fix test suite warnings

fix a handful of warnings that were emitting but not raising,
usually because they were inside an "expect_warnings" block.

modify "expect_warnings" to always use "raise_on_any_unexpected"
behavior; remove this parameter.

Fixed issue in semi-private ``await_only()`` and ``await_fallback()``
concurrency functions where the given awaitable would remain un-awaited if
the function threw a ``GreenletError``, which could cause "was not awaited"
warnings later on if the program continued. In this case, the given
awaitable is now cancelled before the exception is thrown.

Change-Id: I33668c5e8c670454a3d879e559096fb873b57244

1 files changed, 1 insertions, 1 deletions

diff --git a/examples/versioned_history/test_versioning.py b/examples/versioned_history/test_versioning.py
index 9caadc043..392a415ff 100644
--- a/examples/versioned_history/test_versioning.py
+++ b/examples/versioned_history/test_versioning.py
@@ -13,9 +13,9 @@ from sqlalchemy import Integer
 from sqlalchemy import join
 from sqlalchemy import select
 from sqlalchemy import String
-from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import clear_mappers
 from sqlalchemy.orm import column_property
+from sqlalchemy.orm import declarative_base
 from sqlalchemy.orm import DeclarativeBase
 from sqlalchemy.orm import deferred
 from sqlalchemy.orm import exc as orm_exc