/usr/lib/python2.7/dist-packages/fabio/test/testcompression.py is in python-fabio 0.3.0+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | #!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Project: Fable Input Output
# https://github.com/kif/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/>.
#
"""
# Unit tests
Updated by Jerome Kieffer (jerome.kieffer@esrf.eu), 2011
28/11/2014
"""
from __future__ import absolute_import, print_function, with_statement, division
import unittest
import sys
import os
import numpy
if __name__ == '__main__':
import pkgutil
__path__ = pkgutil.extend_path([os.path.dirname(__file__)], "fabio.test")
from .utilstest import UtilsTest
logger = UtilsTest.get_logger(__file__)
fabio = sys.modules["fabio"]
from fabio import compression
class TestByteOffset(unittest.TestCase):
"""
test the byte offset compression and decompression
"""
def setUp(self):
self.ds = numpy.array([0, 1, 2, 127, 0, 1, 2, 128, 0, 1, 2, 32767, 0, 1, 2, 32768, 0, 1, 2, 2147483647, 0, 1, 2, 2147483648, 0, 1, 2, 128, 129, 130, 32767, 32768, 128, 129, 130, 32768, 2147483647, 2147483648])
self.ref = b'\x00\x01\x01}\x81\x01\x01~\x80\x80\xff\x01\x01\x80\xfd\x7f\x80\x01\x80\x01\x01\x80\xfe\x7f\x80\x00\x80\x00\x80\xff\xff\x01\x01\x80\x00\x80\xfd\xff\xff\x7f\x80\x00\x80\x01\x00\x00\x80\x01\x01\x80\x00\x80\xfe\xff\xff\x7f\x80\x00\x80\x00\x00\x00\x80\x00\x00\x00\x80\xff\xff\xff\xff\x01\x01~\x01\x01\x80}\x7f\x01\x80\x80\x80\x01\x01\x80~\x7f\x80\x00\x80\xff\x7f\xff\x7f\x01'
def tearDown(self):
unittest.TestCase.tearDown(self)
self.ds = self.ref = None
def testComp(self):
"""
"""
ds = numpy.array([0, 128])
ref = b"\x00\x80\x80\00"
self.assertEqual(ref, compression.compByteOffset_numpy(ds), "test +128")
ds = numpy.array([0, -128])
ref = b'\x00\x80\x80\xff'
self.assertEqual(ref, compression.compByteOffset_numpy(ds), "test -128")
ds = numpy.array([10, -128])
ref = b'\n\x80v\xff'
self.assertEqual(ref, compression.compByteOffset_numpy(ds), "test +10 -128")
self.assertEqual(self.ref, compression.compByteOffset_numpy(self.ds) , "test larger")
def testSC(self):
"""test that datasets are unchanged after various comression/decompressions"""
obt_np = compression.decByteOffset_numpy(compression.compByteOffset_numpy(self.ds))
self.assertEqual(abs(self.ds - obt_np).max(), 0.0, "numpy algo")
obt_cy = compression.decByteOffset_cython(compression.compByteOffset_numpy(self.ds))
self.assertEqual(abs(self.ds - obt_cy).max(), 0.0, "cython algo")
obt_cy2 = compression.decByteOffset_cython(compression.compByteOffset_numpy(self.ds), self.ds.size)
self.assertEqual(abs(self.ds - obt_cy2).max(), 0.0, "cython algo_orig")
# obt_we = compression.decByteOffset_weave(compression.compByteOffset_numpy(self.ds), self.ds.size)
# self.assertEqual(abs(self.ds - obt_we).max(), 0.0, "weave algo")
def suite():
testsuite = unittest.TestSuite()
testsuite.addTest(TestByteOffset("testSC"))
testsuite.addTest(TestByteOffset("testComp"))
return testsuite
if __name__ == '__main__':
runner = unittest.TextTestRunner()
runner.run(suite())
|