Add some very basic tests

Author: DilumAluthge

test/condor.jl

@@ -0,0 +1,12 @@
+@test Distributed.nprocs() == 1
+@test Distributed.nworkers() == 1
+@test Distributed.procs() == [1]
+@test Distributed.workers() == [1]
+
+mgr = HTCManager(4)
+Distributed.addprocs(mgr)
+
+@test Distributed.nprocs() == 5
+@test Distributed.nworkers() == 4
+@test Distributed.procs() == [1, 2, 3, 4, 5]
+@test Distributed.workers() == [2, 3, 4, 5]