DotNetCoreTest fails to use XUnit2Settings on Cake 0.27

[erik-am]

What You Are Seeing?

I'm using the DotNetCoreTest command using both DotNetCoreTestSettings as well as Xunit2Settings:

DotNetCoreTest(dotnetTestSettings, project, xunitSettings);

which results in the following exception:

Error: One or more errors occurred.
        Method not found: 'Cake.Common.Tools.XUnit.ParallelismOption Cake.Common.Tools.XUnit.XUnit2Settings.get_Parallelism()'.

What is Expected?

Expected is that the tests will be executed.

What version of Cake are you using?

The error occurs in 0.27.0 and 0.27.1.
The error does not occur in 0.26.1.

I think the regression has been introduced by the change of ParallelismOption to a nullable.

See https://github.com/cake-build/cake/pull/2040/files#diff-133ec58ad83fd466eed3b129d32daefaL84

Are you running on a 32 or 64 bit system?

64 bit

What environment are you running on? Windows? Linux? Mac?

Windows

Are you running on a CI Server? If so, which one?

Yes, Jenkins.

How Did You Get This To Happen? (Steps to Reproduce)

See "What You Are Seeing?".

[kcamp]

@erik-am It would help to have more of the stack trace and/or verbose output, but it appears that the exception is coming out of the Cake.Incubator assembly at the method below, right?

void DotNetCoreTest(this ICakeContext context, FilePath project, XUnit2Settings xunitSettings)

[erik-am]

Thank you @kcamp, indeed it seems the issue is in Cake.Incubator. So, Cake 0.27.0 did include a breaking change in contrast to the release notes,

For now, I changed my usage of DotNetCoreTest, so that I'm using the method provided by Cake itself instead of the extension. Thanks for pointing me in the right direction! 👍

[gep13]

@wwwlicious are you in a position to take a look at this?

@erik-am unfortunately, this does look like it was an unintended breaking change in Cake 0.27.0 😢

@cake-build/cake-team FYI...

[wwwlicious]

@gep13 I'll have a look..