Do not load start up file when running tests (#710)

Author: giordano

test/runtests.jl

@@ -44,7 +44,7 @@ testfiles = sort(filter(istest, readdir(testdir)))
 
 @testset "$f" for f in testfiles
     mpiexec() do mpirun
-        cmd(n=nprocs) = `$mpirun -n $n $(Base.julia_cmd()) $(joinpath(testdir, f))`
+        cmd(n=nprocs) = `$mpirun -n $n $(Base.julia_cmd()) --startup-file=no $(joinpath(testdir, f))`
         if f == "test_spawn.jl"
             # Some command as the others, but always use a single process
             run(cmd(1))

test/test_spawn.jl

@@ -9,7 +9,7 @@ exename = joinpath(Sys.BINDIR, Base.julia_exename())
 @test isfile(exename)
 errors = Vector{Cint}(undef, N-1)
 # Ensure using consistent flags when spawning subprocesses by using same arguments as `Base.julia_cmd`.
-intercomm = MPI.Comm_spawn(exename, vcat(Base.julia_cmd()[2:end], joinpath(@__DIR__, "spawned_worker.jl")), N-1, MPI.COMM_WORLD, errors)
+intercomm = MPI.Comm_spawn(exename, vcat(Base.julia_cmd()[2:end], "--startup-file=no", joinpath(@__DIR__, "spawned_worker.jl")), N-1, MPI.COMM_WORLD, errors)
 @test errors == zeros(Cint,N-1)
 world_comm = MPI.Intercomm_merge(intercomm, false)