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# (C) Copyright 2004-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
import contextlib
import datetime
import unittest
from traits.api import HasTraits, Datetime
from traitsui.api import DatetimeEditor, Item, View
from traitsui.tests._tools import (
BaseTestMixin,
create_ui,
GuiTestAssistant,
process_cascade_events,
requires_toolkit,
reraise_exceptions,
ToolkitName,
no_gui_test_assistant,
)
class InstanceWithDatetime(HasTraits):
"""Demo class to show Datetime editors."""
date_time = Datetime(allow_none=True)
def to_datetime(q_datetime):
try:
return q_datetime.toPyDateTime()
except AttributeError:
return q_datetime.toPython()
def get_date_time_simple_view(editor_factory):
view = View(
Item(
name="date_time",
style="simple",
editor=editor_factory,
)
)
return view
@requires_toolkit([ToolkitName.qt])
@unittest.skipIf(no_gui_test_assistant, "No GuiTestAssistant")
class TestDatetimeEditorQt(BaseTestMixin, GuiTestAssistant, unittest.TestCase):
"""Tests for DatetimeEditor using Qt."""
def setUp(self):
BaseTestMixin.setUp(self)
GuiTestAssistant.setUp(self)
def tearDown(self):
GuiTestAssistant.tearDown(self)
BaseTestMixin.tearDown(self)
def test_datetime_editor_simple(self):
view = get_date_time_simple_view(DatetimeEditor())
date_time = datetime.datetime(2000, 1, 2, 1, 2, 3)
instance = InstanceWithDatetime(date_time=date_time)
with reraise_exceptions(), self.launch_editor(instance, view):
pass
def test_datetime_editor_simple_with_minimum_datetime(self):
# Test the editor uses the minimum datetime as expected
minimum_datetime = datetime.datetime(2000, 1, 1)
editor_factory = DatetimeEditor(
minimum_datetime=minimum_datetime,
)
view = get_date_time_simple_view(editor_factory)
instance = InstanceWithDatetime()
with reraise_exceptions(), self.launch_editor(
instance, view
) as editor:
q_minimum_datetime = editor.control.minimumDateTime()
actual_minimum_datetime = to_datetime(q_minimum_datetime)
self.assertEqual(actual_minimum_datetime, minimum_datetime)
def test_datetime_editor_simple_with_minimum_datetime_out_of_bound(self):
# Test when out-of-bound value is given, it is reset to the bounded
# value.
minimum_datetime = datetime.datetime(2000, 1, 1)
editor_factory = DatetimeEditor(
minimum_datetime=minimum_datetime,
)
view = get_date_time_simple_view(editor_factory)
instance = InstanceWithDatetime()
with reraise_exceptions(), self.launch_editor(
instance, view
) as editor:
instance.date_time = datetime.datetime(1980, 1, 1)
# does not seem needed to flush the event loop, but just in case.
process_cascade_events()
displayed_value = to_datetime(editor.control.dateTime())
self.assertEqual(displayed_value, minimum_datetime)
self.assertEqual(instance.date_time, minimum_datetime)
def test_datetime_editor_mutate_minimum_datetime_after_init(self):
# Test if the minimum_datetime on the editor is mutated after init,
# the values on the edited object and the view are synchronized.
editor_factory = DatetimeEditor(
minimum_datetime=datetime.datetime(2000, 1, 1),
)
view = get_date_time_simple_view(editor_factory)
instance = InstanceWithDatetime()
with reraise_exceptions(), self.launch_editor(
instance, view
) as editor:
# This value is in-range
instance.date_time = datetime.datetime(2001, 1, 1)
# Now change the editor's minimum datetime such that the original
# value is out-of-range
new_minimum_datetime = datetime.datetime(2010, 1, 1)
editor.minimum_datetime = new_minimum_datetime
# does not seem needed to flush the event loop, but just in case.
process_cascade_events()
displayed_value = to_datetime(editor.control.dateTime())
self.assertEqual(instance.date_time, displayed_value)
self.assertEqual(displayed_value, new_minimum_datetime)
def test_datetime_editor_mutate_minimum_datetime_bad_order(self):
# Test if the minimum_datetime on the editor is mutated after init,
# the values on the edited object and the view are synchronized.
editor_factory = DatetimeEditor(
minimum_datetime=datetime.datetime(2000, 1, 1),
maximum_datetime=datetime.datetime(2010, 1, 1),
)
view = get_date_time_simple_view(editor_factory)
instance = InstanceWithDatetime()
with reraise_exceptions(), self.launch_editor(
instance, view
) as editor:
# This value is in-range
instance.date_time = datetime.datetime(2001, 1, 1)
# Now change the editor's minimum datetime such that the original
# value is out-of-range and the minimum is greater than maximum
new_minimum_datetime = datetime.datetime(2020, 1, 1)
editor.minimum_datetime = new_minimum_datetime
# does not seem needed to flush the event loop, but just in case.
process_cascade_events()
displayed_value = to_datetime(editor.control.dateTime())
self.assertEqual(instance.date_time, displayed_value)
self.assertEqual(displayed_value, new_minimum_datetime)
self.assertEqual(editor.maximum_datetime, new_minimum_datetime)
def test_datetime_editor_simple_with_maximum_datetime(self):
# Test the editor uses the maximum datetime as expected
maximum_datetime = datetime.datetime(2000, 1, 1)
editor_factory = DatetimeEditor(
maximum_datetime=maximum_datetime,
)
view = get_date_time_simple_view(editor_factory)
instance = InstanceWithDatetime()
with reraise_exceptions(), self.launch_editor(
instance, view
) as editor:
q_maximum_datetime = editor.control.maximumDateTime()
# does not seem needed to flush the event loop, but just in case.
process_cascade_events()
actual_maximum_datetime = to_datetime(q_maximum_datetime)
self.assertEqual(actual_maximum_datetime, maximum_datetime)
def test_datetime_editor_simple_with_maximum_datetime_out_of_bound(self):
maximum_datetime = datetime.datetime(2000, 1, 1)
editor_factory = DatetimeEditor(
maximum_datetime=maximum_datetime,
)
view = get_date_time_simple_view(editor_factory)
instance = InstanceWithDatetime()
with reraise_exceptions(), self.launch_editor(
instance, view
) as editor:
# out-of-bound
instance.date_time = datetime.datetime(2020, 1, 1)
# does not seem needed to flush the event loop, but just in case.
process_cascade_events()
displayed_value = to_datetime(editor.control.dateTime())
self.assertEqual(displayed_value, maximum_datetime)
self.assertEqual(instance.date_time, maximum_datetime)
def test_datetime_editor_mutate_maximum_datetime_after_init(self):
# Test if the maximum_datetime on the editor is mutated after init,
# the values on the edited object and the view are synchronized.
editor_factory = DatetimeEditor(
maximum_datetime=datetime.datetime(2000, 1, 1),
)
view = get_date_time_simple_view(editor_factory)
instance = InstanceWithDatetime()
with reraise_exceptions(), self.launch_editor(
instance, view
) as editor:
# This value is in-range
instance.date_time = datetime.datetime(1999, 1, 1)
# Now change the editor's maximum datetime such that the original
# value is out-of-range
new_maximum_datetime = datetime.datetime(1900, 1, 1)
editor.maximum_datetime = new_maximum_datetime
# does not seem needed to flush the event loop, but just in case.
process_cascade_events()
displayed_value = to_datetime(editor.control.dateTime())
self.assertEqual(instance.date_time, displayed_value)
self.assertEqual(displayed_value, new_maximum_datetime)
def test_datetime_editor_python_datetime_out_of_bound(self):
# The minimum datetime supported by Qt is larger than the minimum
# datetime supported by Python.
editor_factory = DatetimeEditor()
view = get_date_time_simple_view(editor_factory)
init_datetime = datetime.datetime(1900, 1, 1)
instance = InstanceWithDatetime(date_time=init_datetime)
with reraise_exceptions(), self.launch_editor(
instance, view
) as editor:
# This value is too early and is not supported by Qt
# But the editor should not crash
new_value = datetime.datetime(1, 1, 1)
instance.date_time = new_value
# does not seem needed to flush the event loop, but just in case.
process_cascade_events()
displayed_value = to_datetime(editor.control.dateTime())
# The value has changed to a filled value
self.assertNotEqual(instance.date_time, new_value)
self.assertEqual(displayed_value, instance.date_time)
def test_datetime_editor_qt_datetime_out_of_bound(self):
# The maximum datetime supported by Qt is larger than the maximum
# datetime supported by Python
editor_factory = DatetimeEditor()
view = get_date_time_simple_view(editor_factory)
init_datetime = datetime.datetime(1900, 1, 1)
instance = InstanceWithDatetime(date_time=init_datetime)
with reraise_exceptions(), self.launch_editor(
instance, view
) as editor:
# the user set the datetime on the Qt widget to a value
# too large for Python
from pyface.qt.QtCore import QDateTime, QDate, QTime
q_datetime = QDateTime(
QDate(datetime.MAXYEAR + 1, 1, 1), QTime(0, 0)
)
editor.control.setDateTime(q_datetime)
# Get the displayed value back.
displayed_value = to_datetime(editor.control.dateTime())
self.assertEqual(instance.date_time, displayed_value)
@contextlib.contextmanager
def launch_editor(self, object, view):
with create_ui(object, dict(view=view)) as ui:
(editor,) = ui._editors
yield editor
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