What's wrong with consuming ConfiguredTaskAwaitable from PortableClassLibrary's class under Debugger from MSTest Runner or Console App?
- by Stas Shusha
*Its only Debug-time error, but a very weird one.
Problem:
While running with Debugger attached and calling a method, exposed in separate Portable library, returning ConfiguredTaskAwaitable, we get InvalidProgramException.
Repro:
Having 2 projects:
PortableClassLibrary (supporting .Net 4.5; Windows Store; Windows Phone 8)
with 1 class:
public class Weird
{
public static ConfiguredTaskAwaitable GetConfiguredTaskAwaitable()
{
return new ConfiguredTaskAwaitable();
}
}
ConsoleApplication with code:
static void Main(string[] args)
{
Weird.GetConfiguredTaskAwaitable();
}
Notes:
replacing ConfiguredTaskAwaitable with ConfiguredTaskAwaitable<T> (a generic version) fixes this strange issue
consuming this method form WP8 or Win8 app under Debugger works fine.
Currently it causes problems cause I cant run my Unit Tests under Debugger. I'm forced to change my "ObjectUnderTest" implementation
to return generic ConfiguredTaskAwaitable<T>, which is fine for the real project, but still is only a workaround.
The Question is:
does anybody knows the reason of this error? It definitely related to Portable Class Library magic.
