Update NUnit to v4

[ltrzesniewski]

I'm not sure how we should update the Zebus.Testing library version... Currently we have <ZebusTestingVersion>$(ZebusVersion)</ZebusTestingVersion>, which Zebus.Testing version should we release next?

• 4.0.0: it wouldn't be nice to have a different major than the main lib, but we bumped a dependency major version
• 3.15.0: there is no associated Zebus version yet
• 3.15.0-pre1: just a prerelease for the moment, but only Zebus.Testing changed

Thoughts?

[ocoanet]

I think that it is not a big issue to have a Zebus.Testing version that is ahead of the main library version. The main library version will catch up the testing library version at some point.

However, it seems to me that Zebus.Testing should be split into:

• Zebus.Testing: a public library published as a nuget package that contains public test helpers and does not rely on NUnit
• Zebus.Testing.Internal: a private library used by Zebus test projects that would reference NUnit

Of course this split should be discussed outside of your PR.

[ocoanet]

So either 4.0.0 or 3.15.0 could work. I suppose it is acceptable to ignore semver for the testing library.

[ltrzesniewski]

Ok, thanks, let's go for 3.15.0 then. 👍