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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!
""" Tests for traitsui.testing._exception_handling """
import unittest
from pyface.api import GUI
from traitsui.tests._tools import (
requires_toolkit,
ToolkitName,
)
from traitsui.testing._exception_handling import reraise_exceptions
class TestExceptionHandling(unittest.TestCase):
@requires_toolkit([ToolkitName.qt, ToolkitName.wx])
def test_error_from_gui_captured_and_raise(self):
def raise_error_1():
raise ZeroDivisionError()
def raise_error_2():
raise IndexError()
# without the context manager:
# - with Qt5, the test run will be aborted prematurely.
# - with Qt4, the traceback is printed and the test passes.
# - with Wx, the traceback is printed and the test passes.
# With the context manager, the exception is always reraised.
gui = GUI()
with self.assertRaises(
RuntimeError
) as exception_context, self.assertLogs("traitsui") as watcher:
with reraise_exceptions():
gui.invoke_later(raise_error_1)
gui.invoke_later(raise_error_2)
gui.invoke_after(100, gui.stop_event_loop)
gui.start_event_loop()
error_msg = str(exception_context.exception)
self.assertIn("ZeroDivisionError", error_msg)
self.assertIn("IndexError", error_msg)
log_content1, log_content2 = watcher.output
self.assertIn("ZeroDivisionError", log_content1)
self.assertIn("IndexError", log_content2)
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