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-rw-r--r--lib/sqlalchemy/testing/plugin/pytestplugin.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sqlalchemy/testing/plugin/pytestplugin.py b/lib/sqlalchemy/testing/plugin/pytestplugin.py
index f4c9efd55..005942913 100644
--- a/lib/sqlalchemy/testing/plugin/pytestplugin.py
+++ b/lib/sqlalchemy/testing/plugin/pytestplugin.py
@@ -74,6 +74,9 @@ def pytest_collection_modifyitems(session, config, items):
# new classes to a module on the fly.
rebuilt_items = collections.defaultdict(list)
+ items[:] = [
+ item for item in
+ items if isinstance(item.parent, pytest.Instance)]
test_classes = set(item.parent for item in items)
for test_class in test_classes:
for sub_cls in plugin_base.generate_sub_tests(