Refs #33990 -- Removed SimpleTestCase.assertFormsetError() per deprecation timeline.

django/test/testcases.py

@@ -601,15 +601,6 @@ class SimpleTestCase(unittest.TestCase):
         errors = to_list(errors)
         self._assert_form_error(form, field, errors, msg_prefix, f"form {form!r}")
 
-    # RemovedInDjango51Warning.
-    def assertFormsetError(self, *args, **kw):
-        warnings.warn(
-            "assertFormsetError() is deprecated in favor of assertFormSetError().",
-            category=RemovedInDjango51Warning,
-            stacklevel=2,
-        )
-        return self.assertFormSetError(*args, **kw)
-
     def assertFormSetError(self, formset, form_index, field, errors, msg_prefix=""):
         """
         Similar to assertFormError() but for formsets.

docs/releases/5.1.txt

@@ -270,3 +270,5 @@ to remove usage of these features.
 
 * The ``map_width`` and ``map_height`` attributes of ``BaseGeometryWidget`` are
   removed.
+
+* The ``SimpleTestCase.assertFormsetError()`` method is removed.

docs/topics/testing/tools.txt

@@ -1681,11 +1681,6 @@ your test suite.
     ``field`` and ``errors`` have the same meaning as the parameters to
     ``assertFormError()``.
 
-    .. deprecated:: 4.2
-
-        The ``assertFormsetError()`` assertion method is deprecated. Use
-        ``assertFormSetError()`` instead.
-
 .. method:: SimpleTestCase.assertContains(response, text, count=None, status_code=200, msg_prefix='', html=False)
 
     Asserts that a :class:`response <django.http.HttpResponse>` produced the

tests/test_utils/tests.py

@@ -1425,15 +1425,6 @@ class AssertFormErrorTests(SimpleTestCase):
 
 
 class AssertFormSetErrorTests(SimpleTestCase):
-    def test_rename_assertformseterror_deprecation_warning(self):
-        msg = "assertFormsetError() is deprecated in favor of assertFormSetError()."
-        with self.assertRaisesMessage(RemovedInDjango51Warning, msg):
-            self.assertFormsetError()
-
-    @ignore_warnings(category=RemovedInDjango51Warning)
-    def test_deprecated_assertformseterror(self):
-        self.assertFormsetError(TestFormset.invalid(), 0, "field", "invalid value")
-
     def test_single_error(self):
         self.assertFormSetError(TestFormset.invalid(), 0, "field", "invalid value")