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test_pybind.py
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Wed, Oct 9, 12:45

test_pybind.py
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""" test_pybind.py: Test the pybind interface"""
__author__ = "Guillaume Anciaux and Nicolas Richart"
__credits__ = [
"Guillaume Anciaux <guillaume.anciaux@epfl.ch>",
"Nicolas Richart <nicolas.richart@epfl.ch>",
]
__copyright__ = "Copyright (©) 2018-2021 EPFL (Ecole Polytechnique Fédérale" \
" de Lausanne) Laboratory (LSMS - Laboratoire de Simulation" \
" en Mécanique des Solides)"
__license__ = "LGPLv3"
#!/bin/env python
import pytest
import numpy as np
import akantu as aka
import py11_akantu_test_common as aka_test
def test_array_size():
ptr, array = aka_test.createArray(1000, 3)
assert array.shape == (1000, 3)
def test_array_nocopy():
ptr, array = aka_test.createArray(1000, 3)
through_python = aka_test.getRawPointerArray(array)
assert(ptr == through_python)
def test_modify_array():
ptr, array = aka_test.createArray(3, 3)
array[0, :] = (1., 2., 3.)
array2 = aka_test.getArray(ptr)
assert(np.linalg.norm(array-array2) < 1e-15)
for i in [1, 2, 3]:
ptr, array = aka_test.createArray(10000, i)
array[:, :] = np.random.random((10000, i))
array2 = aka_test.getArray(ptr)
assert(np.linalg.norm(array-array2) < 1e-15)
def test_array_copy():
ptr, array = aka_test.createArray(1000, 3)
array2 = aka_test.copyArray(ptr)
ptr2 = aka_test.getRawPointerArray(array2)
assert(ptr != ptr2)
def test_vector_size():
ptr, vector = aka_test.createVector(3)
assert vector.shape == (3,)
def test_vector_nocopy():
ptr, vector = aka_test.createVector(3)
through_python = aka_test.getRawPointerVector(vector)
assert(ptr == through_python)
def test_modify_vector():
ptr, vector = aka_test.createVector(3)
vector[:] = (1., 2., 3.)
vector2 = aka_test.getVector(ptr)
assert(np.linalg.norm(vector-vector2) < 1e-15)
for i in np.arange(1, 10):
ptr, vector = aka_test.createVector(i)
vector[:] = np.random.random(i)
vector2 = aka_test.getVector(ptr)
assert(np.linalg.norm(vector-vector2) < 1e-15)
def test_vector_copy():
ptr, vector = aka_test.createVector(1000)
vector2 = aka_test.copyVector(ptr)
ptr2 = aka_test.getRawPointerVector(vector2)
assert(ptr != ptr2)
def test_matrix_size():
ptr, matrix = aka_test.createMatrix(3, 2)
assert matrix.shape == (3, 2)
def test_matrix_nocopy():
ptr, matrix = aka_test.createMatrix(3, 2)
through_python = aka_test.getRawPointerMatrix(matrix)
assert(ptr == through_python)
def test_modify_matrix():
ptr, matrix = aka_test.createMatrix(2, 3)
matrix[0, :] = (1., 2., 3.)
matrix2 = aka_test.getMatrix(ptr)
assert(np.linalg.norm(matrix-matrix2) < 1e-15)
for i in np.arange(1, 10):
for j in np.arange(1, 10):
ptr, matrix = aka_test.createMatrix(i, j)
matrix[:, :] = np.random.random((i, j))
matrix2 = aka_test.getMatrix(ptr)
assert(np.linalg.norm(matrix-matrix2) < 1e-15)
def test_matrix_copy():
ptr, matrix = aka_test.createMatrix(10, 3)
matrix2 = aka_test.copyMatrix(ptr)
ptr2 = aka_test.getRawPointerMatrix(matrix2)
assert(ptr != ptr2)
def test_multiple_init():
aka.parseInput("elastic.dat")
dcb_mesh = 'mesh_dcb_2d.msh'
mesh = aka.Mesh(2)
mesh.read(dcb_mesh)
model = aka.SolidMechanicsModel(mesh)
model.initFull(aka.SolidMechanicsModelOptions(aka._static))
del model
del mesh
mesh = aka.Mesh(2)
mesh.read(dcb_mesh)
model = aka.SolidMechanicsModel(mesh)
model.initFull(aka.SolidMechanicsModelOptions(aka._static))
del model
del mesh
def test_boundary_condition_functors():
class FixedValue(aka.DirichletFunctor):
def __init__(self, value, axis):
super().__init__(axis)
self.value = value
self.axis = int(axis)
def __call__(self, node, flags, primal, coord):
primal[self.axis] = self.value
flags[self.axis] = True
class FromStress(aka.NeumannFunctor):
def __init__(self, stress):
super().__init__()
self.stress = stress
def __call__(self, quad_point, dual, coord, normals):
dual[:] = np.dot(self.stress, normals)
aka.parseInput("elastic.dat")
mesh = aka.Mesh(2)
mesh.read("mesh_dcb_2d.msh")
model = aka.SolidMechanicsModel(mesh, 2)
model.initFull()
model.applyBC(FixedValue(0.0, aka._x), "edge")
stress = np.array([[1, 0],
[0, 0]])
blocked_nodes = \
mesh.getElementGroup("edge").getNodeGroup().getNodes().flatten()
boundary = model.getBlockedDOFs()
# Testing that nodes are correctly blocked
for n in blocked_nodes:
assert boundary[n, 0]
boundary.fill(False)
model.applyBC(FromStress(stress), "edge")
force = model.getExternalForce()
# Checking that nodes have a force in the correct direction
for n in blocked_nodes:
assert force[n, 0] > 0
return 0
def test_mesh_interface():
mesh = aka.Mesh(2)
mesh.read("mesh_dcb_2d.msh")
# Tests the getNbElement() function
if mesh.getNbElement(aka._quadrangle_8) != mesh.getNbElement(2):
raise Exception("Number of elements wrong: "
" {0} != {1}".format(
mesh.getNbElement(aka._quadrangle_8),
mesh.getNbElement(2)))
def test_heat_transfer():
mesh = aka.Mesh(2)
model = aka.HeatTransferModel(mesh)
print(aka._explicit_lumped_mass)
model.initFull(aka._explicit_lumped_mass)
if __name__ == '__main__':
import sys
pytest.main(sys.argv)

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