Tweak some tests for spurious failues

With the seeming cause that some cases occasionally raise
`ExceptionGroup` instead of a (collapsed out) single error which, in
those cases at least try to check that `.exceptions` has the original
error.

pytest.ini

@@ -1,4 +1,4 @@
-# vim: ft=ini
+# vim: ft=conf
 # pytest.ini for tractor
 
 [pytest]

tests/test_advanced_faults.py

@@ -18,7 +18,10 @@ from conftest import (
 @pytest.mark.parametrize(
     'debug_mode',
     [False, True],
-    ids=['no_debug_mode', 'debug_mode'],
+    ids=[
+        'no_debug_mode',
+        'debug_mode',
+    ],
 )
 @pytest.mark.parametrize(
     'ipc_break',

tests/test_advanced_streaming.py

@@ -6,6 +6,7 @@ from collections import Counter
 import itertools
 import platform
 
+import pytest
 import trio
 import tractor
 
@@ -143,8 +144,16 @@ def test_dynamic_pub_sub():
 
     try:
         trio.run(main)
-    except trio.TooSlowError:
-        pass
+    except (
+        trio.TooSlowError,
+        ExceptionGroup,
+    ) as err:
+        if isinstance(err, ExceptionGroup):
+            for suberr in err.exceptions:
+                if isinstance(suberr, trio.TooSlowError):
+                    break
+            else:
+                pytest.fail('Never got a `TooSlowError` ?')
 
 
 @tractor.context

tests/test_infected_asyncio.py

@@ -70,7 +70,7 @@ def test_trio_cancels_aio_on_actor_side(reg_addr):
 async def asyncio_actor(
 
     target: str,
-    expect_err: Optional[Exception] = None
+    expect_err: Exception|None = None
 
 ) -> None:
 
@@ -114,10 +114,21 @@ def test_aio_simple_error(reg_addr):
                 infect_asyncio=True,
             )
 
-    with pytest.raises(RemoteActorError) as excinfo:
+    with pytest.raises(
+        expected_exception=(RemoteActorError, ExceptionGroup),
+    ) as excinfo:
         trio.run(main)
 
     err = excinfo.value
+
+    # might get multiple `trio.Cancelled`s as well inside an inception
+    if isinstance(err, ExceptionGroup):
+        err = next(itertools.dropwhile(
+            lambda exc: not isinstance(exc, tractor.RemoteActorError),
+            err.exceptions
+        ))
+        assert err
+
     assert isinstance(err, RemoteActorError)
     assert err.type == AssertionError
 
@@ -290,11 +301,22 @@ def test_aio_cancelled_from_aio_causes_trio_cancelled(reg_addr):
                 infect_asyncio=True,
             )
 
-    with pytest.raises(RemoteActorError) as excinfo:
+    with pytest.raises(
+        expected_exception=(RemoteActorError, ExceptionGroup),
+    ) as excinfo:
         trio.run(main)
 
+    # might get multiple `trio.Cancelled`s as well inside an inception
+    err = excinfo.value
+    if isinstance(err, ExceptionGroup):
+        err = next(itertools.dropwhile(
+            lambda exc: not isinstance(exc, tractor.RemoteActorError),
+            err.exceptions
+        ))
+        assert err
+
     # ensure boxed error is correct
-    assert excinfo.value.type == to_asyncio.AsyncioCancelled
+    assert err.type == to_asyncio.AsyncioCancelled
 
 
 # TODO: verify open_channel_from will fail on this..

tests/test_rpc.py

@@ -1,6 +1,8 @@
-"""
-RPC related
-"""
+'''
+RPC (or maybe better labelled as "RTS: remote task scheduling"?)
+related API and error checks.
+
+'''
 import itertools
 
 import pytest
@@ -52,8 +54,13 @@ async def short_sleep():
         (['tmp_mod'], 'import doggy', ModuleNotFoundError),
         (['tmp_mod'], '4doggy', SyntaxError),
     ],
-    ids=['no_mods', 'this_mod', 'this_mod_bad_func', 'fail_to_import',
-         'fail_on_syntax'],
+    ids=[
+        'no_mods',
+        'this_mod',
+        'this_mod_bad_func',
+        'fail_to_import',
+        'fail_on_syntax',
+    ],
 )
 def test_rpc_errors(
     reg_addr,
@@ -127,7 +134,9 @@ def test_rpc_errors(
         run()
     else:
         # underlying errors aren't propagated upwards (yet)
-        with pytest.raises(remote_err) as err:
+        with pytest.raises(
+            expected_exception=(remote_err, ExceptionGroup),
+        ) as err:
             run()
 
         # get raw instance from pytest wrapper