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"""Unit tests for the FunctionAssigner class"""
# Copyright (C) 2013 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: 2013-11-07
# Last changed: 2013-11-07
import pytest
from dolfin import *
import numpy as np
from dolfin_utils.test import fixture as fixt
@fixt
def mesh():
return UnitCubeMesh(8, 8, 8)
@fixt
def V(mesh):
return FunctionSpace(mesh, "CG", 1)
@fixt
def Q(mesh):
return FunctionSpace(mesh, "CG", 2)
@fixt
def W(mesh):
return VectorFunctionSpace(mesh, "CG", 1)
@fixt
def QQ(mesh):
return VectorFunctionSpace(mesh, "CG", 2)
@fixt
def R(mesh):
return FunctionSpace(mesh, "R", 0)
@fixt
def RR(mesh):
return VectorFunctionSpace(mesh, "R", 0)
@fixt
def QQV(mesh):
QQ = VectorElement("CG", mesh.ufl_cell(), 2)
V = FiniteElement("CG", mesh.ufl_cell(), 1)
return FunctionSpace(mesh, QQ*V)
@fixt
def WW(mesh):
W = VectorElement("CG", mesh.ufl_cell(), 1)
return FunctionSpace(mesh, W*W)
@fixt
def WR(mesh):
W = VectorElement("CG", mesh.ufl_cell(), 1)
R = FiniteElement("R", mesh.ufl_cell(), 0)
return FunctionSpace(mesh, W*R)
@fixt
def WRR(mesh):
W = VectorElement("CG", mesh.ufl_cell(), 1)
RR = VectorElement("R", mesh.ufl_cell(), 0)
return FunctionSpace(mesh, W*RR)
@fixt
def u0(V):
u0_ = Function(V)
u0_.vector()[:] = 1.
return u0_
@fixt
def u1(V):
u1_ = Function(V)
u1_.vector()[:] = 2.
return u1_
@fixt
def u2(V):
u2_ = Function(V)
u2_.vector()[:] = 3.
return u2_
@fixt
def r(R):
r_ = Function(R)
r_.vector()[:] = 3.
return r_
@fixt
def rr(RR):
rr_ = Function(RR)
rr_.vector()[:] = 2.
return rr_
@fixt
def w(W):
w_ = Function(W)
w_.vector()[:] = 4.
return w_
@fixt
def ww(WW):
ww_ = Function(WW)
ww_.vector()[:] = 5.
return ww_
@fixt
def wr(WR):
wr_ = Function(WR)
wr_.vector()[:] = 6.
return wr_
@fixt
def wrr(WRR):
wrr_ = Function(WRR)
wrr_.vector()[:] = 7.
return wrr_
@fixt
def q(Q):
q_ = Function(Q)
q_.vector()[:] = 1.
return q_
@fixt
def qq(QQ):
qq_ = Function(QQ)
qq_.vector()[:] = 2.
return qq_
@fixt
def qqv(QQV):
qqv_ = Function(QQV)
qqv_.vector()[:] = 3.
return qqv_
def test_1_1_assigner(w, ww, wr, wrr, q, r, qqv, u0, u1, u2, W, V, WW):
assigner = FunctionAssigner(W.sub(0), V)
assigner.assign(w.sub(0), u0)
assert np.all(w.sub(0, deepcopy=True).vector().get_local() == u0.vector().get_local())
assign(w.sub(2), u2)
assert np.all(w.sub(2, deepcopy=True).vector().get_local() == u2.vector().get_local())
assigner = FunctionAssigner(V, W.sub(2))
assigner.assign(u0, w.sub(2))
assert np.all(u0.vector().get_local() == w.sub(2, deepcopy=True).vector().get_local())
assign(u1, w.sub(1))
assert np.all(u1.vector().get_local() == w.sub(1, deepcopy=True).vector().get_local())
assigner = FunctionAssigner(WW.sub(0), W)
assigner.assign(ww.sub(0), w)
assign(wr.sub(0), w)
assert np.all(wr.sub(0, deepcopy=True).vector().get_local() == w.vector().get_local())
assign(wr.sub(1), r)
assert np.all(wr.sub(1, deepcopy=True).vector().get_local() == r.vector().get_local())
assign(qqv.sub(0).sub(0), q)
assert np.all(qqv.sub(0).sub(0, deepcopy=True).vector().get_local() == q.vector().get_local())
with pytest.raises(RuntimeError):
assign(qqv.sub(0), q)
with pytest.raises(RuntimeError):
assign(qqv.sub(1), q)
with pytest.raises(RuntimeError):
assign(wrr.sub(1), w)
def test_N_1_assigner(u0, u1, u2, qq, qqv, rr, w, wrr, r, W, V):
vv = Function(W)
assigner = FunctionAssigner(W, [V,V,V])
assigner.assign(vv, [u0, u1, u2])
assert np.all(vv.sub(0, deepcopy=True).vector().get_local() == u0.vector().get_local())
assert np.all(vv.sub(1, deepcopy=True).vector().get_local() == u1.vector().get_local())
assert np.all(vv.sub(2, deepcopy=True).vector().get_local() == u2.vector().get_local())
assign(qqv, [qq, u1])
assert np.all(qqv.sub(0, deepcopy=True).vector().get_local() == qq.vector().get_local())
assert np.all(qqv.sub(1, deepcopy=True).vector().get_local() == u1.vector().get_local())
assign(wrr, [w, rr])
assert np.all(wrr.sub(0, deepcopy=True).vector().get_local() == w.vector().get_local())
assert np.all(wrr.sub(1, deepcopy=True).vector().get_local() == rr.vector().get_local())
with pytest.raises(RuntimeError):
assign(qqv, [qq, u1, u1])
with pytest.raises(RuntimeError):
assign(wrr, [w, r, r])
def test_1_N_assigner(u0, u1, u2, w, qq, qqv, V, W):
assigner = FunctionAssigner([V,V,V], W)
assigner.assign([u0, u1, u2], w)
assert np.all(w.sub(0, deepcopy=True).vector().get_local() == u0.vector().get_local())
assert np.all(w.sub(1, deepcopy=True).vector().get_local() == u1.vector().get_local())
assert np.all(w.sub(2, deepcopy=True).vector().get_local() == u2.vector().get_local())
assign([qq, u1], qqv)
assert np.all(qqv.sub(0, deepcopy=True).vector().get_local() == qq.vector().get_local())
assert np.all(qqv.sub(1, deepcopy=True).vector().get_local() == u1.vector().get_local())
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