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import asyncio
import logging
from copy import copy
from typing import Any, List
from unittest import mock
import pytest
from aio_pika.tools import CallbackCollection, ensure_awaitable
log = logging.getLogger(__name__)
# noinspection PyTypeChecker
class TestCase:
@pytest.fixture
def instance(self) -> mock.MagicMock:
return mock.MagicMock()
@pytest.fixture
def collection(self, instance):
return CallbackCollection(instance)
def test_basic(self, collection):
def func(sender, *args, **kwargs):
pass
collection.add(func)
assert func in collection
with pytest.raises(ValueError):
collection.add(None)
collection.remove(func)
with pytest.raises(LookupError):
collection.remove(func)
for _ in range(10):
collection.add(func)
assert len(collection) == 1
collection.freeze()
with pytest.raises(RuntimeError):
collection.freeze()
assert len(collection) == 1
with pytest.raises(RuntimeError):
collection.add(func)
with pytest.raises(RuntimeError):
collection.remove(func)
with pytest.raises(RuntimeError):
collection.clear()
collection2 = copy(collection)
collection.unfreeze()
assert not copy(collection).is_frozen
assert collection.is_frozen != collection2.is_frozen
with pytest.raises(RuntimeError):
collection.unfreeze()
collection.clear()
assert collection2
assert not collection
def test_callback_call(self, collection):
l1: List[Any] = list()
l2: List[Any] = list()
assert l1 == l2
collection.add(lambda sender, x: l1.append(x))
collection.add(lambda sender, x: l2.append(x))
collection(1)
collection(2)
assert l1 == l2
assert l1 == [1, 2]
async def test_blank_awaitable_callback(self, collection):
await collection()
async def test_awaitable_callback(
self, event_loop, collection, instance,
):
future = event_loop.create_future()
shared = []
async def coro(arg):
nonlocal shared
shared.append(arg)
def task_maker(arg):
return event_loop.create_task(coro(arg))
collection.add(future.set_result)
collection.add(coro)
collection.add(task_maker)
await collection()
assert shared == [instance, instance]
assert await future == instance
async def test_collection_create_tasks(
self, event_loop, collection, instance,
):
future = event_loop.create_future()
async def coro(arg):
await asyncio.sleep(0.5)
future.set_result(arg)
collection.add(coro)
# noinspection PyAsyncCall
collection()
assert await future == instance
async def test_collection_run_tasks_parallel(self, collection):
class Callable:
def __init__(self):
self.counter = 0
async def __call__(self, *args, **kwargs):
await asyncio.sleep(1)
self.counter += 1
callables = [Callable() for _ in range(100)]
for callable in callables:
collection.add(callable)
await asyncio.wait_for(collection(), timeout=2)
assert [c.counter for c in callables] == [1] * 100
class TestEnsureAwaitable:
async def test_non_coroutine(self):
with pytest.deprecated_call(match="You probably registering the"):
func = ensure_awaitable(lambda x: x * x)
with pytest.deprecated_call(match="Function"):
assert await func(2) == 4
with pytest.deprecated_call(match="Function"):
assert await func(4) == 16
async def test_coroutine(self):
async def square(x):
return x * x
func = ensure_awaitable(square)
assert await func(2) == 4
assert await func(4) == 16
async def test_something_awaitable_returned(self):
def non_coro(x):
async def coro(x):
return x * x
return coro(x)
with pytest.deprecated_call(match="You probably registering the"):
func = ensure_awaitable(non_coro)
assert await func(2) == 4
async def test_something_non_awaitable_returned(self):
def non_coro(x):
def coro(x):
return x * x
return coro(x)
with pytest.deprecated_call(match="You probably registering the"):
func = ensure_awaitable(non_coro)
with pytest.deprecated_call(match="Function"):
assert await func(2) == 4
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