Add a basic `open_channel_from()` streaming test

tests/test_infected_asyncio.py

@@ -2,7 +2,7 @@
 The most hipster way to force SC onto the stdlib's "async".
 
 '''
-from typing import Optional
+from typing import Optional, Iterable
 import asyncio
 import builtins
 import importlib
@@ -10,6 +10,7 @@ import importlib
 import pytest
 import trio
 import tractor
+from tractor import to_asyncio
 from tractor import RemoteActorError
 
 
@@ -176,17 +177,64 @@ def test_aio_cancelled_from_aio_causes_trio_cancelled(arb_addr):
         trio.run(main)
 
 
-def test_trio_error_cancels_aio(arb_addr):
-    ...
+# TODO:
+async def no_to_trio_in_args():
+    pass
+
+
+async def push_from_aio_task(
+
+    sequence: Iterable,
+    to_trio: trio.abc.SendChannel,
+
+) -> None:
+    for i in range(100):
+        print(f'asyncio sending {i}')
+        to_trio.send_nowait(i)
+        await asyncio.sleep(0.001)
+
+    print(f'asyncio streamer complete!')
+
+
+async def stream_from_aio():
+    seq = range(100)
+    expect = list(seq)
+
+    async with to_asyncio.open_channel_from(
+        push_from_aio_task,
+        sequence=seq,
+    ) as (first, chan):
+
+        pulled = [first]
+        async for value in chan:
+            print(f'trio received {value}')
+            pulled.append(value)
+
+        assert pulled == expect
+
+    print('trio guest mode task completed!')
 
 
 def test_basic_interloop_channel_stream(arb_addr):
-    ...
+    async def main():
+        async with tractor.open_nursery() as n:
+            portal = await n.run_in_actor(
+                stream_from_aio,
+                infect_asyncio=True,
+            )
+            await portal.result()
+
+    trio.run(main)
 
 
-def test_trio_cancels_and_channel_exits(arb_addr):
-    ...
+
+# def test_trio_error_cancels_intertask_chan(arb_addr):
+#     ...
 
 
-def test_aio_errors_and_channel_propagates(arb_addr):
-    ...
+# def test_trio_cancels_and_channel_exits(arb_addr):
+#     ...
+
+
+# def test_aio_errors_and_channel_propagates(arb_addr):
+#     ...