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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2016 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.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)
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)
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()
def suite():
test_suite = unittest.TestSuite()
test_suite.addTest(
unittest.defaultTestLoader.loadTestsFromTestCase(TestArrayWidget))
test_suite.addTest(
unittest.defaultTestLoader.loadTestsFromTestCase(TestH5pyArrayWidget))
return test_suite
if __name__ == '__main__':
unittest.main(defaultTest='suite')
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