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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 frame concept of FabioImage
"""
import unittest
import logging
import numpy
import contextlib
logger = logging.getLogger(__name__)
import fabio.fabioimage
import fabio.edfimage
import fabio.file_series
from .utilstest import UtilsTest
class _CommonTestFrames(unittest.TestCase):
"""Test generic tests which could append on frame iteration"""
@classmethod
def getMeta(cls):
return None
@classmethod
def setUpClass(cls):
cls.meta = cls.getMeta()
if cls.meta is None:
raise unittest.SkipTest("No data test")
@contextlib.contextmanager
def image(self):
if hasattr(self.meta, "image"):
image = self.meta.image
if image is not None:
yield image
return
image = fabio.open(self.meta.filename)
try:
yield image
finally:
image.close()
def test_frames_full_iteration(self):
with self.image() as image:
cache = {}
for i, frame in enumerate(image.frames()):
cache["data %d" % i] = numpy.array(frame.data)
cache["header %d" % i] = frame.header.copy()
self.assertEqual(i, frame.index)
self.assertEqual(i, self.meta.nframes - 1)
for i, frame in enumerate(image.frames()):
data = cache.pop("data %d" % i)
self.assertTrue(numpy.array_equal(data, frame.data))
header = cache.pop("header %d" % i)
self.assertEqual(header, frame.header)
self.assertEqual(i, frame.index)
self.assertEqual(len(cache), 0)
self.assertEqual(i, self.meta.nframes - 1)
self.assertEqual(image.nframes, self.meta.nframes)
def test_frames_abort_iteration(self):
with self.image() as image:
for i, _frame in enumerate(image.frames()):
if i == 2:
break
for i, _frame in enumerate(image.frames()):
pass
self.assertEqual(i, self.meta.nframes - 1)
self.assertEqual(image.nframes, self.meta.nframes)
def test_frames_random_access(self):
with self.image() as image:
nframes = self.meta.nframes
self.assertEqual(image.nframes, nframes)
# before last
frame2 = image._get_frame(nframes - 2)
# first
frame1 = image._get_frame(0)
# last
frame3 = image._get_frame(nframes - 1)
self.assertIsNotNone(frame1)
self.assertIsNotNone(frame2)
self.assertIsNotNone(frame3)
self.assertEqual(frame1.index, 0)
self.assertEqual(frame2.index, nframes - 2)
self.assertEqual(frame3.index, nframes - 1)
self.assertIsNot(frame1, frame2)
self.assertIsNot(frame2, frame3)
self.assertIsNot(frame3, frame1)
self.assertEqual(image.nframes, self.meta.nframes)
class TestVirtualEdf(_CommonTestFrames):
@classmethod
def getMeta(cls):
header1 = {"foo": "bar"}
data1 = numpy.array([[1, 1], [3, 4]], dtype=numpy.uint16)
header2 = {"foo": "bar2"}
data2 = numpy.array([[2, 2], [3, 4]], dtype=numpy.uint16)
header3 = {"foo": "bar2"}
data3 = numpy.array([[3, 3], [3, 4]], dtype=numpy.uint16)
image = fabio.edfimage.EdfImage(data=data1, header=header1)
image.append_frame(data=data2, header=header2)
image.append_frame(data=data3, header=header3)
frames = [(header1, data1), (header2, data2), (header3, data3)]
class Meta(object):
pass
meta = Meta()
meta.image = image
meta.nframes = 3
meta.frames = frames
return meta
def test_content(self):
image = self.meta.image
frames = self.meta.frames
for i, frame in enumerate(image.frames()):
header, data = frames[i]
if i in [0, 1, 2]:
self.assertIsInstance(frame, fabio.fabioimage.FabioFrame)
self.assertIs(frame.file_container, image)
self.assertEqual(frame.header["foo"], header["foo"])
self.assertEqual(frame.file_index, i)
self.assertEqual(frame.shape, data.shape)
self.assertEqual(frame.dtype, data.dtype)
self.assertEqual(frame.data[0, 0], i + 1)
self.assertTrue(numpy.array_equal(frame.data, data))
else:
self.fail()
class TestEdf(_CommonTestFrames):
@classmethod
def getMeta(cls):
filename = UtilsTest.getimage("multiframes.edf.bz2")
filename = filename.replace(".bz2", "")
image = fabio.open(filename)
class Meta(object):
pass
meta = Meta()
meta.image = image
meta.nframes = 8
return meta
def test_content(self):
image = self.meta.image
self.assertEqual(image.nframes, 8)
for i, frame in enumerate(image.frames()):
if 0 <= i < 8:
self.assertIsInstance(frame, fabio.fabioimage.FabioFrame)
self.assertIs(frame.file_container, image)
self.assertEqual(frame.file_index, i)
self.assertEqual(frame.data[0, 0], i)
self.assertEqual(frame.shape, (40, 20))
self.assertEqual(frame.dtype, numpy.dtype("uint16"))
else:
self.fail()
class TestTiff(_CommonTestFrames):
@classmethod
def getMeta(cls):
filename = UtilsTest.getimage("multiframes.tif.bz2")
filename = filename.replace(".bz2", "")
image = fabio.open(filename)
class Meta(object):
pass
meta = Meta()
meta.image = image
meta.nframes = 8
return meta
def test_content(self):
image = self.meta.image
self.assertEqual(image.nframes, 8)
for i, frame in enumerate(image.frames()):
if 0 <= i < 8:
self.assertIsInstance(frame, fabio.fabioimage.FabioFrame)
self.assertIs(frame.file_container, image)
self.assertEqual(frame.file_index, i)
self.assertEqual(frame.data[0, 0], i)
self.assertEqual(frame.shape, (40, 20))
self.assertEqual(frame.dtype, numpy.dtype("uint16"))
else:
self.fail()
class TestFabioImage(unittest.TestCase):
def test_single_frame_iterator(self):
data = numpy.array([[1, 2], [3, 4]], dtype=numpy.uint16)
image = fabio.fabioimage.FabioImage(data=data)
for i, frame in enumerate(image.frames()):
if i == 0:
self.assertIsInstance(frame, fabio.fabioimage.FabioFrame)
self.assertIs(frame.file_container, image)
self.assertEqual(frame.file_index, 0)
self.assertEqual(frame.shape, data.shape)
self.assertEqual(frame.dtype, data.dtype)
self.assertTrue(numpy.array_equal(frame.data, data))
else:
self.fail()
class TestFileSeries(_CommonTestFrames):
@classmethod
def getMeta(cls):
filenames = []
filename = UtilsTest.getimage("multiframes.tif.bz2")
filename = filename.replace(".bz2", "")
filenames.append(filename)
filename = UtilsTest.getimage("multiframes.edf.bz2")
filename = filename.replace(".bz2", "")
filenames.append(filename)
image = fabio.file_series.FileSeries(filenames)
class Meta(object):
pass
meta = Meta()
meta.image = image
meta.nframes = 8 * 2
return meta
def suite():
loadTests = unittest.defaultTestLoader.loadTestsFromTestCase
testsuite = unittest.TestSuite()
testsuite.addTest(loadTests(TestFabioImage))
testsuite.addTest(loadTests(TestVirtualEdf))
testsuite.addTest(loadTests(TestEdf))
testsuite.addTest(loadTests(TestTiff))
testsuite.addTest(loadTests(TestFileSeries))
return testsuite
if __name__ == '__main__':
runner = unittest.TextTestRunner()
runner.run(suite())
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