.NET Nancy self hosting configuration files missing

Question

I'm using the Nancy self hosting feature to do some unit testing. From my unit testing project (separate from the nancy API project), I use the following code to create an instance of my API:

var myApp = new NancyHost(new Uri(MockRestApiUrl), new Bootstrapper(), new HostConfiguration() { UrlReservations = new UrlReservations { CreateAutomatically = true } });

In the Bootstrapper I have some code which looks for a set of config files to preload into memory. Note that these are not static files to be served, but files which drive the configuration of the API.

The problem I have is that the Bootstrapper generates an exception because it can't find the configuration files it's looking for. I set the config file path via RootPathProvider.GetRootPath() and get:

C:...\AppData\Local\Temp\b3f2483d-8c40-45d8-8ba3-dd8db2b9bfd3\b3f2483d-8c40-45d8-8ba3-dd8db2b9bfd3\assembly\dl3\bf80d16d\b3b00d8e_bd91d201\Mapping\PropertyMapping.json

When I look at the folder, the Mapping folder and config file are missing. I have tried marking these as 'Content' and 'Copy Always' in Visual Studio and have cleaned my solution several times, but no luck. How do I get these files copied to the self-hosted site?

Answer 1

I still have no idea why the injected path provider in my module was giving me an '...AppData...' path. However, I did get round it as follows:

public class SelfHostRootPathProvider : IRootPathProvider
{
    public string GetRootPath()
    {
        return AppDomain.CurrentDomain.BaseDirectory;
    }
}

And on a class derived from my app's Bootstrapper:

public class IntegrationBootstrapper : Bootstrapper
{
    protected override IRootPathProvider RootPathProvider
    {
        get { return new SelfHostRootPathProvider(); }
    }
}

And if you need the instantiation:

        var myApp = new NancyHost(new Uri(ServiceUrl), new IntegrationBootstrapper(), new HostConfiguration() { UrlReservations = new UrlReservations { CreateAutomatically = true } });

That resolves the path to the debug folder of my unit test project. I then had to make sure that any configuration files were linked to my unit test project (Add -> Existing Item -> Add as link) and set as Content / Always Copy in Visual Studio in both projects.