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"""
Test cases for the UI object.
"""
import nose.tools
from traits.has_traits import HasTraits
from traits.trait_types import Str, Int
import traitsui
from traitsui.item import Item
from traitsui.view import View
from traitsui.tests._tools import *
class FooDialog(HasTraits):
"""Test dialog that does nothing useful."""
my_int = Int(2)
my_str = Str('hallo')
traits_view = View(
Item('my_int'),
Item('my_str'),
buttons = ['OK']
)
@skip_if_not_wx
def test_reset_with_destroy_wx():
# Characterization test:
# UI.reset(destroy=True) destroys all ui children of the top control
foo = FooDialog()
ui = foo.edit_traits()
ui.reset(destroy=True)
# the top control is still there
nose.tools.assert_is_not_none(ui.control)
# but its children are gone
nose.tools.assert_equal(len(ui.control.GetChildren()), 0)
@skip_if_not_qt4
def test_reset_with_destroy_qt():
# Characterization test:
# UI.reset(destroy=True) destroys all ui children of the top control
from pyface import qt
foo = FooDialog()
ui = foo.edit_traits()
# decorate children's `deleteLater` function to check that it is called
# on `reset`. check only with the editor parts (only widgets are scheduled,
# see traitsui.qt4.toolkit.GUIToolkit.destroy_children)
for c in ui.control.children():
c.deleteLater = count_calls(c.deleteLater)
ui.reset(destroy=True)
# the top control is still there
nose.tools.assert_is_not_none(ui.control)
# but its children are scheduled for removal
for c in ui.control.children():
if isinstance(c, qt.QtGui.QWidget):
nose.tools.assert_equal(c.deleteLater._n_calls, 1)
@skip_if_not_wx
def test_reset_without_destroy_wx():
# Characterization test:
# UI.reset(destroy=False) destroys all editor controls, but leaves editors
# and ui children intact
import wx
foo = FooDialog()
ui = foo.edit_traits()
nose.tools.assert_equal(len(ui._editors), 2)
nose.tools.assert_is_instance(ui._editors[0],
traitsui.wx.text_editor.SimpleEditor)
nose.tools.assert_is_instance(ui._editors[0].control,
wx._controls.TextCtrl)
ui.reset(destroy=False)
nose.tools.assert_equal(len(ui._editors), 2)
nose.tools.assert_is_instance(ui._editors[0],
traitsui.wx.text_editor.SimpleEditor)
nose.tools.assert_is_none(ui._editors[0].control)
# children are still there: check first text control
text_ctrl = ui.control.FindWindowByName('text')
nose.tools.assert_is_not_none(text_ctrl)
@skip_if_not_qt4
def test_reset_without_destroy_qt():
# Characterization test:
# UI.reset(destroy=False) destroys all editor controls, but leaves editors
# and ui children intact
from pyface import qt
foo = FooDialog()
ui = foo.edit_traits()
nose.tools.assert_equal(len(ui._editors), 2)
nose.tools.assert_is_instance(ui._editors[0],
traitsui.qt4.text_editor.SimpleEditor)
nose.tools.assert_is_instance(ui._editors[0].control,
qt.QtGui.QLineEdit)
ui.reset(destroy=False)
nose.tools.assert_equal(len(ui._editors), 2)
nose.tools.assert_is_instance(ui._editors[0],
traitsui.qt4.text_editor.SimpleEditor)
nose.tools.assert_is_none(ui._editors[0].control)
# children are still there: check first text control
text_ctrl = ui.control.findChild(qt.QtGui.QLineEdit)
nose.tools.assert_is_not_none(text_ctrl)
@skip_if_not_wx
def test_destroy_after_ok_wx():
# Behavior: after pressing 'OK' in a dialog, the method UI.finish is
# called and the view control and its children are destroyed
import wx
foo = FooDialog()
ui = foo.edit_traits()
# keep references to the children of the ui to check that they were deleted
ui_children = []
for c in ui.control.GetChildren():
ui_children.append(c)
# press the OK button and close the dialog
okbutton = ui.control.FindWindowByName('button')
click_event = wx.CommandEvent(wx.wxEVT_COMMAND_BUTTON_CLICKED,
okbutton.GetId())
okbutton.ProcessEvent(click_event)
nose.tools.assert_is_none(ui.control)
# and its children have been destroyed
for c in ui_children:
with nose.tools.assert_raises(wx._core.PyDeadObjectError):
c.GetName()
@skip_if_not_qt4
def test_destroy_after_ok_qt():
# Behavior: after pressing 'OK' in a dialog, the method UI.finish is
# called and the view control and its children are destroyed
from pyface import qt
foo = FooDialog()
ui = foo.edit_traits()
# decorate children's `deleteLater` function to check that it is called
for c in ui.control.children():
c.deleteLater = count_calls(c.deleteLater)
# keep references to the children of the ui to check that they were deleted
ui_children = []
for c in ui.control.children():
ui_children.append(c)
# press the OK button and close the dialog
okb = ui.control.findChild(qt.QtGui.QPushButton)
okb.click()
nose.tools.assert_is_none(ui.control)
# children are scheduled for removal
for c in ui_children:
if isinstance(c, qt.QtGui.QWidget):
nose.tools.assert_equal(c.deleteLater._n_calls, 1)
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