async def test_async_iteration_inception() -> None:
# iterable to async source to async iterator to async source
ys = await subscribe(AsyncObservable.from_iterable([1, 2, 3]))
xs = AsyncObservable.from_iterable(ys)
result = []
async with subscribe(xs) as stream:
async for x in stream:
result.append(x)
assert result == [1, 2, 3]
async def test_concat_special_iadd():
xs = AsyncObservable.from_iterable(range(5))
ys = AsyncObservable.from_iterable(range(5, 10))
result = []
async def asend(value):
log.debug("test_merge_done:asend(%s)", value)
result.append(value)
xs += ys
await run(xs, AsyncAnonymousObserver(asend))
assert result == list(range(10))
async def test_chain_complex_pipe():
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value) -> int:
return value * 10
async def predicate(value) -> bool:
await asyncio.sleep(0.1)
return value > 1
async def long_running(value) -> AsyncObservable:
return AsyncObservable.from_iterable([value])
ys = (xs
.where(predicate)
.select(mapper)
.select_many(long_running))
async def on_next(value):
result.append(value)
obv = AsyncAnonymousObserver(on_next)
sub = await ys.subscribe(obv)
await obv
assert result == [20, 30]
async def test_pipe_complex_pipe():
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value):
return value * 10
async def predicate(value):
await asyncio.sleep(0.1)
return value > 1
async def long_running(value):
return AsyncObservable.from_iterable([value])
ys = pipe(xs,
op.filter(predicate),
op.map(mapper),
op.flat_map(long_running)
)
async with subscribe(ys) as stream:
async for value in stream:
result.append(value)
assert result == [20, 30]
def test_accepts_type_definition_with_sync_subscribe_function():
SubscriptionType = GraphQLObjectType(
name='Subscription',
fields=OrderedDict([
('importantEmail',
GraphQLField(
EmailEventType,
resolver=lambda *_: AsyncObservable.from_iterable([None]))),
]))
test_schema = GraphQLSchema(query=QueryType, subscription=SubscriptionType)
stream = AsyncSingleStream()
send_important_email, subscription = create_subscription(
stream, test_schema)
email = Email(
from_='*****@*****.**',
subject='Alright',
message='Tests are good',
unread=True,
)
l = []
fut1 = asyncio.ensure_future(p_subscribe(l, stream))
fut2 = asyncio.ensure_future(send_important_email(email))
asyncio.get_event_loop().run_until_complete(asyncio.gather(fut1, fut2))
assert l # [0].data == {'importantEmail': None}
async def test_forward_pipe_complex_pipe() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value) -> int:
return value * 10
async def predicate(value) -> bool:
await asyncio.sleep(0.1)
return value > 1
async def long_running(value) -> AsyncObservable[int]:
return AsyncObservable.from_iterable([value])
ys = (xs
| _.filter(predicate)
| _.map(mapper)
| _.flat_map(long_running)
| _.to_async_iterable()
)
async for value in ys:
result.append(value)
assert result == [20, 30]
async def test_async_comprehension() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3])
async with subscribe(xs) as stream:
result = [x async for x in stream]
assert result == [1, 2, 3]
async def test_async_iteration() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
async for x in to_async_iterable(xs):
result.append(x)
assert result == [1, 2, 3]
async def test_take_negative() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3, 4, 5])
values = []
async def asend(value) -> None:
values.append(value)
with pytest.raises(ValueError):
take(-1, xs)
async def test_async_iteration_aync_with() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
async with subscribe(xs) as stream:
async for x in stream:
result.append(x)
assert result == [1, 2, 3]
async def test_async_iteration() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
stream = await subscribe(xs)
async for x in stream:
result.append(x)
stream.cancel()
assert result == [1, 2, 3]
async def test_async_iteration_aync_with() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
obv = AsyncIteratorObserver()
async with subscribe(xs, obv):
async for x in obv:
result.append(x)
assert result == [1, 2, 3]
async def main() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3, 4, 5])
async def mapper(value) -> AsyncObservable:
fut = executor.submit(long_running, value)
return AsyncObservable.unit(wrap_future(fut))
ys = xs | op.flat_map(mapper) | op.to_async_iterable()
async for x in ys:
print(x)
async def main():
xs = AsyncObservable.from_iterable([1, 2, 3, 4, 5])
async def mapper(value):
fut = executor.submit(long_running, value)
return AsyncObservable.unit(wrap_future(fut))
ys = xs | op.flat_map(mapper)
async with subscribe(ys) as stream:
async for x in stream:
print(x)
async def main():
xs = AsyncObservable.from_iterable(range(10))
# Split into odds and evens
odds = xs | op.filter(lambda x: x % 2 == 1)
evens = xs | op.filter(lambda x: x % 2 == 0)
async def mysink(value):
print(value)
await subscribe(odds, AsyncAnonymousObserver(mysink))
await subscribe(evens, AsyncAnonymousObserver(mysink))
async def test_async_iteration_inception() -> None:
# iterable to async source to async iterator to async source
obv = AsyncIteratorObserver()
xs = AsyncObservable.from_iterable([1, 2, 3])
await subscribe(xs, obv)
ys = from_async_iterable(obv)
result = []
async for y in to_async_iterable(ys):
result.append(y)
assert result == [1, 2, 3]
async def test_slice_step():
xs = AsyncObservable.from_iterable([1, 2, 3, 4, 5])
values = []
async def asend(value):
values.append(value)
ys = xs[::2]
result = await run(ys, AsyncAnonymousObserver(asend))
assert result == 5
assert values == [1, 3, 5]
async def test_take_zero() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3, 4, 5])
values = []
async def asend(value) -> None:
values.append(value)
ys = take(0, xs)
with pytest.raises(CancelledError):
await run(ys, AnonymousAsyncObserver(asend))
assert values == []
async def test_slice_special():
xs = AsyncObservable.from_iterable([1, 2, 3, 4, 5])
values = []
async def asend(value):
values.append(value)
ys = xs[1:-1]
result = await run(ys, AnonymousAsyncObserver(asend))
assert result == 4
assert values == [2, 3, 4]
async def test_take_normal() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3, 4, 5])
values = []
async def asend(value) -> None:
values.append(value)
ys = take(2, xs)
result = await run(ys, AnonymousAsyncObserver(asend))
assert result == 2
assert values == [1, 2]
async def test_pipe_map():
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value):
return value * 10
ys = pipe(xs, op.map(mapper))
async def asend(value):
result.append(value)
await run(ys, AnonymousAsyncObserver(asend))
assert result == [10, 20, 30]
async def test_forward_pipe_map() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value) -> int:
return value * 10
ys = xs | _.map(mapper)
async def asend(value) -> None:
result.append(value)
await run(ys, AsyncAnonymousObserver(asend))
assert result == [10, 20, 30]
async def test_chain_map():
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value):
return value * 10
ys = chain(xs).select(mapper)
async def on_next(value):
result.append(value)
sub = await ys.subscribe(AnonymousAsyncObserver(on_next))
await sub
assert result == [10, 20, 30]
async def test_pipe_simple_pipe():
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value):
return value * 10
async def predicate(value):
await asyncio.sleep(0.1)
return value > 1
ys = pipe(xs, _.filter(predicate), _.map(mapper))
async def asend(value):
result.append(value)
await run(ys, AsyncAnonymousObserver(asend))
assert result == [20, 30]
async def test_forward_pipe_simple_pipe() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value) -> int:
return value * 10
async def predicate(value) -> bool:
await asyncio.sleep(0.1)
return value > 1
ys = xs | _.filter(predicate) | _.map(mapper)
async def asend(value) -> None:
result.append(value)
await run(ys, AsyncAnonymousObserver(asend))
assert result == [20, 30]
async def test_chain_simple_pipe():
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value):
return value * 10
async def predicate(value):
await asyncio.sleep(0.1)
return value > 1
ys = chain(xs).where(predicate).select(mapper)
async def on_next(value):
result.append(value)
sub = await ys.subscribe(AnonymousAsyncObserver(on_next))
await sub
assert result == [20, 30]
async def test_chain_simple_pipe():
xs = AsyncObservable.from_iterable([1, 2, 3])
result = []
def mapper(value):
return value * 10
async def predicate(value) -> bool:
await asyncio.sleep(0.1)
return value > 1
ys = xs.where(predicate).select(mapper)
async def on_next(value) -> None:
result.append(value)
obv = AsyncAnonymousObserver(on_next)
async with ys.subscribe(obv):
await obv
assert result == [20, 30]
def from_iterable(cls, iter):
return ChainedAsyncObservable(AsyncObservable.from_iterable(iter))
async def test_async_comprehension() -> None:
xs = AsyncObservable.from_iterable([1, 2, 3])
result = [x async for x in to_async_iterable(xs)]
assert result == [1, 2, 3]
async def long_running(value):
return AsyncObservable.from_iterable([value])