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Diffstat (limited to 'silx/gui/plot/test/testImageStack.py')
| -rw-r--r-- | silx/gui/plot/test/testImageStack.py | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/silx/gui/plot/test/testImageStack.py b/silx/gui/plot/test/testImageStack.py new file mode 100644 index 0000000..9c21469 --- /dev/null +++ b/silx/gui/plot/test/testImageStack.py @@ -0,0 +1,197 @@ +# coding: utf-8 +# /*########################################################################## +# +# Copyright (c) 2020 European Synchrotron Radiation Facility +# +# 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. +# +# ###########################################################################*/ +"""Basic tests for ImageStack""" + +__authors__ = ["H. Payno"] +__license__ = "MIT" +__date__ = "15/01/2020" + + +import unittest +import tempfile +import numpy +import h5py + +from silx.gui import qt +from silx.gui.utils.testutils import TestCaseQt +from silx.io.url import DataUrl +from silx.gui.plot.ImageStack import ImageStack +from silx.gui.utils.testutils import SignalListener +from collections import OrderedDict +import os +import time +import shutil + + +class TestImageStack(TestCaseQt): + """Simple test of the Image stack""" + + def setUp(self): + TestCaseQt.setUp(self) + self.urls = OrderedDict() + self._raw_data = {} + self._folder = tempfile.mkdtemp() + self._n_urls = 10 + file_name = os.path.join(self._folder, 'test_inage_stack_file.h5') + with h5py.File(file_name, 'w') as h5f: + for i in range(self._n_urls): + width = numpy.random.randint(10, 40) + height = numpy.random.randint(10, 40) + raw_data = numpy.random.random((width, height)) + self._raw_data[i] = raw_data + h5f[str(i)] = raw_data + self.urls[i] = DataUrl(file_path=file_name, + data_path=str(i), + scheme='silx') + self.widget = ImageStack() + + self.urlLoadedListener = SignalListener() + self.widget.sigLoaded.connect(self.urlLoadedListener) + + self.currentUrlChangedListener = SignalListener() + self.widget.sigCurrentUrlChanged.connect(self.currentUrlChangedListener) + + def tearDown(self): + shutil.rmtree(self._folder) + self.widget.setAttribute(qt.Qt.WA_DeleteOnClose, True) + self.widget.close() + TestCaseQt.setUp(self) + + def testControls(self): + """Test that selection using the url table and the slider are working + """ + self.widget.show() + self.assertEqual(self.widget.getCurrentUrl(), None) + self.assertEqual(self.widget.getCurrentUrlIndex(), None) + self.widget.setUrls(list(self.urls.values())) + + # wait for image to be loaded + self._waitUntilUrlLoaded() + + self.assertEqual(self.widget.getCurrentUrl(), self.urls[0]) + + # make sure all image are loaded + self.assertEqual(self.urlLoadedListener.callCount(), self._n_urls) + numpy.testing.assert_array_equal( + self.widget.getPlotWidget().getActiveImage(just_legend=False).getData(), + self._raw_data[0]) + self.assertEqual(self.widget._slider.value(), 0) + + self.widget._urlsTable.setUrl(self.urls[4]) + numpy.testing.assert_array_equal( + self.widget.getPlotWidget().getActiveImage(just_legend=False).getData(), + self._raw_data[4]) + self.assertEqual(self.widget._slider.value(), 4) + self.assertEqual(self.widget.getCurrentUrl(), self.urls[4]) + self.assertEqual(self.widget.getCurrentUrlIndex(), 4) + + self.widget._slider.setUrlIndex(6) + numpy.testing.assert_array_equal( + self.widget.getPlotWidget().getActiveImage(just_legend=False).getData(), + self._raw_data[6]) + self.assertEqual(self.widget._urlsTable.currentItem().text(), + self.urls[6].path()) + + def testCurrentUrlSignals(self): + """Test emission of 'currentUrlChangedListener'""" + # check initialization + self.assertEqual(self.currentUrlChangedListener.callCount(), 0) + self.widget.setUrls(list(self.urls.values())) + self.qapp.processEvents() + time.sleep(0.5) + self.qapp.processEvents() + # once loaded the two signals should have been sended + self.assertEqual(self.currentUrlChangedListener.callCount(), 1) + # if the slider is stuck to the same position no signal should be + # emitted + self.qapp.processEvents() + time.sleep(0.5) + self.qapp.processEvents() + self.assertEqual(self.widget._slider.value(), 0) + self.assertEqual(self.currentUrlChangedListener.callCount(), 1) + # if slider position is changed, one of each signal should have been + # emitted + self.widget._urlsTable.setUrl(self.urls[4]) + self.qapp.processEvents() + time.sleep(1.5) + self.qapp.processEvents() + self.assertEqual(self.currentUrlChangedListener.callCount(), 2) + + def testUtils(self): + """Test that some utils functions are working""" + self.widget.show() + self.widget.setUrls(list(self.urls.values())) + self.assertEqual(len(self.widget.getUrls()), len(self.urls)) + + # wait for image to be loaded + self._waitUntilUrlLoaded() + + urls_values = list(self.urls.values()) + self.assertEqual(urls_values[0], self.urls[0]) + self.assertEqual(urls_values[7], self.urls[7]) + + self.assertEqual(self.widget._getNextUrl(urls_values[2]).path(), + urls_values[3].path()) + self.assertEqual(self.widget._getPreviousUrl(urls_values[0]), None) + self.assertEqual(self.widget._getPreviousUrl(urls_values[6]).path(), + urls_values[5].path()) + + self.assertEqual(self.widget._getNNextUrls(2, urls_values[0]), + urls_values[1:3]) + self.assertEqual(self.widget._getNNextUrls(5, urls_values[7]), + urls_values[8:]) + self.assertEqual(self.widget._getNPreviousUrls(3, urls_values[2]), + urls_values[:2]) + self.assertEqual(self.widget._getNPreviousUrls(5, urls_values[8]), + urls_values[3:8]) + + def _waitUntilUrlLoaded(self, timeout=2.0): + """Wait until all image urls are loaded""" + loop_duration = 0.2 + remaining_duration = timeout + while(len(self.widget._loadingThreads) > 0 and remaining_duration > 0): + remaining_duration -= loop_duration + time.sleep(loop_duration) + self.qapp.processEvents() + + if remaining_duration <= 0.0: + remaining_urls = [] + for thread_ in self.widget._loadingThreads: + remaining_urls.append(thread_.url.path()) + mess = 'All images are not loaded after the time out. ' \ + 'Remaining urls are: ' + str(remaining_urls) + raise TimeoutError(mess) + return True + + +def suite(): + test_suite = unittest.TestSuite() + test_suite.addTest( + unittest.defaultTestLoader.loadTestsFromTestCase(TestImageStack)) + return test_suite + + +if __name__ == '__main__': + unittest.main(defaultTest='suite') |