More elegantly patch tests for Python 3.13 docstring cleaning

Author: musicinmybrain

parameterized/test.py

@@ -385,6 +385,8 @@ def _assert_docstring(self, expected_docstring, rstrip=False):
         actual_docstring = test_method.__doc__
         if rstrip:
             actual_docstring = actual_docstring.rstrip()
+        if sys.version_info[:2] >= (3, 13):
+            expected_docstring = inspect.cleandoc(expected_docstring)
         assert_equal(actual_docstring, expected_docstring)
 
     @parameterized.expand([param("foo")],
@@ -408,16 +410,10 @@ def test_multiline_documentation(self, foo):
         """Documentation.
 
         More"""
-        if sys.version_info[:2] < (3, 13):
-            self._assert_docstring(
-                "Documentation [with foo=%r].\n\n"
-                "        More" %(foo, )
-            )
-        else:
-            self._assert_docstring(
-                "Documentation [with foo=%r].\n\n"
-                "More" %(foo, )
-            )
+        self._assert_docstring(
+            "Documentation [with foo=%r].\n\n"
+            "        More" %(foo, )
+        )
 
     @parameterized.expand([param("foo")])
     def test_unicode_docstring(self, foo):