# 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')