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Diffstat (limited to 'src/silx/gui/data/test/test_arraywidget.py')
| -rw-r--r-- | src/silx/gui/data/test/test_arraywidget.py | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/src/silx/gui/data/test/test_arraywidget.py b/src/silx/gui/data/test/test_arraywidget.py new file mode 100644 index 0000000..c84a34f --- /dev/null +++ b/src/silx/gui/data/test/test_arraywidget.py @@ -0,0 +1,316 @@ +# coding: utf-8 +# /*########################################################################## +# +# Copyright (c) 2016-2021 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. +# +# ###########################################################################*/ +__authors__ = ["P. Knobel"] +__license__ = "MIT" +__date__ = "05/12/2016" + +import os +import tempfile +import unittest + +import numpy + +from silx.gui import qt +from silx.gui.data import ArrayTableWidget +from silx.gui.data.ArrayTableModel import ArrayTableModel +from silx.gui.utils.testutils import TestCaseQt + +import h5py + + +class TestArrayWidget(TestCaseQt): + """Basic test for ArrayTableWidget with a numpy array""" + def setUp(self): + super(TestArrayWidget, self).setUp() + self.aw = ArrayTableWidget.ArrayTableWidget() + + def tearDown(self): + del self.aw + super(TestArrayWidget, self).tearDown() + + def testShow(self): + """test for errors""" + self.aw.show() + self.qWaitForWindowExposed(self.aw) + + def testSetData0D(self): + a = 1 + self.aw.setArrayData(a) + b = self.aw.getData(copy=True) + + self.assertTrue(numpy.array_equal(a, b)) + + # scalar/0D data has no frame index + self.assertEqual(len(self.aw.model._index), 0) + # and no perspective + self.assertEqual(len(self.aw.model._perspective), 0) + + def testSetData1D(self): + a = [1, 2] + self.aw.setArrayData(a) + b = self.aw.getData(copy=True) + + self.assertTrue(numpy.array_equal(a, b)) + + # 1D data has no frame index + self.assertEqual(len(self.aw.model._index), 0) + # and no perspective + self.assertEqual(len(self.aw.model._perspective), 0) + + def testSetData4D(self): + a = numpy.reshape(numpy.linspace(0.213, 1.234, 1250), + (5, 5, 5, 10)) + self.aw.setArrayData(a) + + # default perspective (0, 1) + self.assertEqual(list(self.aw.model._perspective), + [0, 1]) + self.aw.setPerspective((1, 3)) + self.assertEqual(list(self.aw.model._perspective), + [1, 3]) + + b = self.aw.getData(copy=True) + self.assertTrue(numpy.array_equal(a, b)) + + # 4D data has a 2-tuple as frame index + self.assertEqual(len(self.aw.model._index), 2) + # default index is (0, 0) + self.assertEqual(list(self.aw.model._index), + [0, 0]) + self.aw.setFrameIndex((3, 1)) + + self.assertEqual(list(self.aw.model._index), + [3, 1]) + + def testColors(self): + a = numpy.arange(256, dtype=numpy.uint8) + self.aw.setArrayData(a) + + bgcolor = numpy.empty(a.shape + (3,), dtype=numpy.uint8) + # Black & white palette + bgcolor[..., 0] = a + bgcolor[..., 1] = a + bgcolor[..., 2] = a + + fgcolor = numpy.bitwise_xor(bgcolor, 255) + + self.aw.setArrayColors(bgcolor, fgcolor) + + # test colors are as expected in model + for i in range(256): + # all RGB channels for BG equal to data value + self.assertEqual( + self.aw.model.data(self.aw.model.index(0, i), + role=qt.Qt.BackgroundRole), + qt.QColor(i, i, i), + "Unexpected background color" + ) + + # all RGB channels for FG equal to XOR(data value, 255) + self.assertEqual( + self.aw.model.data(self.aw.model.index(0, i), + role=qt.Qt.ForegroundRole), + qt.QColor(i ^ 255, i ^ 255, i ^ 255), + "Unexpected text color" + ) + + # test colors are reset to None when a new data array is loaded + # with different shape + self.aw.setArrayData(numpy.arange(300)) + + for i in range(300): + # all RGB channels for BG equal to data value + self.assertIsNone( + self.aw.model.data(self.aw.model.index(0, i), + role=qt.Qt.BackgroundRole)) + + def testDefaultFlagNotEditable(self): + """editable should be False by default, in setArrayData""" + self.aw.setArrayData([[0]]) + idx = self.aw.model.createIndex(0, 0) + # model is editable + self.assertFalse( + self.aw.model.flags(idx) & qt.Qt.ItemIsEditable) + + def testFlagEditable(self): + self.aw.setArrayData([[0]], editable=True) + idx = self.aw.model.createIndex(0, 0) + # model is editable + self.assertTrue( + self.aw.model.flags(idx) & qt.Qt.ItemIsEditable) + + def testFlagNotEditable(self): + self.aw.setArrayData([[0]], editable=False) + idx = self.aw.model.createIndex(0, 0) + # model is editable + self.assertFalse( + self.aw.model.flags(idx) & qt.Qt.ItemIsEditable) + + def testReferenceReturned(self): + """when setting the data with copy=False and + retrieving it with getData(copy=False), we should recover + the same original object. + """ + # n-D (n >=2) + a0 = numpy.reshape(numpy.linspace(0.213, 1.234, 1000), + (10, 10, 10)) + self.aw.setArrayData(a0, copy=False) + a1 = self.aw.getData(copy=False) + + self.assertIs(a0, a1) + + # 1D + b0 = numpy.linspace(0.213, 1.234, 1000) + self.aw.setArrayData(b0, copy=False) + b1 = self.aw.getData(copy=False) + self.assertIs(b0, b1) + + def testClipping(self): + """Test clipping of large arrays""" + self.aw.show() + self.qWaitForWindowExposed(self.aw) + + data = numpy.arange(ArrayTableModel.MAX_NUMBER_OF_SECTIONS + 10) + + for shape in [(1, -1), (-1, 1)]: + with self.subTest(shape=shape): + self.aw.setArrayData(data.reshape(shape), editable=True) + self.qapp.processEvents() + + +class TestH5pyArrayWidget(TestCaseQt): + """Basic test for ArrayTableWidget with a dataset. + + Test flags, for dataset open in read-only or read-write modes""" + def setUp(self): + super(TestH5pyArrayWidget, self).setUp() + self.aw = ArrayTableWidget.ArrayTableWidget() + self.data = numpy.reshape(numpy.linspace(0.213, 1.234, 1000), + (10, 10, 10)) + # create an h5py file with a dataset + self.tempdir = tempfile.mkdtemp() + self.h5_fname = os.path.join(self.tempdir, "array.h5") + h5f = h5py.File(self.h5_fname, mode='w') + h5f["my_array"] = self.data + h5f["my_scalar"] = 3.14 + h5f["my_1D_array"] = numpy.array(numpy.arange(1000)) + h5f.close() + + def tearDown(self): + del self.aw + os.unlink(self.h5_fname) + os.rmdir(self.tempdir) + super(TestH5pyArrayWidget, self).tearDown() + + def testShow(self): + self.aw.show() + self.qWaitForWindowExposed(self.aw) + + def testReadOnly(self): + """Open H5 dataset in read-only mode, ensure the model is not editable.""" + h5f = h5py.File(self.h5_fname, "r") + a = h5f["my_array"] + # ArrayTableModel relies on following condition + self.assertTrue(a.file.mode == "r") + + self.aw.setArrayData(a, copy=False, editable=True) + + self.assertIsInstance(a, h5py.Dataset) # simple sanity check + # internal representation must be a reference to original data (copy=False) + self.assertIsInstance(self.aw.model._array, h5py.Dataset) + self.assertTrue(self.aw.model._array.file.mode == "r") + + b = self.aw.getData() + self.assertTrue(numpy.array_equal(self.data, b)) + + # model must have detected read-only dataset and disabled editing + self.assertFalse(self.aw.model._editable) + idx = self.aw.model.createIndex(0, 0) + self.assertFalse( + self.aw.model.flags(idx) & qt.Qt.ItemIsEditable) + + # force editing read-only datasets raises IOError + self.assertRaises(IOError, self.aw.model.setData, + idx, 123.4, role=qt.Qt.EditRole) + h5f.close() + + def testReadWrite(self): + h5f = h5py.File(self.h5_fname, "r+") + a = h5f["my_array"] + self.assertTrue(a.file.mode == "r+") + + self.aw.setArrayData(a, copy=False, editable=True) + b = self.aw.getData(copy=False) + self.assertTrue(numpy.array_equal(self.data, b)) + + idx = self.aw.model.createIndex(0, 0) + # model is editable + self.assertTrue( + self.aw.model.flags(idx) & qt.Qt.ItemIsEditable) + h5f.close() + + def testSetData0D(self): + h5f = h5py.File(self.h5_fname, "r+") + a = h5f["my_scalar"] + self.aw.setArrayData(a) + b = self.aw.getData(copy=True) + + self.assertTrue(numpy.array_equal(a, b)) + + h5f.close() + + def testSetData1D(self): + h5f = h5py.File(self.h5_fname, "r+") + a = h5f["my_1D_array"] + self.aw.setArrayData(a) + b = self.aw.getData(copy=True) + + self.assertTrue(numpy.array_equal(a, b)) + + h5f.close() + + def testReferenceReturned(self): + """when setting the data with copy=False and + retrieving it with getData(copy=False), we should recover + the same original object. + + This only works for array with at least 2D. For 1D and 0D + arrays, a view is created at some point, which in the case + of an hdf5 dataset creates a copy.""" + h5f = h5py.File(self.h5_fname, "r+") + + # n-D + a0 = h5f["my_array"] + self.aw.setArrayData(a0, copy=False) + a1 = self.aw.getData(copy=False) + self.assertIs(a0, a1) + + # 1D + b0 = h5f["my_1D_array"] + self.aw.setArrayData(b0, copy=False) + b1 = self.aw.getData(copy=False) + self.assertIs(b0, b1) + + h5f.close() |