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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
#!/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)
#
# 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.
#
# Get ready for python3:
from __future__ import with_statement, print_function, division
__authors__ = ["Jérôme Kieffer"]
__contact__ = "Jerome.Kieffer@esrf.fr"
__license__ = "MIT"
__copyright__ = "2011-2016 ESRF"
__date__ = "12/07/2016"
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):
"""
"""
# first with numpy
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")
# Then with cython 32 bits
ds = numpy.array([0, 128], dtype="int32")
ref = b"\x00\x80\x80\00"
self.assertEqual(ref, compression.compByteOffset_cython(ds), "test +128")
ds = numpy.array([0, -128], dtype="int32")
ref = b'\x00\x80\x80\xff'
self.assertEqual(ref, compression.compByteOffset_cython(ds), "test -128")
ds = numpy.array([10, -128], dtype="int32")
ref = b'\n\x80v\xff'
self.assertEqual(ref, compression.compByteOffset_cython(ds), "test +10 -128")
self.assertEqual(self.ref, compression.compByteOffset_cython(self.ds) , "test larger")
# Then with cython 64bits
ds = numpy.array([0, 128], dtype="int64")
ref = b"\x00\x80\x80\00"
self.assertEqual(ref, compression.compByteOffset_cython(ds), "test +128")
ds = numpy.array([0, -128], dtype="int64")
ref = b'\x00\x80\x80\xff'
self.assertEqual(ref, compression.compByteOffset_cython(ds), "test -128")
ds = numpy.array([10, -128], dtype="int64")
ref = b'\n\x80v\xff'
self.assertEqual(ref, compression.compByteOffset_cython(ds), "test +10 -128")
self.assertEqual(self.ref, compression.compByteOffset_cython(self.ds) , "test larger")
def testSC(self):
"""test that datasets are unchanged after various compression/decompressions"""
obt_np = compression.decByteOffset_numpy(compression.compByteOffset_numpy(self.ds))
self.assertEqual(abs(self.ds - obt_np).max(), 0.0, "numpy-numpy algo")
obt_cy = compression.decByteOffset_cython(compression.compByteOffset_numpy(self.ds))
self.assertEqual(abs(self.ds - obt_cy).max(), 0.0, "cython-numpy algo")
obt_cy2 = compression.decByteOffset_cython(compression.compByteOffset_numpy(self.ds), self.ds.size)
self.assertEqual(abs(self.ds - obt_cy2).max(), 0.0, "cython2-numpy algo_orig")
obt_np = compression.decByteOffset_numpy(compression.compByteOffset_cython(self.ds))
self.assertEqual(abs(self.ds - obt_np).max(), 0.0, "numpy-numpy algo")
obt_cy = compression.decByteOffset_cython(compression.compByteOffset_cython(self.ds))
self.assertEqual(abs(self.ds - obt_cy).max(), 0.0, "cython-numpy algo")
obt_cy2 = compression.decByteOffset_cython(compression.compByteOffset_cython(self.ds), self.ds.size)
self.assertEqual(abs(self.ds - obt_cy2).max(), 0.0, "cython2-numpy algo_orig")
def suite():
testsuite = unittest.TestSuite()
testsuite.addTest(TestByteOffset("testSC"))
testsuite.addTest(TestByteOffset("testComp"))
return testsuite
if __name__ == '__main__':
runner = unittest.TextTestRunner()
runner.run(suite())
|
