""" Actor model API testing """ import pytest import tractor async def rx_price_quotes_from_brokerd(us_symbols): """Verify we can spawn a daemon actor and retrieve streamed price data. """ async with tractor.find_actor('brokerd') as portals: if not portals: # only one per host address, spawns an actor if None async with tractor.open_nursery() as nursery: # no brokerd actor found portal = await nursery.start_actor( 'brokerd', rpc_module_paths=['piker.brokers.data'], ) # gotta expose in a broker agnostic way... # retrieve initial symbol data # sd = await portal.run( # 'piker.brokers.data', 'symbol_data', symbols=us_symbols) # assert list(sd.keys()) == us_symbols gen = await portal.run( 'piker.brokers.data', 'start_quote_stream', broker='robinhood', tickers=us_symbols, ) # it'd sure be nice to have an asyncitertools here... async for quotes in gen: assert quotes for key in quotes: assert key in us_symbols break # terminate far-end async-gen # await gen.asend(None) # break # stop all spawned subactors await nursery.cancel() # arbitter is cancelled here due to `find_actors()` internals # (which internally uses `get_arbiter` which kills its channel # server scope on exit) def test_rx_price_quotes_from_brokerd(us_symbols): tractor.run( rx_price_quotes_from_brokerd, us_symbols, name='arbiter', )