setupMergeTest(t *testing.T)
: (types.ValueReadWriter, tree.NodeStore, doltdb.Rootish, doltdb.Rootish, *doltdb.RootValue, *doltdb.RootValue, *doltdb.RootValue, durable.Index, prolly.ArtifactMap)
setupNomsMergeTest(t *testing.T)
: (types.ValueReadWriter, tree.NodeStore, doltdb.Rootish, doltdb.Rootish, *doltdb.RootValue, *doltdb.RootValue, *doltdb.RootValue, types.Map, types.Map, *MergeStats)