reinstate tests

Author: CarloLucibello

test/runtests.jl

@@ -24,7 +24,7 @@ tests = [
 !CUDA.functional() && @warn("CUDA unavailable, not testing GPU support")
 
 # Testing all graph types. :sparse is a bit broken at the moment
-@testset "GraphNeuralNetworks: graph format $graph_type" for graph_type in (:coo,)# :sparse, :dense)
+@testset "GraphNeuralNetworks: graph format $graph_type" for graph_type in (:coo, :sparse, :dense)
     global GRAPH_T = graph_type
     for t in tests
         include("$t.jl")