Benchmarks fail to run

[MaxKot]

Bug

Steps to reproduce:

1. Run nunit.framework.benchmarks in Release configuration.
2. Select ByteAllocationBenchmark, CompositeWorkItemBenchmark or StreamsComparerBenchmark

Expected result

Benchmarks running

Actual result

Benchmark error CSC : error CS7027: Error signing output with public key from file '..\..\nunit.snk' -- File not found.

Additional steps

3. Set AssemblyOriginatorKeyFile value relative to $(MSBuildThisFileDirectory) in src\NUnitFramework\Directory.Build.props and src\NUnitFramework\benchmarks\nunit.framework.benchmarks\nunit.framework.benchmarks.csproj

Result after additional steps

Benchmark error \src\NUnitFramework\Directory.Build.props(72,5): error : Missing AssemblyConfiguration for net6.0

Addtional notes

It appears that TargetFramework is empty when BenchmarkDotNet builds boilerplate code. Setting hard-coded AssemblyConfiguration value allows benchmarks to run without issue.

[stevenaw]

Thanks for the diagnosis and report here @MaxKot !

[stevenaw]

@OsirisTerje
We have a defined 4.4 milestone however I realize we may want a 4.3.1. I'll make that now and assign this to it.