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# coding: utf-8
#
# Copyright 2011 Yesudeep Mangalapilly <yesudeep@gmail.com>
# Copyright 2012 Google, Inc & contributors.
#
# 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
#
# http://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 pytest
from watchdog.utils import platform
if not platform.is_windows(): # noqa
pytest.skip("Windows only.", allow_module_level=True)
import os
import os.path
from queue import Empty, Queue
from time import sleep
from watchdog.events import (
DirCreatedEvent,
DirMovedEvent,
)
from watchdog.observers.api import ObservedWatch
from watchdog.observers.read_directory_changes import WindowsApiEmitter
from .shell import (
mkdir,
mkdtemp,
mv,
rm
)
SLEEP_TIME = 2
# Path with non-ASCII
temp_dir = os.path.join(mkdtemp(), u"Strange \N{SNOWMAN}")
os.makedirs(temp_dir)
def p(*args):
"""
Convenience function to join the temporary directory path
with the provided arguments.
"""
return os.path.join(temp_dir, *args)
@pytest.fixture
def event_queue():
yield Queue()
@pytest.fixture
def emitter(event_queue):
watch = ObservedWatch(temp_dir, True)
em = WindowsApiEmitter(event_queue, watch, timeout=0.2)
yield em
em.stop()
def test___init__(event_queue, emitter):
emitter.start()
sleep(SLEEP_TIME)
mkdir(p('fromdir'))
sleep(SLEEP_TIME)
mv(p('fromdir'), p('todir'))
sleep(SLEEP_TIME)
emitter.stop()
# What we need here for the tests to pass is a collection type
# that is:
# * unordered
# * non-unique
# A multiset! Python's collections.Counter class seems appropriate.
expected = {
DirCreatedEvent(p('fromdir')),
DirMovedEvent(p('fromdir'), p('todir')),
}
got = set()
while True:
try:
event, _ = event_queue.get_nowait()
except Empty:
break
else:
got.add(event)
assert expected == got
def test_root_deleted(event_queue, emitter):
r"""Test the event got when removing the watched folder.
The regression to prevent is:
Exception in thread Thread-1:
Traceback (most recent call last):
File "watchdog\observers\winapi.py", line 333, in read_directory_changes
ctypes.byref(nbytes), None, None)
File "watchdog\observers\winapi.py", line 105, in _errcheck_bool
raise ctypes.WinError()
PermissionError: [WinError 5] Access refused.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Python37-32\lib\threading.py", line 926, in _bootstrap_inner
self.run()
File "watchdog\observers\api.py", line 145, in run
self.queue_events(self.timeout)
File "watchdog\observers\read_directory_changes.py", line 76, in queue_events
winapi_events = self._read_events()
File "watchdog\observers\read_directory_changes.py", line 73, in _read_events
return read_events(self._handle, self.watch.path, self.watch.is_recursive)
File "watchdog\observers\winapi.py", line 387, in read_events
buf, nbytes = read_directory_changes(handle, path, recursive)
File "watchdog\observers\winapi.py", line 340, in read_directory_changes
return _generate_observed_path_deleted_event()
File "watchdog\observers\winapi.py", line 298, in _generate_observed_path_deleted_event
event = FILE_NOTIFY_INFORMATION(0, FILE_ACTION_DELETED_SELF, len(path), path.value)
TypeError: expected bytes, str found
"""
emitter.start()
sleep(SLEEP_TIME)
# This should not fail
rm(p(), recursive=True)
sleep(SLEEP_TIME)
# The emitter is automatically stopped, with no error
assert not emitter.should_keep_running()
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