Sprinkle `spawn_method` fixture throughout tests

tests/test_cancellation.py

@@ -110,7 +110,7 @@ async def stream_forever():
 
 
 @tractor_test
-async def test_cancel_infinite_streamer():
+async def test_cancel_infinite_streamer(spawn_method):
 
     # stream for at most 1 seconds
     with trio.move_on_after(1) as cancel_scope:
@@ -139,7 +139,7 @@ async def test_cancel_infinite_streamer():
     ids=['one_actor', 'two_actors'],
 )
 @tractor_test
-async def test_some_cancels_all(num_actors_and_errs):
+async def test_some_cancels_all(num_actors_and_errs, spawn_method):
     """Verify a subset of failed subactors causes all others in
     the nursery to be cancelled just like the strategy in trio.
 

tests/test_spawning.py

@@ -57,7 +57,7 @@ def movie_theatre_question():
 
 
 @tractor_test
-async def test_movie_theatre_convo():
+async def test_movie_theatre_convo(spawn_method):
     """The main ``tractor`` routine.
     """
     async with tractor.open_nursery() as n:
@@ -83,7 +83,7 @@ def cellar_door():
 
 
 @tractor_test
-async def test_most_beautiful_word():
+async def test_most_beautiful_word(spawn_method):
     """The main ``tractor`` routine.
     """
     async with tractor.open_nursery() as n:

tests/test_streaming.py

@@ -62,10 +62,14 @@ async def stream_from_single_subactor():
                 # await nursery.cancel()
 
 
-def test_stream_from_single_subactor(arb_addr):
+def test_stream_from_single_subactor(arb_addr, spawn_method):
     """Verify streaming from a spawned async generator.
     """
-    tractor.run(stream_from_single_subactor, arbiter_addr=arb_addr)
+    tractor.run(
+        stream_from_single_subactor,
+        arbiter_addr=arb_addr,
+        spawn_method=spawn_method,
+    )
 
 
 # this is the first 2 actors, streamer_1 and streamer_2