Feature/utils coverage

src/utils/Partitioner.cpp

@@ -26,7 +26,7 @@ Partitioner::partition(const CRSGraph& graph)
   std::vector<float> tpwgts(npart, 1. / npart);
 
   std::vector<float> ubvec{1.05};
-  std::vector<int> options{1, 1, 0};
+  std::vector<int> options{1, 0, 0};
   int edgecut = 0;
   Array<int> part(0);
 
@@ -66,9 +66,11 @@ Partitioner::partition(const CRSGraph& graph)
     int result =
       ParMETIS_V3_PartKway(&(vtxdist[0]), entries_ptr, neighbors_ptr, NULL, NULL, &wgtflag, &numflag, &ncon, &npart,
                            &(tpwgts[0]), &(ubvec[0]), &(options[0]), &edgecut, &(part[0]), &parmetis_comm);
+    // LCOV_EXCL_START
     if (result == METIS_ERROR) {
       throw UnexpectedError("Metis Error");
     }
+    // LCOV_EXCL_STOP
 
     MPI_Comm_free(&parmetis_comm);
   }
@@ -81,9 +83,11 @@ Partitioner::partition(const CRSGraph& graph)
 #else   // PUGS_HAS_MPI
 
 Array<int>
-Partitioner::partition(const CRSGraph&)
+Partitioner::partition(const CRSGraph& graph)
 {
-  return Array<int>(0);
+  Array<int> partition{graph.entries().size() - 1};
+  partition.fill(0);
+  return partition;
 }
 
 #endif   // PUGS_HAS_MPI