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# Copyright 2021-2023 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import contextlib
import logging
import os
from bumble import utils
from pyee import EventEmitter
from unittest.mock import MagicMock
def test_on() -> None:
emitter = EventEmitter()
with contextlib.closing(utils.EventWatcher()) as context:
mock = MagicMock()
context.on(emitter, 'event', mock)
emitter.emit('event')
assert not emitter.listeners('event')
assert mock.call_count == 1
def test_on_decorator() -> None:
emitter = EventEmitter()
with contextlib.closing(utils.EventWatcher()) as context:
mock = MagicMock()
@context.on(emitter, 'event')
def on_event(*_) -> None:
mock()
emitter.emit('event')
assert not emitter.listeners('event')
assert mock.call_count == 1
def test_multiple_handlers() -> None:
emitter = EventEmitter()
with contextlib.closing(utils.EventWatcher()) as context:
mock = MagicMock()
context.once(emitter, 'a', mock)
context.once(emitter, 'b', mock)
emitter.emit('b', 'b')
assert not emitter.listeners('a')
assert not emitter.listeners('b')
mock.assert_called_once_with('b')
# -----------------------------------------------------------------------------
def run_tests():
test_on()
test_on_decorator()
test_multiple_handlers()
# -----------------------------------------------------------------------------
if __name__ == '__main__':
logging.basicConfig(level=os.environ.get('BUMBLE_LOGLEVEL', 'INFO').upper())
run_tests()
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