Mostly drop run from local tests

tests/test_local.py

@@ -15,8 +15,8 @@ async def test_no_arbitter():
     """An arbitter must be established before any nurseries
     can be created.
 
-    (In other words ``tractor.run`` must be used instead of ``trio.run`` as is
-    done by the ``pytest-trio`` plugin.)
+    (In other words ``tractor.open_root_actor()`` must be engaged at
+    some point?)
     """
     with pytest.raises(RuntimeError):
         with tractor.open_nursery():
@@ -49,7 +49,8 @@ async def test_self_is_registered_localportal(arb_addr):
         assert isinstance(portal, tractor._portal.LocalPortal)
 
         with trio.fail_after(0.2):
-            sockaddr = await portal.run_from_ns('self', 'wait_for_actor', name='root')
+            sockaddr = await portal.run_from_ns(
+                    'self', 'wait_for_actor', name='root')
             assert sockaddr[0] == arb_addr
 
 
@@ -59,15 +60,19 @@ def test_local_actor_async_func(arb_addr):
     nums = []
 
     async def print_loop():
-        # arbiter is started in-proc if dne
-        assert tractor.current_actor().is_arbiter
 
-        for i in range(10):
-            nums.append(i)
-            await trio.sleep(0.1)
+        async with tractor.open_root_actor(
+            arbiter_addr=arb_addr,
+        ):
+            # arbiter is started in-proc if dne
+            assert tractor.current_actor().is_arbiter
+
+            for i in range(10):
+                nums.append(i)
+                await trio.sleep(0.1)
 
     start = time.time()
-    tractor.run(print_loop, arbiter_addr=arb_addr)
+    trio.run(print_loop)
 
     # ensure the sleeps were actually awaited
     assert time.time() - start >= 1