def testVMinVMax(self):
"""Test getter and setter associated to vmin and vmax values"""
vmin = 1.0
vmax = 2.0
colormapObject = Colormap(name='viridis',
vmin=vmin,
vmax=vmax,
normalization=Colormap.LINEAR)
with self.assertRaises(ValueError):
colormapObject.setVMin(3)
with self.assertRaises(ValueError):
colormapObject.setVMax(-2)
with self.assertRaises(ValueError):
colormapObject.setVRange(3, -2)
self.assertTrue(colormapObject.getColormapRange() == (1.0, 2.0))
self.assertTrue(colormapObject.isAutoscale() is False)
colormapObject.setVRange(None, None)
self.assertTrue(colormapObject.getVMin() is None)
self.assertTrue(colormapObject.getVMax() is None)
self.assertTrue(colormapObject.isAutoscale() is True)
def testVMinVMax(self):
"""Test getter and setter associated to vmin and vmax values"""
vmin = 1.0
vmax = 2.0
colormapObject = Colormap(name='viridis',
vmin=vmin,
vmax=vmax,
normalization=Colormap.LINEAR)
with self.assertRaises(ValueError):
colormapObject.setVMin(3)
with self.assertRaises(ValueError):
colormapObject.setVMax(-2)
with self.assertRaises(ValueError):
colormapObject.setVRange(3, -2)
self.assertTrue(colormapObject.getColormapRange() == (1.0, 2.0))
self.assertTrue(colormapObject.isAutoscale() is False)
colormapObject.setVRange(None, None)
self.assertTrue(colormapObject.getVMin() is None)
self.assertTrue(colormapObject.getVMax() is None)
self.assertTrue(colormapObject.isAutoscale() is True)
class TestColormapDialog(TestCaseQt, ParametricTestCase):
"""Test the ColormapDialog."""
def setUp(self):
TestCaseQt.setUp(self)
ParametricTestCase.setUp(self)
self.colormap = Colormap(name='gray', vmin=10.0, vmax=20.0,
normalization='linear')
self.colormapDiag = ColormapDialog.ColormapDialog()
self.colormapDiag.setAttribute(qt.Qt.WA_DeleteOnClose)
def tearDown(self):
del self.colormapDiag
ParametricTestCase.tearDown(self)
TestCaseQt.tearDown(self)
def testGUIEdition(self):
"""Make sure the colormap is correctly edited and also that the
modification are correctly updated if an other colormapdialog is
editing the same colormap"""
colormapDiag2 = ColormapDialog.ColormapDialog()
colormapDiag2.setColormap(self.colormap)
colormapDiag2.show()
self.colormapDiag.setColormap(self.colormap)
self.colormapDiag.show()
self.colormapDiag._comboBoxColormap._setCurrentName('red')
self.colormapDiag._normButtonLog.click()
self.assertTrue(self.colormap.getName() == 'red')
self.assertTrue(self.colormapDiag.getColormap().getName() == 'red')
self.assertTrue(self.colormap.getNormalization() == 'log')
self.assertTrue(self.colormap.getVMin() == 10)
self.assertTrue(self.colormap.getVMax() == 20)
# checked second colormap dialog
self.assertTrue(colormapDiag2._comboBoxColormap.getCurrentName() == 'red')
self.assertTrue(colormapDiag2._normButtonLog.isChecked())
self.assertTrue(int(colormapDiag2._minValue.getValue()) == 10)
self.assertTrue(int(colormapDiag2._maxValue.getValue()) == 20)
colormapDiag2.close()
def testGUIModalOk(self):
"""Make sure the colormap is modified if gone through accept"""
assert self.colormap.isAutoscale() is False
self.colormapDiag.setModal(True)
self.colormapDiag.show()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.colormapDiag._maxValue.setValue(None)
self.mouseClick(
widget=self.colormapDiag._buttonsModal.button(qt.QDialogButtonBox.Ok),
button=qt.Qt.LeftButton
)
self.assertTrue(self.colormap.getVMin() is None)
self.assertTrue(self.colormap.getVMax() is None)
self.assertTrue(self.colormap.isAutoscale() is True)
def testGUIModalCancel(self):
"""Make sure the colormap is not modified if gone through reject"""
assert self.colormap.isAutoscale() is False
self.colormapDiag.setModal(True)
self.colormapDiag.show()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.mouseClick(
widget=self.colormapDiag._buttonsModal.button(qt.QDialogButtonBox.Cancel),
button=qt.Qt.LeftButton
)
self.assertTrue(self.colormap.getVMin() is not None)
def testGUIModalClose(self):
assert self.colormap.isAutoscale() is False
self.colormapDiag.setModal(False)
self.colormapDiag.show()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.mouseClick(
widget=self.colormapDiag._buttonsNonModal.button(qt.QDialogButtonBox.Close),
button=qt.Qt.LeftButton
)
self.assertTrue(self.colormap.getVMin() is None)
def testGUIModalReset(self):
assert self.colormap.isAutoscale() is False
self.colormapDiag.setModal(False)
self.colormapDiag.show()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.mouseClick(
widget=self.colormapDiag._buttonsNonModal.button(qt.QDialogButtonBox.Reset),
button=qt.Qt.LeftButton
)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag.close()
def testGUIClose(self):
"""Make sure the colormap is modify if go through reject"""
assert self.colormap.isAutoscale() is False
self.colormapDiag.show()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.colormapDiag.close()
self.assertTrue(self.colormap.getVMin() is None)
def testSetColormapIsCorrect(self):
"""Make sure the interface fir the colormap when set a new colormap"""
self.colormap.setName('red')
self.colormapDiag.show()
for norm in (Colormap.NORMALIZATIONS):
for autoscale in (True, False):
if autoscale is True:
self.colormap.setVRange(None, None)
else:
self.colormap.setVRange(11, 101)
self.colormap.setNormalization(norm)
with self.subTest(colormap=self.colormap):
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(
self.colormapDiag._normButtonLinear.isChecked() == (norm is Colormap.LINEAR))
self.assertTrue(
self.colormapDiag._comboBoxColormap.getCurrentName() == 'red')
self.assertTrue(
self.colormapDiag._minValue.isAutoChecked() == autoscale)
self.assertTrue(
self.colormapDiag._maxValue.isAutoChecked() == autoscale)
if autoscale is False:
self.assertTrue(self.colormapDiag._minValue.getValue() == 11)
self.assertTrue(self.colormapDiag._maxValue.getValue() == 101)
self.assertTrue(self.colormapDiag._minValue.isEnabled())
self.assertTrue(self.colormapDiag._maxValue.isEnabled())
else:
self.assertFalse(self.colormapDiag._minValue._numVal.isEnabled())
self.assertFalse(self.colormapDiag._maxValue._numVal.isEnabled())
def testColormapDel(self):
"""Check behavior if the colormap has been deleted outside. For now
we make sure the colormap is still running and nothing more"""
self.colormapDiag.setColormap(self.colormap)
self.colormapDiag.show()
del self.colormap
self.assertTrue(self.colormapDiag.getColormap() is None)
self.colormapDiag._comboBoxColormap._setCurrentName('blue')
def testColormapEditedOutside(self):
"""Make sure the GUI is still up to date if the colormap is modified
outside"""
self.colormapDiag.setColormap(self.colormap)
self.colormapDiag.show()
self.colormap.setName('red')
self.assertTrue(
self.colormapDiag._comboBoxColormap.getCurrentName() == 'red')
self.colormap.setNormalization(Colormap.LOGARITHM)
self.assertFalse(self.colormapDiag._normButtonLinear.isChecked())
self.colormap.setVRange(11, 201)
self.assertTrue(self.colormapDiag._minValue.getValue() == 11)
self.assertTrue(self.colormapDiag._maxValue.getValue() == 201)
self.assertTrue(self.colormapDiag._minValue._numVal.isEnabled())
self.assertTrue(self.colormapDiag._maxValue._numVal.isEnabled())
self.assertFalse(self.colormapDiag._minValue.isAutoChecked())
self.assertFalse(self.colormapDiag._maxValue.isAutoChecked())
self.colormap.setVRange(None, None)
self.assertFalse(self.colormapDiag._minValue._numVal.isEnabled())
self.assertFalse(self.colormapDiag._maxValue._numVal.isEnabled())
self.assertTrue(self.colormapDiag._minValue.isAutoChecked())
self.assertTrue(self.colormapDiag._maxValue.isAutoChecked())
def testSetColormapScenario(self):
"""Test of a simple scenario of a colormap dialog editing several
colormap"""
colormap1 = Colormap(name='gray', vmin=10.0, vmax=20.0,
normalization='linear')
colormap2 = Colormap(name='red', vmin=10.0, vmax=20.0,
normalization='log')
colormap3 = Colormap(name='blue', vmin=None, vmax=None,
normalization='linear')
self.colormapDiag.setColormap(self.colormap)
self.colormapDiag.setColormap(colormap1)
del colormap1
self.colormapDiag.setColormap(colormap2)
del colormap2
self.colormapDiag.setColormap(colormap3)
del colormap3
def testNotPreferredColormap(self):
"""Test that the colormapEditor is able to edit a colormap which is not
part of the 'prefered colormap'
"""
def getFirstNotPreferredColormap():
cms = Colormap.getSupportedColormaps()
preferred = preferredColormaps()
for cm in cms:
if cm not in preferred:
return cm
return None
colormapName = getFirstNotPreferredColormap()
assert colormapName is not None
colormap = Colormap(name=colormapName)
self.colormapDiag.setColormap(colormap)
self.colormapDiag.show()
cb = self.colormapDiag._comboBoxColormap
self.assertTrue(cb.getCurrentName() == colormapName)
cb.setCurrentIndex(0)
index = cb.findLutName(colormapName)
assert index is not 0 # if 0 then the rest of the test has no sense
cb.setCurrentIndex(index)
self.assertTrue(cb.getCurrentName() == colormapName)
def testColormapEditableMode(self):
"""Test that the colormapDialog is correctly updated when changing the
colormap editable status"""
colormap = Colormap(normalization='linear', vmin=1.0, vmax=10.0)
self.colormapDiag.show()
self.colormapDiag.setColormap(colormap)
for editable in (True, False):
with self.subTest(editable=editable):
colormap.setEditable(editable)
self.assertTrue(
self.colormapDiag._comboBoxColormap.isEnabled() is editable)
self.assertTrue(
self.colormapDiag._minValue.isEnabled() is editable)
self.assertTrue(
self.colormapDiag._maxValue.isEnabled() is editable)
self.assertTrue(
self.colormapDiag._normButtonLinear.isEnabled() is editable)
self.assertTrue(
self.colormapDiag._normButtonLog.isEnabled() is editable)
# Make sure the reset button is also set to enable when edition mode is
# False
self.colormapDiag.setModal(False)
colormap.setEditable(True)
self.colormapDiag._normButtonLog.click()
resetButton = self.colormapDiag._buttonsNonModal.button(qt.QDialogButtonBox.Reset)
self.assertTrue(resetButton.isEnabled())
colormap.setEditable(False)
self.assertFalse(resetButton.isEnabled())
def testImageData(self):
data = numpy.random.rand(5, 5)
self.colormapDiag.setData(data)
def testEmptyData(self):
data = numpy.empty((10, 0))
self.colormapDiag.setData(data)
def testNoneData(self):
data = numpy.random.rand(5, 5)
self.colormapDiag.setData(data)
self.colormapDiag.setData(None)
class TestColormapDialog(TestCaseQt, ParametricTestCase):
"""Test the ColormapDialog."""
def setUp(self):
TestCaseQt.setUp(self)
ParametricTestCase.setUp(self)
self.colormap = Colormap(name='gray',
vmin=10.0,
vmax=20.0,
normalization='linear')
self.colormapDiag = ColormapDialog.ColormapDialog()
def tearDown(self):
self.qapp.processEvents()
self.colormapDiag.close()
self.colormapDiag.deleteLater()
self.qapp.processEvents()
del self.colormapDiag
ParametricTestCase.tearDown(self)
TestCaseQt.tearDown(self)
def testGUIEdition(self):
"""Make sure the colormap is correctly edited and also that the
modification are correctly updated if an other colormapdialog is
editing the same colormap"""
colormapDiag2 = ColormapDialog.ColormapDialog()
colormapDiag2.setColormap(self.colormap)
colormapDiag2.show()
self.colormapDiag.setColormap(self.colormap)
self.colormapDiag.show()
self.qapp.processEvents()
self.colormapDiag._comboBoxColormap._setCurrentName('red')
self.colormapDiag._normButtonLog.click()
self.assertTrue(self.colormap.getName() == 'red')
self.assertTrue(self.colormapDiag.getColormap().getName() == 'red')
self.assertTrue(self.colormap.getNormalization() == 'log')
self.assertTrue(self.colormap.getVMin() == 10)
self.assertTrue(self.colormap.getVMax() == 20)
# checked second colormap dialog
self.assertTrue(
colormapDiag2._comboBoxColormap.getCurrentName() == 'red')
self.assertTrue(colormapDiag2._normButtonLog.isChecked())
self.assertTrue(int(colormapDiag2._minValue.getValue()) == 10)
self.assertTrue(int(colormapDiag2._maxValue.getValue()) == 20)
colormapDiag2.close()
def testGUIModalOk(self):
"""Make sure the colormap is modified if gone through accept"""
assert self.colormap.isAutoscale() is False
self.colormapDiag.setModal(True)
self.colormapDiag.show()
self.qapp.processEvents()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.colormapDiag._maxValue.setValue(None)
self.mouseClick(widget=self.colormapDiag._buttonsModal.button(
qt.QDialogButtonBox.Ok),
button=qt.Qt.LeftButton)
self.assertTrue(self.colormap.getVMin() is None)
self.assertTrue(self.colormap.getVMax() is None)
self.assertTrue(self.colormap.isAutoscale() is True)
def testGUIModalCancel(self):
"""Make sure the colormap is not modified if gone through reject"""
assert self.colormap.isAutoscale() is False
self.colormapDiag.setModal(True)
self.colormapDiag.show()
self.qapp.processEvents()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.mouseClick(widget=self.colormapDiag._buttonsModal.button(
qt.QDialogButtonBox.Cancel),
button=qt.Qt.LeftButton)
self.assertTrue(self.colormap.getVMin() is not None)
def testGUIModalClose(self):
assert self.colormap.isAutoscale() is False
self.colormapDiag.setModal(False)
self.colormapDiag.show()
self.qapp.processEvents()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.mouseClick(widget=self.colormapDiag._buttonsNonModal.button(
qt.QDialogButtonBox.Close),
button=qt.Qt.LeftButton)
self.assertTrue(self.colormap.getVMin() is None)
def testGUIModalReset(self):
assert self.colormap.isAutoscale() is False
self.colormapDiag.setModal(False)
self.colormapDiag.show()
self.qapp.processEvents()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.mouseClick(widget=self.colormapDiag._buttonsNonModal.button(
qt.QDialogButtonBox.Reset),
button=qt.Qt.LeftButton)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag.close()
def testGUIClose(self):
"""Make sure the colormap is modify if go through reject"""
assert self.colormap.isAutoscale() is False
self.colormapDiag.show()
self.qapp.processEvents()
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(self.colormap.getVMin() is not None)
self.colormapDiag._minValue.setValue(None)
self.assertTrue(self.colormap.getVMin() is None)
self.colormapDiag.close()
self.qapp.processEvents()
self.assertTrue(self.colormap.getVMin() is None)
def testSetColormapIsCorrect(self):
"""Make sure the interface fir the colormap when set a new colormap"""
self.colormap.setName('red')
self.colormapDiag.show()
self.qapp.processEvents()
for norm in (Colormap.NORMALIZATIONS):
for autoscale in (True, False):
if autoscale is True:
self.colormap.setVRange(None, None)
else:
self.colormap.setVRange(11, 101)
self.colormap.setNormalization(norm)
with self.subTest(colormap=self.colormap):
self.colormapDiag.setColormap(self.colormap)
self.assertTrue(
self.colormapDiag._normButtonLinear.isChecked() == (
norm is Colormap.LINEAR))
self.assertTrue(self.colormapDiag._comboBoxColormap.
getCurrentName() == 'red')
self.assertTrue(self.colormapDiag._minValue.isAutoChecked(
) == autoscale)
self.assertTrue(self.colormapDiag._maxValue.isAutoChecked(
) == autoscale)
if autoscale is False:
self.assertTrue(
self.colormapDiag._minValue.getValue() == 11)
self.assertTrue(
self.colormapDiag._maxValue.getValue() == 101)
self.assertTrue(
self.colormapDiag._minValue.isEnabled())
self.assertTrue(
self.colormapDiag._maxValue.isEnabled())
else:
self.assertFalse(
self.colormapDiag._minValue._numVal.isEnabled())
self.assertFalse(
self.colormapDiag._maxValue._numVal.isEnabled())
def testColormapDel(self):
"""Check behavior if the colormap has been deleted outside. For now
we make sure the colormap is still running and nothing more"""
self.colormapDiag.setColormap(self.colormap)
self.colormapDiag.show()
self.qapp.processEvents()
del self.colormap
self.assertTrue(self.colormapDiag.getColormap() is None)
self.colormapDiag._comboBoxColormap._setCurrentName('blue')
def testColormapEditedOutside(self):
"""Make sure the GUI is still up to date if the colormap is modified
outside"""
self.colormapDiag.setColormap(self.colormap)
self.colormapDiag.show()
self.qapp.processEvents()
self.colormap.setName('red')
self.assertTrue(
self.colormapDiag._comboBoxColormap.getCurrentName() == 'red')
self.colormap.setNormalization(Colormap.LOGARITHM)
self.assertFalse(self.colormapDiag._normButtonLinear.isChecked())
self.colormap.setVRange(11, 201)
self.assertTrue(self.colormapDiag._minValue.getValue() == 11)
self.assertTrue(self.colormapDiag._maxValue.getValue() == 201)
self.assertTrue(self.colormapDiag._minValue._numVal.isEnabled())
self.assertTrue(self.colormapDiag._maxValue._numVal.isEnabled())
self.assertFalse(self.colormapDiag._minValue.isAutoChecked())
self.assertFalse(self.colormapDiag._maxValue.isAutoChecked())
self.colormap.setVRange(None, None)
self.assertFalse(self.colormapDiag._minValue._numVal.isEnabled())
self.assertFalse(self.colormapDiag._maxValue._numVal.isEnabled())
self.assertTrue(self.colormapDiag._minValue.isAutoChecked())
self.assertTrue(self.colormapDiag._maxValue.isAutoChecked())
def testSetColormapScenario(self):
"""Test of a simple scenario of a colormap dialog editing several
colormap"""
colormap1 = Colormap(name='gray',
vmin=10.0,
vmax=20.0,
normalization='linear')
colormap2 = Colormap(name='red',
vmin=10.0,
vmax=20.0,
normalization='log')
colormap3 = Colormap(name='blue',
vmin=None,
vmax=None,
normalization='linear')
self.colormapDiag.setColormap(self.colormap)
self.colormapDiag.setColormap(colormap1)
del colormap1
self.colormapDiag.setColormap(colormap2)
del colormap2
self.colormapDiag.setColormap(colormap3)
del colormap3
def testNotPreferredColormap(self):
"""Test that the colormapEditor is able to edit a colormap which is not
part of the 'prefered colormap'
"""
def getFirstNotPreferredColormap():
cms = Colormap.getSupportedColormaps()
preferred = preferredColormaps()
for cm in cms:
if cm not in preferred:
return cm
return None
colormapName = getFirstNotPreferredColormap()
assert colormapName is not None
colormap = Colormap(name=colormapName)
self.colormapDiag.setColormap(colormap)
self.colormapDiag.show()
self.qapp.processEvents()
cb = self.colormapDiag._comboBoxColormap
self.assertTrue(cb.getCurrentName() == colormapName)
cb.setCurrentIndex(0)
index = cb.findLutName(colormapName)
assert index is not 0 # if 0 then the rest of the test has no sense
cb.setCurrentIndex(index)
self.assertTrue(cb.getCurrentName() == colormapName)
def testColormapEditableMode(self):
"""Test that the colormapDialog is correctly updated when changing the
colormap editable status"""
colormap = Colormap(normalization='linear', vmin=1.0, vmax=10.0)
self.colormapDiag.show()
self.qapp.processEvents()
self.colormapDiag.setColormap(colormap)
for editable in (True, False):
with self.subTest(editable=editable):
colormap.setEditable(editable)
self.assertTrue(
self.colormapDiag._comboBoxColormap.isEnabled() is editable
)
self.assertTrue(
self.colormapDiag._minValue.isEnabled() is editable)
self.assertTrue(
self.colormapDiag._maxValue.isEnabled() is editable)
self.assertTrue(
self.colormapDiag._normButtonLinear.isEnabled() is editable
)
self.assertTrue(
self.colormapDiag._normButtonLog.isEnabled() is editable)
# Make sure the reset button is also set to enable when edition mode is
# False
self.colormapDiag.setModal(False)
colormap.setEditable(True)
self.colormapDiag._normButtonLog.click()
resetButton = self.colormapDiag._buttonsNonModal.button(
qt.QDialogButtonBox.Reset)
self.assertTrue(resetButton.isEnabled())
colormap.setEditable(False)
self.assertFalse(resetButton.isEnabled())
def testImageData(self):
data = numpy.random.rand(5, 5)
self.colormapDiag.setData(data)
def testEmptyData(self):
data = numpy.empty((10, 0))
self.colormapDiag.setData(data)
def testNoneData(self):
data = numpy.random.rand(5, 5)
self.colormapDiag.setData(data)
self.colormapDiag.setData(None)
def testImageItem(self):
"""Check that an ImageData plot item can be used"""
dialog = self.colormapDiag
colormap = Colormap(name='gray', vmin=None, vmax=None)
data = numpy.arange(3**2).reshape(3, 3)
item = ImageData()
item.setData(data, copy=False)
dialog.setColormap(colormap)
dialog.show()
self.qapp.processEvents()
dialog.setItem(item)
vrange = dialog._getFiniteColormapRange()
self.assertEqual(vrange, (0, 8))
def testItemDel(self):
"""Check that the plot items are not hard linked to the dialog"""
dialog = self.colormapDiag
colormap = Colormap(name='gray', vmin=None, vmax=None)
data = numpy.arange(3**2).reshape(3, 3)
item = ImageData()
item.setData(data, copy=False)
dialog.setColormap(colormap)
dialog.show()
self.qapp.processEvents()
dialog.setItem(item)
previousRange = dialog._getFiniteColormapRange()
del item
vrange = dialog._getFiniteColormapRange()
self.assertNotEqual(vrange, previousRange)
def testDataDel(self):
"""Check that the data are not hard linked to the dialog"""
dialog = self.colormapDiag
colormap = Colormap(name='gray', vmin=None, vmax=None)
data = numpy.arange(5)
dialog.setColormap(colormap)
dialog.show()
self.qapp.processEvents()
dialog.setData(data)
previousRange = dialog._getFiniteColormapRange()
del data
vrange = dialog._getFiniteColormapRange()
self.assertNotEqual(vrange, previousRange)