Trying to "wait for debugger" in tests doesn't work

[rjmholt]

There are lines in both LanguageServerTests.cs and DebugServerTests.cs that can be uncommented to enable debugger attachment:

PowerShellEditorServices/test/PowerShellEditorServices.Test.Host/LanguageServerTests.cs

Line 53 in 4bb71bd

//waitForDebugger: true);

However, trying these in VSCode, I just get a bunch of error dialogs pop up in the machine's native UI and the tests just plough on and fail. I'm guessing this option is meant for Visual Studio usage, rather than VSCode.

I'm thinking we should retire this functionality and instead add a compile-time-conditional block with something like a Console.ReadKey() that reports the process ID of the test runner (that's how I tend to do it at the moment at least).