InvokeGet with static context fails

[tpluscode]

I'm migrating an older projects to .NET Standard. Previously I used ImpromputInterface:

Impromptu.InvokeGet(type.WithStaticContext(), "Context");

Where the type is for example a nested private class within a test fixture:

public class ContextResolverTests
{
    private class GenericType
    {
        private static string Context => "Text";
    }
}

Now I want to target netstandard1.5 so I replaced the original implementation with Dynamitey

var staticContext = InvokeContext.CreateStatic;
return Dynamic.InvokeGet(staticContext(type), "Context");

And it stopped working!

Microsoft.CSharp.RuntimeBinder.RuntimeBinderException : 
   'JsonLD.Entities.Tests.ContextResolverTests.GenericType' does not contain a definition for 'Context'

Apparently the class has to be public and cannot be nested. Here's my repository stripped down. I removed everything, all unnecessary code and replaced paket with plain nuget references, to no avail.

does-not-work.zip

But the real kicker is that I tried to reproduce this from scratch and was completely unable to get the same effect. What is going on?

works.zip

[tpluscode]

Oh, I got something!

In the second attachment all 4 tests pass only when all of them are executed together. And more precisely, when Nested_WithImpromptu runs before Nested_WithDynamitey.

Which means that calling ImpromptuInterface.InvokeExt.InvokeExt.WithStaticContext first is what changes the behaviour of Dynamitey.

[tpluscode]

One more observation. While trying to debug this I noticed that there already is a similar passing test: TestStaticPropertySetFollowedByGetTest. The differece is that it first sets the property. And indeed, calling setter first does "something" which fixes getting private properties later.

Even more interesting is that getting a public static property fails if it is first set because of this condition, saying cannot explicitly call operator or accessor.