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"""Unit tests for PeriodicBoundaryComputation"""
# Copyright (C) 2013 Mikael Mortensen
#
# 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: 2013-04-12
# Last changed: 2014-05-30
import pytest
import numpy as np
from dolfin import *
from dolfin_utils.test import *
@fixture
def periodic_boundary():
class PeriodicBoundary(SubDomain):
def inside(self, x, on_boundary):
return x[0] < DOLFIN_EPS
def map(self, x, y):
y[0] = x[0] - 1.0
y[1] = x[1]
return PeriodicBoundary()
@fixture
def mesh():
return UnitSquareMesh(4, 4)
@skip_in_parallel
def test_ComputePeriodicPairs(periodic_boundary, mesh):
# Verify that correct number of periodic pairs are computed
vertices = PeriodicBoundaryComputation.compute_periodic_pairs(mesh, periodic_boundary, 0)
edges = PeriodicBoundaryComputation.compute_periodic_pairs(mesh, periodic_boundary, 1)
assert len(vertices) == 5
assert len(edges) == 4
@skip_in_parallel
def test_MastersSlaves(periodic_boundary, mesh):
# Verify that correct number of masters and slaves are marked
mf = PeriodicBoundaryComputation.masters_slaves(mesh, periodic_boundary, 0)
assert len(np.where(mf.array() == 1)[0]) == 5
assert len(np.where(mf.array() == 2)[0]) == 5
mf = PeriodicBoundaryComputation.masters_slaves(mesh, periodic_boundary, 1)
assert len(np.where(mf.array() == 1)[0]) == 4
assert len(np.where(mf.array() == 2)[0]) == 4
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