Merge "rearchitect reflection for batched performance" into main

1 files changed, 9 insertions, 7 deletions

diff --git a/lib/sqlalchemy/testing/plugin/pytestplugin.py b/lib/sqlalchemy/testing/plugin/pytestplugin.py
index fa7d2ca19..cea07b305 100644
--- a/lib/sqlalchemy/testing/plugin/pytestplugin.py
+++ b/lib/sqlalchemy/testing/plugin/pytestplugin.py
@@ -741,13 +741,18 @@ class PytestFixtureFunctions(plugin_base.FixtureFunctions):
                 fn._sa_parametrize.append((argnames, pytest_params))
                 return fn
             else:
+                _fn_argnames = inspect.getfullargspec(fn).args[1:]
                 if argnames is None:
-                    _argnames = inspect.getfullargspec(fn).args[1:]
+                    _argnames = _fn_argnames
                 else:
                     _argnames = re.split(r", *", argnames)
 
                 if has_exclusions:
-                    _argnames += ["_exclusions"]
+                    existing_exl = sum(
+                        1 for n in _fn_argnames if n.startswith("_exclusions")
+                    )
+                    current_exclusion_name = f"_exclusions_{existing_exl}"
+                    _argnames += [current_exclusion_name]
 
                     @_pytest_fn_decorator
                     def check_exclusions(fn, *args, **kw):
@@ -755,13 +760,10 @@ class PytestFixtureFunctions(plugin_base.FixtureFunctions):
                         if _exclusions:
                             exlu = exclusions.compound().add(*_exclusions)
                             fn = exlu(fn)
-                        return fn(*args[0:-1], **kw)
-
-                    def process_metadata(spec):
-                        spec.args.append("_exclusions")
+                        return fn(*args[:-1], **kw)
 
                     fn = check_exclusions(
-                        fn, add_positional_parameters=("_exclusions",)
+                        fn, add_positional_parameters=(current_exclusion_name,)
                     )
 
                 return pytest.mark.parametrize(_argnames, pytest_params)(fn)