def test_iter(self, tmp_path):
file1 = tmp_path / "file1"
file1.touch()
with BasicWatcher([str(tmp_path)]) as watcher:
it = IterateInThread(watcher)
file2 = tmp_path / "file2"
file2.touch()
# Check that we get notified about file2
_, event_type, path = next(it)
print(event_type, path)
while path != str(file2):
# On MacOS, for whatever reason, we get events about
# the creation of tmp_path and file1. Skip them.
_, event_type, path = next(it)
print(event_type, path)
file1_renamed = tmp_path / "file1_renamed"
file1.rename(file1_renamed)
# Check for notification of renamed file.
while path != str(file1_renamed):
# Depending on platform, we may get more than one
# event for file1. (E.g. on Linux we get both a
# 'created' and a 'closed' event.)
# (Also, on MacOS, for reasons not understood,
# we appear to get a 'created' event for file1.)
_, event_type, path = next(it)
print(event_type, path)
assert it.queue.empty()
def test_raises_error_if_started_twice(self, paths):
with BasicWatcher(paths) as watcher:
with pytest.raises(RuntimeError, match="already started"):
watcher.start()
def test_perverse_usage(self, paths):
# This exercises a bug which occurred when BasicWatcher was
# called with repeated (failing) values in observer_classes.
observer_classes = (BrokenObserver, BrokenObserver, PollingObserver)
with BasicWatcher(paths, observer_classes=observer_classes) as watcher:
assert isinstance(watcher.observer, BaseObserver)
def test_default_observer_is_polling(self, paths, capsys):
observer_classes = (BrokenObserver, BrokenObserver)
with pytest.raises(OSError, match=r"crapout"):
with BasicWatcher(paths, observer_classes=observer_classes):
pass
assert capsys.readouterr() == ("", "")
def test_default_observer_broken(self, paths, capsys):
observer_classes = (BrokenObserver, PollingObserver)
with BasicWatcher(paths, observer_classes=observer_classes) as watcher:
assert watcher.observer.__class__ is PollingObserver
assert "crapout" in capsys.readouterr().out
def test_creates_observer(self, paths):
with BasicWatcher(paths) as watcher:
assert isinstance(watcher.observer, BaseObserver)
