`EmptyFiles` directory is missing from `dotnet publish` output after 31.7.2

[tbaliukynas]

Describe the bug

After upgrading Verify.NUnit from version 31.7.1 to 31.7.2 (or higher), tests started failing with the following error:

System.Exception : Failed to compare files
  ----> System.TypeInitializationException : The type initializer for 'EmptyFiles.AllFiles' threw an exception.
  ----> System.Exception : Could not find empty files directory. Searched: ...

My CI/CD workflow builds the test project once and then runs the compiled binaries on a schedule, so building and running tests are separate jobs. The test project is built using the dotnet publish command.

After inspecting the published output, I noticed that the EmptyFiles directory is missing. Downgrading to 31.7.1 resolves the issue.

Minimal Repro

Run the following:

git clone https://github.com/VerifyTests/Verify.git
cd ./Verify/usages/NUnitNugetUsage/
dotnet publish ./NUnitNugetUsage.csproj -o ./out/
ls -dir ./out/EmptyFiles/

Notice that the EmptyFiles directory is missing when using 31.7.2 or newer.