maxspan maxspan - 2 months ago 38
ASP.NET (C#) Question

using moq with asp.net core while unit testing

I am trying to write a very simple unit test in asp.net core using moq and xunit.
But I am getting a error when I run the unit test.

StackTrace:
at Moq.Mock

1..ctor(MockBehavior behavior, Object[] args)
at Moq.Mock
1..ctor(MockBehavior behavior)
at Moq.Mock`1..ctor()

Could not load file or assembly 'System.Core, version=4.0.0'.

Below is my code and project.json file.

{
"version": "0.1.0-*",
"testRunner": "xunit",
"dependencies": {
"Moq": "4.5.22",
"xunit": "2.2.0-beta2-build3300",
"dotnet-test-xunit": "2.2.0-preview2-build1029",
"IntegraPay.Domain": {
"version": "1.0.0-*",
"target": "project"
},
"Integrapay.RegistrationApplication": {
"version": "",
"target": "project"
},
"Microsoft.NETCore.Portable.Compatibility": "1.0.1"
},
"frameworks": {
"netcoreapp1.0": {
"imports": [
"dotnet5.6",
"netcoreapp1.0",
"net45",
"net451"
],
"dependencies": {
"Microsoft.NETCore.App": {
"type": "platform",
"version": "1.0.0"
}
}
}
}
}


[Fact]
public async void GetAttributes()
{
Mock<IRegistrationRepository> repo = new Mock<IRegistrationRepository>();
RegistrationManager manager = new RegistrationManager(repo.Object);
var item = await manager.CreateModel("1234");
}

Answer

Use the preview build of Moq. https://blogs.msdn.microsoft.com/dotnet/2016/09/27/the-week-in-net-on-net-on-orchard-2-mocking-on-core-storyteller-armello/ lists other packages that are compatible with netstandard.

You never want to add net45x in the imports node for a netcoreapp1.0 targeting application. The application will most likely fail to load assemblies (like in your case) or will run in to missing APIs at runtime.