def test_mesh_function_assign_2D_facets(): mesh = UnitSquareMesh(MPI.comm_world, 3, 3) mesh.init(1) f = MeshFunction("int", mesh, mesh.topology.dim - 1, 25) for cell in Cells(mesh): for i, facet in enumerate(FacetRange(cell)): assert 25 == f[facet] g = MeshValueCollection("int", mesh, 1) g.assign(f) assert mesh.num_facets() == f.size() assert mesh.num_cells() * 3 == g.size() for cell in Cells(mesh): for i, facet in enumerate(FacetRange(cell)): assert 25 == g.get_value(cell.index(), i) f2 = MeshFunction("int", mesh, g, 0) for cell in Cells(mesh): for i, facet in enumerate(FacetRange(cell)): assert f2[facet] == g.get_value(cell.index(), i)