Add initial infected asyncio error propagation test

tests/test_infected_asyncio.py

@@ -0,0 +1,24 @@
+import asyncio
+
+import pytest
+import tractor
+
+async def sleep_and_err():
+    await asyncio.sleep(0.1)
+    assert 0
+
+
+async def asyncio_actor():
+    assert tractor.current_actor().is_infected_aio()
+
+    await tractor.to_asyncio.run_task(sleep_and_err)
+
+
+def test_infected_simple_error(arb_addr):
+
+    async def main():
+        async with tractor.open_nursery() as n:
+            await n.run_in_actor(asyncio_actor, infected_asyncio=True)
+
+    with pytest.raises(tractor.RemoteActorError) as excinfo:
+        tractor.run(main, arbiter_addr=arb_addr)

tractor/to_asyncio.py

@@ -164,16 +164,19 @@ def run_as_asyncio_guest(
     :)
     """
     async def aio_main(trio_main):
+
         loop = asyncio.get_running_loop()
 
         trio_done_fut = asyncio.Future()
 
         def trio_done_callback(main_outcome):
+
             log.info(f"trio_main finished: {main_outcome!r}")
             trio_done_fut.set_result(main_outcome)
 
         # start the infection: run trio on the asyncio loop in "guest mode"
         log.info(f"Infecting asyncio process with {trio_main}")
+
         trio.lowlevel.start_guest_run(
             trio_main,
             run_sync_soon_threadsafe=loop.call_soon_threadsafe,