Update runtests.jl

Author: DilumAluthge

test/runtests.jl

@@ -16,6 +16,10 @@ else
 end
 
 @testset "SlurmClusterManager.jl" begin
+  @testset "Unit tests" begin
+    include("unit.jl")
+  end
+  
   # test that slurm is available
   @test !(Sys.which("sinfo") === nothing)