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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Project: Fable Input Output
# https://github.com/silx-kit/fabio
#
# Copyright (C) European Synchrotron Radiation Facility, Grenoble, France
#
# Principal author: Jérôme Kieffer (Jerome.Kieffer@ESRF.eu)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""
Test for numpy images.
"""
__author__ = "Jérôme Kieffer"
__date__ = "16/06/2016"
import os
import sys
import unittest
if __name__ == '__main__':
import pkgutil
__path__ = pkgutil.extend_path([os.path.dirname(__file__)], "fabio.test")
from .utilstest import UtilsTest
import numpy
logger = UtilsTest.get_logger(__file__)
fabio = sys.modules["fabio"]
from fabio.numpyimage import NumpyImage
from fabio.openimage import openimage
class TestNumpy(unittest.TestCase):
"""basic test"""
def setUp(self):
"""Generate files"""
self.ary = numpy.random.randint(0, 6500, size=99).reshape(11, 9).astype("uint16")
self.fn = os.path.join(UtilsTest.tempdir, "numpy.npy")
self.fn2 = os.path.join(UtilsTest.tempdir, "numpy2.npy")
numpy.save(self.fn, self.ary)
def tearDown(self):
unittest.TestCase.tearDown(self)
for i in (self.fn, self.fn2):
if os.path.exists(i):
os.unlink(i)
self.ary = self.fn = self.fn2 = None
def test_read(self):
""" check we can read pnm images"""
obj = openimage(self.fn)
self.assertEqual(obj.bytecode, numpy.uint16, msg="bytecode is OK")
self.assertEqual(9, obj.dim1, "dim1")
self.assertEqual(11, obj.dim2, "dim2")
self.assert_(numpy.allclose(obj.data, self.ary), "data")
def test_write(self):
""" check we can write numpy images"""
ref = NumpyImage(data=self.ary)
ref.save(self.fn2)
obj = openimage(self.fn2)
self.assertEqual(obj.bytecode, numpy.uint16, msg="bytecode is OK")
self.assertEqual(9, obj.dim1, "dim1")
self.assertEqual(11, obj.dim2, "dim2")
self.assert_(numpy.allclose(obj.data, self.ary), "data")
def test_multidim(self):
for shape in (10,), (10, 15), (10, 15, 20), (10, 15, 20, 25):
ary = numpy.random.random(shape).astype("float32")
numpy.save(self.fn, ary)
obj = openimage(self.fn)
self.assertEqual(obj.bytecode, numpy.float32, msg="bytecode is OK")
self.assertEqual(shape[-1], obj.dim1, "dim1")
dim2 = 1 if len(shape) == 1 else shape[-2]
self.assertEqual(dim2, obj.dim2, "dim2")
nframes = 1
if len(shape) > 2:
for i in shape[:-2]:
nframes *= i
self.assertEqual(nframes, obj.nframes, "nframes")
if os.path.exists(self.fn):
os.unlink(self.fn)
def suite():
testsuite = unittest.TestSuite()
testsuite.addTest(TestNumpy("test_read"))
testsuite.addTest(TestNumpy("test_write"))
testsuite.addTest(TestNumpy("test_multidim"))
return testsuite
if __name__ == '__main__':
runner = unittest.TextTestRunner()
runner.run(suite())
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