[mono] Support RuntimeType.MakeGenericType with non-RuntimeType elements

[uweigand]

• Fixes [mono] RuntimeType.MakeGenericType with non-RuntimeType elements not supported #58013

[jkotas]

Do we need to add test?

[lewing]

runtime (Libraries Test Run release mono Linux arm64 Debug) hit #57941

[SamMonoRT]

@uweigand - can we get a test added for the change ?

[uweigand]

Added test case. The test fails on Mono without this patch and passes with it. In any case it passes with CoreCLR.

If there is a more straightforward way to create a non-RuntimeType type, I'd appreciate any suggestions ...

[jkotas]

If there is a more straightforward way to create a non-RuntimeType type

I think new MockType() should work.

Or include Common\tests\System\NonRuntimeType.cs in the project and use new NonRuntimeType().

[uweigand]

If there is a more straightforward way to create a non-RuntimeType type

I think new MockType() should work.

Or include Common\tests\System\NonRuntimeType.cs in the project and use new NonRuntimeType().

Thanks for the pointers! While investigating those, I found Helpers.NonRuntimeTypes which is already used in similar tests, so I used this here as well.

[jkotas]

Thanks

[marek-safar]

/backport to release/6.0

[github-actions]

Started backporting to release/6.0: https://github.com/dotnet/runtime/actions/runs/1174964346