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"""Unit tests for parameter library"""
# Copyright (C) 2011 Anders Logg
#
# 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: 2011-03-28
# Last changed: 2014-05-30
import unittest
from dolfin import *
@unittest.skipIf(MPI.size(mpi_comm_world()) > 1, "Skipping unit test(s) not working in parallel")
class InputOutput(unittest.TestCase):
def test_simple(self):
# Create some parameters
p0 = Parameters("test")
p0.add("filename", "foo.txt")
p0.add("maxiter", 100)
p0.add("tolerance", 0.001)
p0.add("monitor_convergence", True)
# Save to file
f0 = File("test_parameters.xml")
f0 << p0
# Read from file
p1 = Parameters()
f1 = File("test_parameters.xml")
f1 >> p1
# Check values
self.assertEqual(p1.name(), "test")
self.assertEqual(p1["filename"], "foo.txt")
self.assertEqual(p1["maxiter"], 100)
self.assertEqual(p1["tolerance"], 0.001)
self.assertEqual(p1["monitor_convergence"], True)
def test_gzipped_simple(self):
# Create some parameters
p0 = Parameters("test")
p0.add("filename", "foo.txt")
p0.add("maxiter", 100)
p0.add("tolerance", 0.001)
p0.add("monitor_convergence", True)
# Save to file
f0 = File("test_parameters.xml.gz")
f0 << p0
# Read from file
p1 = Parameters()
f1 = File("test_parameters.xml.gz")
f1 >> p1
# Check values
self.assertEqual(p1.name(), "test")
self.assertEqual(p1["filename"], "foo.txt")
self.assertEqual(p1["maxiter"], 100)
self.assertEqual(p1["tolerance"], 0.001)
self.assertEqual(p1["monitor_convergence"], True)
def test_nested(self):
# Create some nested parameters
p0 = Parameters("test")
p00 = Parameters("sub0")
p00.add("filename", "foo.txt")
p00.add("maxiter", 100)
p00.add("tolerance", 0.001)
p00.add("monitor_convergence", True)
p0.add("foo", "bar")
p01 = Parameters(p00);
p01.rename("sub1");
p0.add(p00)
p0.add(p01)
# Save to file
f0 = File("test_parameters.xml")
f0 << p0
# Read from file
p1 = Parameters()
f1 = File("test_parameters.xml")
f1 >> p1
# Check values
self.assertEqual(p1.name(), "test")
self.assertEqual(p1["foo"], "bar")
self.assertEqual(p1["sub0"]["filename"], "foo.txt")
self.assertEqual(p1["sub0"]["maxiter"], 100)
self.assertEqual(p1["sub0"]["tolerance"], 0.001)
self.assertEqual(p1["sub0"]["monitor_convergence"], True)
def test_nested_read_existing(self):
"""Test that we can read in a nested parameter database into
an existing (and matching) parameter database"""
file = File("test_parameters.xml")
file << parameters
p = Parameters("test")
file >> p
file >> p
def test_solver_parameters(self):
"Test that global parameters are propagated to solvers"
# Record default values so we can change back
absolute_tolerance = parameters["krylov_solver"]["absolute_tolerance"]
reuse_factorization = parameters["lu_solver"]["reuse_factorization"]
# Set global parameters
parameters["krylov_solver"]["absolute_tolerance"] = 1.23456
parameters["lu_solver"]["reuse_factorization"] = True
# Create solvers
krylov_solver = KrylovSolver()
lu_solver = LUSolver()
# Check that parameters propagate to solvers
self.assertEqual(krylov_solver.parameters["absolute_tolerance"], 1.23456)
self.assertEqual(lu_solver.parameters["reuse_factorization"], True)
# Reset parameters so that other tests will continue to work
parameters["krylov_solver"]["absolute_tolerance"] = absolute_tolerance
parameters["lu_solver"]["reuse_factorization"] = reuse_factorization
if __name__ == "__main__":
print ""
print "Testing parameter library"
print "------------------------------------------------"
unittest.main()
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