[wix-devs] WixToolsetTest.Mba.Core tests don't run

[Sean Hall]

In the new wix4 repo when I run src\api\api.cmd, the line

dotnet test -c %_C% --no-build
burn\test\WixToolsetTest.Mba.Core\WixToolsetTest.Mba.Core.csproj

doesn't work for me. I can't run tests in VS with Test Explorer either. My
build doesn't actually fail, even though the tests don't run it's just a
warning for some reason:

[xUnit.net 00:00:00.34] Exception discovering tests from
WixToolsetTest.Mba.Core: System.BadImageFormatException: Could not load
file or assembly 'WixToolsetTest.Mba.Core, Version=0.0.0.0,
Culture=neutral, PublicKeyToken=null'. An attempt was made to load a
program with an incorrect format.

I've narrowed it down to the fact that building that project doesn't create
a testhost.exe in build\api\Debug\netcoreapp3.1\win-x86. This was built for
me in the balutil micro repo and I never had problems running the tests
there. The tests are running on the CI server. So my question is: am I the
only one who doesn't get testhost.exe built
into build\api\Debug\netcoreapp3.1\win-x86? Or are the tests somehow
running for other people without testhost.exe?