Fixed #35870 -- Made blank choice label in forms more accessible.

Added new constant django.db.models.fields.BLANK_CHOICE_LABEL for
an accessible and translatable blank choice label in forms.
Deprecated django.db.models.fields.BLANK_CHOICE_DASH constant.
Added the immediately deprecated transitional setting
USE_BLANK_CHOICE_DASH.

Co-Authored-By: Marijke Luttekes <mail@marijkeluttekes.dev>

1 files changed, 4 insertions, 1 deletions

diff --git a/tests/model_fields/test_booleanfield.py b/tests/model_fields/test_booleanfield.py
index 30eb009eb7..d0ed6e86cc 100644
--- a/tests/model_fields/test_booleanfield.py
+++ b/tests/model_fields/test_booleanfield.py
@@ -1,6 +1,7 @@
 from django import forms
 from django.core.exceptions import ValidationError
 from django.db import IntegrityError, models, transaction
+from django.db.models.utils import get_blank_choice_label
 from django.test import SimpleTestCase, TestCase
 
 from .models import BooleanModel, FksToBooleans, NullBooleanModel
@@ -48,7 +49,9 @@ class BooleanFieldTests(TestCase):
         """
         choices = [(1, "Si"), (2, "No")]
         f = models.BooleanField(choices=choices)
-        self.assertEqual(f.formfield().choices, [("", "---------")] + choices)
+        self.assertEqual(
+            f.formfield().choices, [("", get_blank_choice_label())] + choices
+        )
 
     def test_nullbooleanfield_formfield(self):
         f = models.BooleanField(null=True)