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import copy
import pathlib
from functools import partial
import numpy as np
import pytest
import meshio
from . import helpers
def gmsh_periodic():
mesh = copy.deepcopy(helpers.quad_mesh)
trns = [0] * 16 # just for io testing
mesh.gmsh_periodic = [
[0, (3, 1), None, [[2, 0]]],
[0, (4, 6), None, [[3, 5]]],
[1, (2, 1), trns, [[5, 0], [4, 1], [4, 2]]],
]
return mesh
@pytest.mark.parametrize(
"mesh",
[
# helpers.empty_mesh,
helpers.line_mesh,
helpers.tri_mesh,
helpers.triangle6_mesh,
helpers.quad_mesh,
helpers.quad8_mesh,
# helpers.tri_quad_mesh,
helpers.tet_mesh,
helpers.tet10_mesh,
helpers.hex_mesh,
helpers.hex20_mesh,
helpers.add_point_data(helpers.tri_mesh, 1),
helpers.add_point_data(helpers.tri_mesh, 3),
helpers.add_point_data(helpers.tri_mesh, 9),
helpers.add_cell_data(helpers.tri_mesh, [("a", (), np.float64)]),
helpers.add_cell_data(helpers.tri_mesh, [("a", (3,), np.float64)]),
helpers.add_cell_data(helpers.tri_mesh, [("a", (9,), np.float64)]),
helpers.add_field_data(helpers.tri_mesh, [1, 2], int),
helpers.add_field_data(helpers.tet_mesh, [1, 3], int),
helpers.add_field_data(helpers.hex_mesh, [1, 3], int),
gmsh_periodic(),
],
)
@pytest.mark.parametrize("binary", [False, True])
def test_gmsh22(mesh, binary, tmp_path):
writer = partial(meshio.gmsh.write, fmt_version="2.2", binary=binary)
helpers.write_read(tmp_path, writer, meshio.gmsh.read, mesh, 1.0e-15)
@pytest.mark.parametrize(
"mesh",
[
helpers.tri_mesh,
helpers.triangle6_mesh,
helpers.quad_mesh,
helpers.quad8_mesh,
# helpers.tri_quad_mesh,
helpers.tet_mesh,
helpers.tet10_mesh,
helpers.hex_mesh,
helpers.hex20_mesh,
helpers.add_point_data(helpers.tri_mesh, 1),
helpers.add_point_data(helpers.tri_mesh, 3),
helpers.add_point_data(helpers.tri_mesh, 9),
helpers.add_cell_data(helpers.tri_mesh, [("a", (), np.float64)]),
helpers.add_cell_data(helpers.tri_mesh, [("a", (3,), np.float64)]),
helpers.add_cell_data(helpers.tri_mesh, [("a", (9,), np.float64)]),
helpers.add_field_data(helpers.tri_mesh, [1, 2], int),
helpers.add_field_data(helpers.tet_mesh, [1, 3], int),
helpers.add_field_data(helpers.hex_mesh, [1, 3], int),
],
)
@pytest.mark.parametrize("binary", [False, True])
def test_gmsh40(mesh, binary, tmp_path):
writer = partial(meshio.gmsh.write, fmt_version="4.0", binary=binary)
helpers.write_read(tmp_path, writer, meshio.gmsh.read, mesh, 1.0e-15)
@pytest.mark.parametrize(
"mesh",
[
helpers.tri_mesh,
helpers.triangle6_mesh,
helpers.quad_mesh,
helpers.quad8_mesh,
# helpers.tri_quad_mesh,
helpers.tet_mesh,
helpers.tet10_mesh,
helpers.hex_mesh,
helpers.hex20_mesh,
helpers.add_point_data(helpers.tri_mesh, 1),
helpers.add_point_data(helpers.tri_mesh, 3),
helpers.add_point_data(helpers.tri_mesh, 9),
helpers.add_cell_data(helpers.tri_mesh, [("a", (), np.float64)]),
helpers.add_cell_data(helpers.tri_mesh, [("a", (3,), np.float64)]),
helpers.add_cell_data(helpers.tri_mesh, [("a", (9,), np.float64)]),
helpers.add_field_data(helpers.tri_mesh, [1, 2], int),
helpers.add_field_data(helpers.tet_mesh, [1, 3], int),
helpers.add_field_data(helpers.hex_mesh, [1, 3], int),
gmsh_periodic(),
],
)
@pytest.mark.parametrize("binary", [False, True])
def test_gmsh41(mesh, binary, tmp_path):
writer = partial(meshio.gmsh.write, fmt_version="4.1", binary=binary)
helpers.write_read(tmp_path, writer, meshio.gmsh.read, mesh, 1.0e-15)
def test_generic_io(tmp_path):
helpers.generic_io(tmp_path / "test.msh")
# With additional, insignificant suffix:
helpers.generic_io(tmp_path / "test.0.msh")
@pytest.mark.parametrize(
"filename, ref_sum, ref_num_cells",
[("insulated-2.2.msh", 2.001762136876221, [21, 111])],
)
@pytest.mark.parametrize("binary", [False, True])
def test_reference_file(filename, ref_sum, ref_num_cells, binary, tmp_path):
this_dir = pathlib.Path(__file__).resolve().parent
filename = this_dir / "meshes" / "msh" / filename
mesh = meshio.read(filename)
tol = 1.0e-2
s = mesh.points.sum()
assert abs(s - ref_sum) < tol * ref_sum
assert [c.type for c in mesh.cells] == ["line", "triangle"]
assert [len(c.data) for c in mesh.cells] == ref_num_cells
assert list(map(len, mesh.cell_data["gmsh:geometrical"])) == ref_num_cells
assert list(map(len, mesh.cell_data["gmsh:physical"])) == ref_num_cells
writer = partial(meshio.gmsh.write, fmt_version="2.2", binary=binary)
helpers.write_read(tmp_path, writer, meshio.gmsh.read, mesh, 1.0e-15)
@pytest.mark.parametrize(
"filename, ref_sum, ref_num_cells, ref_num_cells_in_cell_sets",
[
(
"insulated-4.1.msh",
2.001762136876221,
{"line": 21, "triangle": 111},
{"line": 27, "triangle": 120},
)
],
# Note that testing on number of cells in
# cell_sets_dict will count both cells associated with physical tags, and
# bounding entities.
)
@pytest.mark.parametrize("binary", [False, True])
def test_reference_file_with_entities(
filename, ref_sum, ref_num_cells, ref_num_cells_in_cell_sets, binary, tmp_path
):
this_dir = pathlib.Path(__file__).resolve().parent
filename = this_dir / "meshes" / "msh" / filename
mesh = meshio.read(filename)
tol = 1.0e-2
s = mesh.points.sum()
assert abs(s - ref_sum) < tol * ref_sum
assert {k: len(v) for k, v in mesh.cells_dict.items()} == ref_num_cells
assert {
k: len(v) for k, v in mesh.cell_data_dict["gmsh:physical"].items()
} == ref_num_cells
writer = partial(meshio.gmsh.write, fmt_version="4.1", binary=binary)
num_cells = {k: 0 for k in ref_num_cells_in_cell_sets}
for vv in mesh.cell_sets_dict.values():
for k, v in vv.items():
num_cells[k] += len(v)
assert num_cells == ref_num_cells_in_cell_sets
helpers.write_read(tmp_path, writer, meshio.gmsh.read, mesh, 1.0e-15)
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