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# Copyright (C) 2024 Paul T. Kühner
#
# This file is part of DOLFINx (https://www.fenicsproject.org)
#
# SPDX-License-Identifier: LGPL-3.0-or-later
from mpi4py import MPI
import numpy as np
import pytest
from dolfinx import mesh
@pytest.mark.parametrize("n", [2, 10, 100])
@pytest.mark.parametrize(
"ghost_mode", [mesh.GhostMode.none, mesh.GhostMode.shared_vertex, mesh.GhostMode.shared_facet]
)
@pytest.mark.parametrize(
"ghost_mode_refined",
[mesh.GhostMode.none, mesh.GhostMode.shared_vertex, mesh.GhostMode.shared_facet],
)
@pytest.mark.parametrize("option", [mesh.RefinementOption.none, mesh.RefinementOption.parent_cell])
def test_refine_interval(n, ghost_mode, ghost_mode_refined, option):
msh = mesh.create_interval(MPI.COMM_WORLD, n, [0, 1], ghost_mode=ghost_mode)
msh_refined, edges, vertices = mesh.refine(
msh,
option=option,
)
# TODO: add create_cell_partitioner(ghost_mode) when works
# vertex count
assert msh_refined.topology.index_map(0).size_global == 2 * n + 1
if option is mesh.RefinementOption.parent_cell:
# edge count
edge_count = np.array([len(edges)], dtype=np.int64)
edge_count = MPI.COMM_WORLD.allreduce(edge_count)
assert edge_count == msh_refined.topology.index_map(1).size_global == 2 * n
else:
assert edges is None
@pytest.mark.parametrize("n", [50, 100])
@pytest.mark.parametrize(
"ghost_mode", [mesh.GhostMode.none, mesh.GhostMode.shared_vertex, mesh.GhostMode.shared_facet]
)
@pytest.mark.parametrize(
"ghost_mode_refined",
[mesh.GhostMode.none, mesh.GhostMode.shared_vertex, mesh.GhostMode.shared_facet],
)
def test_refine_interval_adaptive(n, ghost_mode, ghost_mode_refined):
msh = mesh.create_interval(MPI.COMM_WORLD, n, [0, 1], ghost_mode=ghost_mode)
msh_refined, edges, vertices = mesh.refine(
msh,
np.arange(10, dtype=np.int32),
option=mesh.RefinementOption.parent_cell,
)
# TODO: add create_cell_partitioner(ghost_mode) when works
# vertex count
assert msh_refined.topology.index_map(0).size_global == n + 1 + 10 * MPI.COMM_WORLD.size
# edge count
edge_count = np.array([len(edges)], dtype=np.int64)
edge_count = MPI.COMM_WORLD.allreduce(edge_count)
assert (
edge_count == msh_refined.topology.index_map(1).size_global == n + 10 * MPI.COMM_WORLD.size
)
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