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# Copyright (c) 2014-2018 by Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in enthought/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!
from __future__ import (
absolute_import, division, print_function, unicode_literals
)
import os
from shutil import rmtree
from tempfile import mkdtemp
from unittest import TestCase
from traits.api import Bool
from traits.testing.unittest_tools import UnittestTools
from ..application import ApplicationExit, Application
EVENTS = [
'starting', 'started', 'application_initialized', 'stopping', 'stopped'
]
class TestingApp(Application):
#: Whether the app should start cleanly.
start_cleanly = Bool(True)
#: Whether the app should stop cleanly.
stop_cleanly = Bool(True)
#: Whether to try invoking exit method.
do_exit = Bool(False)
#: Whether the exit should be invoked as an error exit.
error_exit = Bool(False)
#: Whether to try force the exit (ie. ignore vetoes).
force_exit = Bool(False)
#: Whether to veto a call to the exit method.
veto_exit = Bool(False)
#: Whether or not a call to the exit method was vetoed.
exit_vetoed = Bool(False)
#: Whether exit preparation happened.
exit_prepared = Bool(False)
#: Whether exit preparation raises an error.
exit_prepared_error = Bool(False)
def start(self):
super(TestingApp, self).start()
return self.start_cleanly
def stop(self):
super(TestingApp, self).stop()
return self.stop_cleanly
def _run(self):
super(TestingApp, self)._run()
if self.do_exit:
if self.error_exit:
raise ApplicationExit("error message")
else:
self.exit(self.force_exit)
self.exit_vetoed = True
return True
def _exiting_fired(self, event):
event.veto = self.veto_exit
def _prepare_exit(self):
self.exit_prepared = True
if self.exit_prepared_error:
raise Exception("Exit preparation failed")
class TestApplication(TestCase, UnittestTools):
def setUp(self):
self.application_events = []
def event_listener(self, event):
self.application_events.append(event)
def connect_listeners(self, app):
for event in EVENTS:
app.on_trait_change(self.event_listener, event)
def test_defaults(self):
from traits.etsconfig.api import ETSConfig
app = Application()
self.assertEqual(app.home, ETSConfig.application_home)
self.assertEqual(app.user_data, ETSConfig.user_data)
self.assertEqual(app.company, ETSConfig.company)
def test_initialize_application_home(self):
dirpath = mkdtemp()
home = os.path.join(dirpath, "test")
app = Application(home=home)
app.initialize_application_home()
try:
self.assertTrue(os.path.exists(home))
finally:
rmtree(dirpath)
def test_lifecycle(self):
app = Application()
self.connect_listeners(app)
with self.assertMultiTraitChanges([app], EVENTS, []):
result = app.run()
self.assertTrue(result)
event_order = [event.event_type for event in self.application_events]
self.assertEqual(event_order, EVENTS)
def test_exit(self):
app = TestingApp(do_exit=True)
self.connect_listeners(app)
with self.assertMultiTraitChanges([app], EVENTS, []):
result = app.run()
self.assertTrue(result)
self.assertFalse(app.exit_vetoed)
self.assertTrue(app.exit_prepared)
event_order = [event.event_type for event in self.application_events]
self.assertEqual(event_order, EVENTS)
def test_exit_prepare_error(self):
app = TestingApp(do_exit=True, exit_prepared_error=True)
self.connect_listeners(app)
with self.assertMultiTraitChanges([app], EVENTS, []):
result = app.run()
self.assertTrue(result)
self.assertFalse(app.exit_vetoed)
self.assertTrue(app.exit_prepared)
event_order = [event.event_type for event in self.application_events]
self.assertEqual(event_order, EVENTS)
def test_veto_exit(self):
app = TestingApp(do_exit=True, veto_exit=True)
self.connect_listeners(app)
with self.assertMultiTraitChanges([app], EVENTS, []):
result = app.run()
self.assertTrue(result)
self.assertTrue(app.exit_vetoed)
self.assertFalse(app.exit_prepared)
event_order = [event.event_type for event in self.application_events]
self.assertEqual(event_order, EVENTS)
def test_force_exit(self):
app = TestingApp(do_exit=True, force_exit=True, veto_exit=True)
self.connect_listeners(app)
with self.assertMultiTraitChanges([app], EVENTS, []):
result = app.run()
self.assertTrue(result)
self.assertFalse(app.exit_vetoed)
self.assertTrue(app.exit_prepared)
event_order = [event.event_type for event in self.application_events]
self.assertEqual(event_order, EVENTS)
def test_error_exit(self):
app = TestingApp(do_exit=True, error_exit=True)
self.connect_listeners(app)
with self.assertMultiTraitChanges([app], EVENTS, []):
result = app.run()
self.assertFalse(result)
self.assertFalse(app.exit_vetoed)
event_order = [event.event_type for event in self.application_events]
self.assertEqual(event_order, EVENTS)
def test_bad_start(self):
app = TestingApp(start_cleanly=False)
self.connect_listeners(app)
with self.assertMultiTraitChanges([app], EVENTS[:1], EVENTS[1:]):
result = app.run()
self.assertFalse(result)
event_order = [event.event_type for event in self.application_events]
self.assertEqual(event_order, EVENTS[:1])
def test_bad_stop(self):
app = TestingApp(stop_cleanly=False)
self.connect_listeners(app)
with self.assertMultiTraitChanges([app], EVENTS[:-1], EVENTS[-1:]):
result = app.run()
self.assertFalse(result)
event_order = [event.event_type for event in self.application_events]
self.assertEqual(event_order, EVENTS[:-1])
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