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"""Unit tests for MeshValueCollection"""
# Copyright (C) 2011 Johan Hake
#
# This file is part of DOLFIN.
#
# DOLFIN is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DOLFIN is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
#
# First added: 2011-03-10
# Last changed: 2011-03-10
import numpy.random
from dolfin import *
def test_assign_2D_cells():
mesh = UnitSquareMesh(3, 3)
ncells = mesh.num_cells()
f = MeshValueCollection("int", mesh, 2)
all_new = True
for cell in cells(mesh):
value = ncells - cell.index()
all_new = all_new and f.set_value(cell.index(), value)
g = MeshValueCollection("int", mesh, 2)
g.assign(f)
assert ncells == f.size()
assert ncells == g.size()
assert all_new
for cell in cells(mesh):
value = ncells - cell.index()
assert value, g.get_value(cell.index() == 0)
old_value = g.get_value(0, 0)
g.set_value(0, 0, old_value + 1)
assert old_value + 1 == g.get_value(0, 0)
def test_assign_2D_facets():
mesh = UnitSquareMesh(3, 3)
mesh.init(2, 1)
ncells = mesh.num_cells()
f = MeshValueCollection("int", mesh, 1)
all_new = True
for cell in cells(mesh):
value = ncells - cell.index()
for i, facet in enumerate(facets(cell)):
all_new = all_new and f.set_value(cell.index(), i, value + i)
g = MeshValueCollection("int", mesh, 1)
g.assign(f)
assert ncells*3 == f.size()
assert ncells*3 == g.size()
assert all_new
for cell in cells(mesh):
value = ncells - cell.index()
for i, facet in enumerate(facets(cell)):
assert value+i == g.get_value(cell.index(), i)
def test_assign_2D_vertices():
mesh = UnitSquareMesh(3, 3)
mesh.init(2, 0)
ncells = mesh.num_cells()
f = MeshValueCollection("int", mesh, 0)
all_new = True
for cell in cells(mesh):
value = ncells - cell.index()
for i, vert in enumerate(vertices(cell)):
all_new = all_new and f.set_value(cell.index(), i, value+i)
g = MeshValueCollection("int", mesh, 0)
g.assign(f)
assert ncells*3 == f.size()
assert ncells*3 == g.size()
assert all_new
for cell in cells(mesh):
value = ncells - cell.index()
for i, vert in enumerate(vertices(cell)):
assert value+i == g.get_value(cell.index(), i)
def test_mesh_function_assign_2D_cells():
mesh = UnitSquareMesh(3, 3)
ncells = mesh.num_cells()
f = MeshFunction("int", mesh, mesh.topology().dim())
for cell in cells(mesh):
f[cell] = ncells - cell.index()
g = MeshValueCollection("int", mesh, 2)
g.assign(f)
assert ncells == f.size()
assert ncells == g.size()
f2 = MeshFunction("int", mesh, g)
for cell in cells(mesh):
value = ncells - cell.index()
assert value == g.get_value(cell.index(), 0)
assert f2[cell] == g.get_value(cell.index(), 0)
h = MeshValueCollection("int", mesh, 2)
global_indices = mesh.topology().global_indices(2)
ncells_global = mesh.num_entities_global(2)
for cell in cells(mesh):
if global_indices[cell.index()] in [5, 8, 10]:
continue
value = ncells_global - global_indices[cell.index()]
h.set_value(cell.index(), int(value))
f3 = MeshFunction("int", mesh, h)
values = f3.array()
values[values > ncells_global] = 0.
info(str(values))
info(str(values.sum()))
assert MPI.sum(mesh.mpi_comm(), values.sum()*1.0) == 140.
def test_mesh_function_assign_2D_facets():
mesh = UnitSquareMesh(3, 3)
mesh.init(1)
f = MeshFunction("int", mesh, mesh.topology().dim()-1, 25)
for cell in cells(mesh):
for i, facet in enumerate(facets(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(facets(cell)):
assert 25 == g.get_value(cell.index(), i)
f2 = MeshFunction("int", mesh, g)
for cell in cells(mesh):
for i, facet in enumerate(facets(cell)):
assert f2[facet] == g.get_value(cell.index(), i)
def test_mesh_function_assign_2D_vertices():
mesh = UnitSquareMesh(3, 3)
mesh.init(0)
f = MeshFunction("int", mesh, 0, 25)
g = MeshValueCollection("int", mesh, 0)
g.assign(f)
assert mesh.num_vertices() == f.size()
assert mesh.num_cells()*3 == g.size()
f2 = MeshFunction("int", mesh, g)
for cell in cells(mesh):
for i, vert in enumerate(vertices(cell)):
assert 25 == g.get_value(cell.index(), i)
assert f2[vert] == g.get_value(cell.index(), i)
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