Error when running xunit tests, AssemblyRunner.Start() ambiguous method

raxuser100

A recent Linqpad update caused this issue.
Error when executing xunit tests in a query. Simply create a new empty query, add Xunit test support and then run. Error is:

CS0121 The call is ambiguous between the following methods or properties: 'AssemblyRunner.Start(string, bool?, TestMethodDisplay?, TestMethodDisplayOptions?, bool?, bool?, int?, bool?)' and 'AssemblyRunner.Start(string, bool?, TestMethodDisplay?, TestMethodDisplayOptions?, bool?, bool?, int?, bool?, ParallelAlgorithm?)'

Environment:

• Linqpad v8.4.11 beta
• Windows 11

The offending line of code in the xunit.linq is:

static TestResultSummary[] RunTests(bool quietly = false, bool reportFailuresOnly = false, Func<Xunit.Abstractions.ITestCase, bool> filter = null)
{
//stuff...
   runner.Start();
   done.Wait();
   return tests;
}

I fixed it with a specific call to the overload accepting the options instance (since the other two overloads are obsolete and complex) Not sure if this is correct but it works:

var opt = new AssemblyRunnerStartOptions();
runner.Start(opt);

JoeAlbahari

This issue is actually caused by an xUnit update.

The difficulty with rolling out a workaround in LINQPad is that it will break with older versions of xUnit that lack that type. I'm hoping they're going to release the fix soon.

raxuser100

Thanks for the update Joe. In the meantime, will my fix be reasonable measure? We are using the latest Xunit and DotNet versions for all projects:

var opt = new AssemblyRunnerStartOptions();
runner.Start(opt);