def test_notification_manager_no_gui(monkeypatch):
"""
Direct test of the notification manager.
This does not test the integration with the gui, but test that the
notification manager itself can receive a info, warning or error.
"""
try:
from napari._qt.dialogs.qt_notification import NapariQtNotification
monkeypatch.setattr(NapariQtNotification, "DISMISS_AFTER", 0)
except ModuleNotFoundError:
pass
previous_exhook = sys.excepthook
with notification_manager:
notification_manager.records.clear()
# save all of the events that get emitted
store: List[Notification] = []
notification_manager.notification_ready.connect(store.append)
show_info('this is one way of showing an information message')
assert (len(
notification_manager.records) == 1), notification_manager.records
assert store[-1].type == 'info'
notification_manager.receive_info(
'This is another information message')
assert len(notification_manager.records) == 2
assert store[-1].type == 'info'
# test that exceptions that go through sys.excepthook are catalogued
with pytest.raises(PurposefulException):
raise PurposefulException("this is an exception")
# pytest intercepts the error, so we can manually call sys.excepthook
assert sys.excepthook == notification_manager.receive_error
sys.excepthook(*sys.exc_info())
assert len(notification_manager.records) == 3
assert store[-1].type == 'error'
# test that warnings that go through showwarning are catalogued
# again, pytest intercepts this, so just manually trigger:
assert warnings.showwarning == notification_manager.receive_warning
warnings.showwarning('this is a warning', UserWarning, '', 0)
assert len(notification_manager.records) == 4
assert store[-1].type == 'warning'
show_error('This is an error')
assert len(notification_manager.records) == 5
assert store[-1].type == 'error'
show_warning('This is a warning')
assert len(notification_manager.records) == 6
assert store[-1].type == 'warning'
# make sure we've restored the except hook
assert sys.excepthook == previous_exhook
assert all(isinstance(x, Notification) for x in store)
def test_notification_manager_no_gui():
"""
Direct test of the notification manager.
This does not test the integration with the gui, but test that the
notification manager itself can receive a info, warning or error.
"""
previous_exhook = sys.excepthook
with notification_manager:
# save all of the events that get emitted
store: List[Notification] = []
_append = lambda e: store.append(e) # lambda needed on py3.7 # noqa
notification_manager.notification_ready.connect(_append)
show_info('this is one way of showing an information message')
assert len(notification_manager.records) == 1
assert store[-1].type == 'info'
notification_manager.receive_info(
'This is another information message')
assert len(notification_manager.records) == 2
assert store[-1].type == 'info'
# test that exceptions that go through sys.excepthook are catalogued
class PurposefulException(Exception):
pass
with pytest.raises(PurposefulException):
raise PurposefulException("this is an exception")
# pytest intercepts the error, so we can manually call sys.excepthook
assert sys.excepthook == notification_manager.receive_error
sys.excepthook(*sys.exc_info())
assert len(notification_manager.records) == 3
assert store[-1].type == 'error'
# test that warnings that go through showwarning are catalogued
# again, pytest intercepts this, so just manually trigger:
assert warnings.showwarning == notification_manager.receive_warning
warnings.showwarning('this is a warning', UserWarning, '', 0)
assert len(notification_manager.records) == 4
assert store[-1].type == 'warning'
# make sure we've restored the except hook
assert sys.excepthook == previous_exhook
assert all(isinstance(x, Notification) for x in store)