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#!/usr/bin/env python
# coding: utf-8
#
# Project: Azimuthal integration
# https://github.com/silx-kit/pyFAI
#
# Copyright (C) 2017-2018 European Synchrotron Radiation Facility, Grenoble, France
#
# Principal author: Jérôme Kieffer (Jerome.Kieffer@ESRF.eu)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""Test suite for Goniometer class and associated
"""
__author__ = "Jérôme Kieffer"
__contact__ = "Jérôme.Kieffer@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
__date__ = "16/10/2020"
import os
import unittest
import logging
from .utilstest import UtilsTest
logger = logging.getLogger(__name__)
import numpy
from ..goniometer import GeometryTranslation, Goniometer, numexpr
@unittest.skipUnless(numexpr, "Numexpr package is missing")
class TestTranslation(unittest.TestCase):
"""
Test the proper working of the translation class
"""
def setUp(self):
unittest.TestCase.setUp(self)
self.gt = GeometryTranslation(pos_names=["pos_dist", "pos_angle"],
param_names=["dist_scale", "dist_offset",
"poni1", "poni2", "rot1",
"rot2_scale", "rot2_offset"],
dist_expr="pos_dist * dist_scale + dist_offset",
poni1_expr="poni1",
poni2_expr="poni2",
rot1_expr="rot1",
rot2_expr="pos_angle * rot2_scale + rot2_offset",
rot3_expr="0.0",
)
def tearDown(self):
unittest.TestCase.tearDown(self)
self.gt = None
@staticmethod
def reference_function(gonio_params, motor_pos):
"""1-axis goniometer (vertical) with 1 translation on the distance
:param gonio_params: 7 parameter model dist_scale, dist_offset, poni1,
poni2, rot1, rot2_scale, rot2_offset
:param motor_pos: 2 parameters of the gonio: distance, angle
:return 6-tuple representing pyFAI geometry
"""
pos_dist, pos_angle = motor_pos
dist_scale, dist_offset, poni1, poni2, rot1, rot2_scale, rot2_offset = gonio_params
dist = pos_dist * dist_scale + dist_offset
rot2 = pos_angle * rot2_scale + rot2_offset
return dist, poni1, poni2, rot1, rot2, 0
def test_serialize(self):
# this is just to increase coverage
str(self.gt)
dico = self.gt.to_dict()
new_gt = GeometryTranslation(**dico)
self.assertEqual(str(self.gt), str(new_gt), "serialized have the same representation")
def test_equivalent(self):
pos = numpy.random.random(size=len(self.gt.pos_names))
param = numpy.random.random(size=len(self.gt.param_names))
ref = numpy.array(self.reference_function(param, pos))
obt = numpy.array(self.gt(param, pos))
eps = abs(ref - obt).max()
self.assertLess(eps, 1e-10, "Numexpr results looks OK.")
def test_goniometer(self):
g = Goniometer([1., 2., 3., 4., 5., 6., 7.], self.gt, "pilatus100k")
fname = os.path.join(UtilsTest.tempdir, "gonio.json")
g.save(fname)
self.assertTrue(os.path.exists(fname), "json file written")
g2 = Goniometer.sload(fname)
self.assertEqual(str(g), str(g2), "goniometer description are the same")
ai = g2.get_ai((1, 2))
str(ai)
mg = g.get_mg([(1, 2), (2, 3)])
str(mg)
if os.path.exists(fname):
os.unlink(fname)
def suite():
loader = unittest.defaultTestLoader.loadTestsFromTestCase
testsuite = unittest.TestSuite()
testsuite.addTest(loader(TestTranslation))
return testsuite
if __name__ == '__main__':
runner = unittest.TextTestRunner()
runner.run(suite())
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