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from __future__ import annotations
from watchdog import events
from watchdog.utils.bricks import SkipRepeatsQueue
def test_basic_queue():
q = SkipRepeatsQueue()
e1 = (2, "fred")
e2 = (2, "george")
e3 = (4, "sally")
q.put(e1)
q.put(e2)
q.put(e3)
assert e1 == q.get()
assert e2 == q.get()
assert e3 == q.get()
assert q.empty()
def test_allow_nonconsecutive():
q = SkipRepeatsQueue()
e1 = (2, "fred")
e2 = (2, "george")
q.put(e1)
q.put(e2)
q.put(e1) # repeat the first entry
assert e1 == q.get()
assert e2 == q.get()
assert e1 == q.get()
assert q.empty()
def test_put_with_watchdog_events():
# FileSystemEvent.__ne__() uses the key property without
# doing any type checking. Since _last_item is set to
# None in __init__(), an AttributeError is raised when
# FileSystemEvent.__ne__() tries to use None.key
queue = SkipRepeatsQueue()
dummy_file = "dummy.txt"
event = events.FileCreatedEvent(dummy_file)
queue.put(event)
assert queue.get() is event
def test_prevent_consecutive():
q = SkipRepeatsQueue()
e1 = (2, "fred")
e2 = (2, "george")
q.put(e1)
q.put(e1) # repeat the first entry (this shouldn't get added)
q.put(e2)
assert e1 == q.get()
assert e2 == q.get()
assert q.empty()
def test_consecutives_allowed_across_empties():
q = SkipRepeatsQueue()
e1 = (2, "fred")
q.put(e1)
q.put(e1) # repeat the first entry (this shouldn't get added)
assert e1 == q.get()
assert q.empty()
q.put(e1) # this repeat is allowed because 'last' added is now gone from queue
assert e1 == q.get()
assert q.empty()
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