1 files changed, 13 insertions, 1 deletions
diff --git a/lib/sqlalchemy/testing/config.py b/lib/sqlalchemy/testing/config.py
index 6c5ebd3dd..855918365 100644
--- a/lib/sqlalchemy/testing/config.py
+++ b/lib/sqlalchemy/testing/config.py
@@ -10,6 +10,7 @@
 from __future__ import annotations
 
 import collections
+import inspect
 import typing
 from typing import Any
 from typing import Callable
@@ -185,7 +186,7 @@ class Variation:
         return [typ(casename, argname, case_names) for casename in case_names]
 
 
-def variation(argname, cases):
+def variation(argname_or_fn, cases=None):
     """a helper around testing.combinations that provides a single namespace
     that can be used as a switch.
 
@@ -221,6 +222,17 @@ def variation(argname, cases):
 
     """
 
+    if inspect.isfunction(argname_or_fn):
+        argname = argname_or_fn.__name__
+        cases = argname_or_fn(None)
+
+        @variation_fixture(argname, cases)
+        def go(self, request):
+            yield request.param
+
+        return go
+    else:
+        argname = argname_or_fn
     cases_plus_limitations = [
         entry
         if (isinstance(entry, tuple) and len(entry) == 2)