

I recently installed Visual Studio 2015 and started a project with a web site and a asp class library which will contain the unit tests for the web site. I usually use Moq for mocking but I am no stranger to try a different mocking framework. The problem I am having is that I added Moq as a reference to the unit test project and started using it. Everything seems fine at first until I tried to compile.

When I compiled I got an error message saying:

ASP.NET Core 5.0 error CS0246: The type or namespace name 'Moq' could not be found (are you missing a using directive or an assembly reference?)

I noticed that I could switch between ASP.NET 5.0 and ASP.NET Core 5.0 in the code view and when selecting ASP.NET Core 5.0 I get errors but no when selecting ASP.NET 5.0. I tried searching for an answer but I did not have any luck.

Is the problem that Moq does not work with vnext and I should use a different framework (if so which works?) or can I solve this somehow? My project.json:

{
"version": "1.0.0-*",
"dependencies": {
    "Web": "1.0.0-*",
    "Xunit.KRunner": "1.0.0-beta1",
    "xunit": "2.0.0-beta5-build2785",
    "Moq": "4.2.1409.1722"
},

"frameworks": {
    "aspnet50": {
        "dependencies": {
        }
    },
    "aspnetcore50": {
        "dependencies": {
        }
    }
},
"commands": {
    "test": "Xunit.KRunner"
}

}

Answer 1

ASP.NET team from Microsoft have created a special version of Moq for internal usage. You can find a fork project on the asp.net github page.

How to use that?

• Register a Moq dependencies in project.json:

  {
      "frameworks": {
          "dnx451": {
              "dependencies": {
                  "Moq": "4.2.1312.1622"
              }
          },
          "dnxcore50": {
              "dependencies": {
                  "moq.netcore": "4.4.0-beta8"
              }
          }
      }
  }
  

• Create a NuGet.config file in project home directory.

  <?xml version="1.0" encoding="utf-8"?>
      <configuration>
          <packageSources>
              <add key="AspNetVNext" value="https://www.myget.org/F/aspnetcidev/api/v3/index.json" />
              <add key="NuGet" value="https://api.nuget.org/v3/index.json" />
          </packageSources>
      </configuration>
  

And use Moq! :)