Fixed comparison between signed and unsigned

   // test boundary tags

   const std::vector< int > boundaryFaces = {1, 2, 3, 4};

   const std::vector< int > interiorFaces = {0};

   EXPECT_EQ( mesh.template getBoundaryEntitiesCount< 1 >(), boundaryFaces.size() );

   EXPECT_EQ( mesh.template getBoundaryEntitiesCount< 1 >(), (int) boundaryFaces.size() );

   for( size_t i = 0; i < boundaryFaces.size(); i++ ) {

      EXPECT_TRUE( mesh.template isBoundaryEntity< 1 >( edgePermutation[ boundaryFaces[ i ] ] ) );

      // boundary indices are always sorted so we can't test this

//      EXPECT_EQ( mesh.template getBoundaryEntityIndex< 1 >( i ), edgePermutation[ boundaryFaces[ i ] ] );

   }

   // Test interior faces

   EXPECT_EQ( mesh.template getInteriorEntitiesCount< 1 >(), interiorFaces.size() );

   EXPECT_EQ( mesh.template getInteriorEntitiesCount< 1 >(), (int) interiorFaces.size() );

   for( size_t i = 0; i < interiorFaces.size(); i++ ) {

      EXPECT_FALSE( mesh.template isBoundaryEntity< 1 >( edgePermutation[ interiorFaces[ i ] ] ) );

      // boundary indices are always sorted so we can't test this