Refs #22654 -- Added additional tests and amended release note.

docs/releases/2.0.txt

@@ -163,10 +163,6 @@ Forms
   HTML attributes for the ``DateInput`` and ``TimeInput`` (or hidden)
   subwidgets.
 
-* :class:`~django.forms.FloatField` and :class:`~django.forms.DecimalField`
-  now handle :setting:`DECIMAL_SEPARATOR` and :setting:`THOUSAND_SEPARATOR`
-  correctly when :setting:`USE_L10N` is off.
-
 Generic Views
 ~~~~~~~~~~~~~
 
@@ -311,6 +307,18 @@ Miscellaneous
 * :class:`~django.views.generic.base.RedirectView` no longer silences
   ``NoReverseMatch`` if the ``pattern_name`` doesn't exist.
 
+* When :setting:`USE_L10N` is off, :class:`~django.forms.FloatField` and
+  :class:`~django.forms.DecimalField` now respect :setting:`DECIMAL_SEPARATOR`
+  and :setting:`THOUSAND_SEPARATOR` during validation. For example, with the
+  settings::
+
+     USE_L10N = False
+     USE_THOUSAND_SEPARATOR = True
+     DECIMAL_SEPARATOR = ','
+     THOUSAND_SEPARATOR = '.'
+
+  an input of ``"1.345"`` is now converted to ``1345`` instead of ``1.345``.
+
 .. _deprecated-features-2.0:
 
 Features deprecated in 2.0

tests/i18n/tests.py

@@ -874,6 +874,19 @@ class FormattingTests(SimpleTestCase):
                 # Suspicion that user entered dot as decimal separator (#22171)
                 self.assertEqual(sanitize_separators('10.10'), '10.10')
 
+        with self.settings(USE_L10N=False, DECIMAL_SEPARATOR=','):
+            self.assertEqual(sanitize_separators('1001,10'), '1001.10')
+            self.assertEqual(sanitize_separators('1001.10'), '1001.10')
+
+        with self.settings(
+            USE_L10N=False, DECIMAL_SEPARATOR=',', USE_THOUSAND_SEPARATOR=True,
+            THOUSAND_SEPARATOR='.'
+        ):
+            self.assertEqual(sanitize_separators('1.001,10'), '1001.10')
+            self.assertEqual(sanitize_separators('1001,10'), '1001.10')
+            self.assertEqual(sanitize_separators('1001.10'), '1001.10')
+            self.assertEqual(sanitize_separators('1,001.10'), '1.001.10')  # Invalid output
+
     def test_iter_format_modules(self):
         """
         Tests the iter_format_modules function.