/usr/lib/python2.7/dist-packages/fabio/test/testfabioimage.py is in python-fabio 0.3.0+dfsg-1build1.
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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 | #!/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/>.
#
"""
Test cases for the fabioimage class
testsuite by Jerome Kieffer (Jerome.Kieffer@esrf.eu)
28/11/2014
"""
from __future__ import print_function, with_statement, division, absolute_import
import unittest
import sys
import os
import numpy
import gzip
import bz2
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.fabioimage import fabioimage
from fabio.fabioutils import six
class test50000(unittest.TestCase):
""" test with 50000 everywhere"""
def setUp(self):
"""make the image"""
dat = numpy.ones((1024, 1024), numpy.uint16)
dat = (dat * 50000).astype(numpy.uint16)
assert dat.dtype.char == numpy.ones((1), numpy.uint16).dtype.char
hed = {"Title": "50000 everywhere"}
self.obj = fabioimage(dat, hed)
def testgetmax(self):
"""check max"""
self.assertEqual(self.obj.getmax(), 50000)
def testgetmin(self):
"""check min"""
self.assertEqual(self.obj.getmin(), 50000)
def testgetmean(self):
"""check mean"""
self.assertEqual(self.obj.getmean(), 50000)
def getstddev(self):
"""check stddev"""
self.assertEqual(self.obj.getstddev(), 0)
class testslices(unittest.TestCase):
"""check slicing"""
def setUp(self):
"""make test data"""
dat2 = numpy.zeros((1024, 1024), numpy.uint16)
hed = {"Title": "zeros and 100"}
self.cord = [256, 256, 790, 768]
self.obj = fabioimage(dat2, hed)
self.slic = slic = self.obj.make_slice(self.cord)
# Note - d2 is modified *after* fabioimage is made
dat2[slic] = dat2[slic] + 100
assert self.obj.maxval is None
assert self.obj.minval is None
self.npix = (slic[0].stop - slic[0].start) * \
(slic[1].stop - slic[1].start)
def testgetmax(self):
"""check max"""
self.assertEqual(self.obj.getmax(), 100)
def testgetmin(self):
"""check min"""
self.assertEqual(self.obj.getmin(), 0)
def testintegratearea(self):
""" check integrations"""
self.obj.resetvals()
area1 = self.obj.integrate_area(self.cord)
self.obj.resetvals()
area2 = self.obj.integrate_area(self.slic)
self.assertEqual(area1, area2)
self.assertEqual(area1, self.npix * 100)
def testRebin(self):
"""Test the rebin method"""
big = numpy.arange(64).reshape((8, 8))
res = numpy.array([[13, 17], [45, 49]])
fabimg = fabioimage(data=big, header={})
fabimg.rebin(4, 4)
self.assertEqual(abs(res - fabimg.data).max(), 0, "data are the same after rebin")
class testopen(unittest.TestCase):
"""check opening compressed files"""
testfile = os.path.join(UtilsTest.tempdir, "testfile")
def setUp(self):
""" create test files"""
if not os.path.isfile(self.testfile):
open(self.testfile, "wb").write(b"{ hello }")
if not os.path.isfile(self.testfile + ".gz"):
gzip.open(self.testfile + ".gz", "wb").write(b"{ hello }")
if not os.path.isfile(self.testfile + ".bz2"):
bz2.BZ2File(self.testfile + ".bz2", "wb").write(b"{ hello }")
self.obj = fabioimage()
def testFlat(self):
""" no compression"""
res = self.obj._open(self.testfile).read()
self.assertEqual(res, b"{ hello }")
def testgz(self):
""" gzipped """
res = self.obj._open(self.testfile + ".gz").read()
self.assertEqual(res, b"{ hello }")
def testbz2(self):
""" bzipped"""
res = self.obj._open(self.testfile + ".bz2").read()
self.assertEqual(res, b"{ hello }")
NAMES = {numpy.uint8: "numpy.uint8",
numpy.int8: "numpy.int8" ,
numpy.uint16: "numpy.uint16",
numpy.int16: "numpy.int16" ,
numpy.uint32: "numpy.uint32" ,
numpy.int32: "numpy.int32" ,
numpy.float32: "numpy.float32" ,
numpy.float64: "numpy.float64"}
class testPILimage(unittest.TestCase):
""" check PIL creation"""
def setUp(self):
""" list of working numeric types"""
self.okformats = [numpy.uint8,
numpy.int8,
numpy.uint16,
numpy.int16,
numpy.uint32,
numpy.int32,
numpy.float32]
def mkdata(self, shape, typ):
""" generate [01] testdata """
return (numpy.random.random(shape)).astype(typ)
def testpil(self):
for typ in self.okformats:
name = NAMES[typ]
for shape in [(10, 20), (431, 1325)]:
testdata = self.mkdata(shape, typ)
img = fabioimage(testdata, {"title":"Random data"})
pim = img.toPIL16()
for i in [ 0, 5, 6, shape[1] - 1 ]:
for j in [0, 5, 7, shape[0] - 1 ]:
errstr = name + " %d %d %f %f t=%s" % (
i, j, testdata[j, i], pim.getpixel((i, j)), typ)
er1 = img.data[j, i] - pim.getpixel((i, j))
er2 = img.data[j, i] + pim.getpixel((i, j))
# difference as % error in case of rounding
if er2 != 0.:
err = er1 / er2
else:
err = er1
self.assertAlmostEquals(err, 0, 6, errstr)
class testPILimage2(testPILimage):
""" check with different numbers"""
def mkdata(self, shape, typ):
""" positive and big"""
return (numpy.random.random(shape) * sys.maxsize / 10).astype(typ)
class testPILimage3(testPILimage):
""" check with different numbers"""
def mkdata(self, shape, typ):
""" positive, negative and big"""
return ((numpy.random.random(shape) - 0.5) * sys.maxsize / 10).astype(typ)
def suite():
testsuite = unittest.TestSuite()
testsuite.addTest(test50000("testgetmax"))
testsuite.addTest(test50000("testgetmin"))
testsuite.addTest(test50000("testgetmean"))
testsuite.addTest(test50000("getstddev"))
testsuite.addTest(testslices("testgetmax"))
testsuite.addTest(testslices("testgetmin"))
testsuite.addTest(testslices("testintegratearea"))
testsuite.addTest(testslices("testRebin"))
testsuite.addTest(testopen("testFlat"))
testsuite.addTest(testopen("testgz"))
testsuite.addTest(testopen("testbz2"))
if fabio.fabioimage.Image is not None:
testsuite.addTest(testPILimage("testpil"))
testsuite.addTest(testPILimage2("testpil"))
testsuite.addTest(testPILimage3("testpil"))
else:
logger.warning("Skipping PIL related tests")
return testsuite
if __name__ == '__main__':
runner = unittest.TextTestRunner()
runner.run(suite())
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