Fixed #36808 -- Required name argument in UniqueConstraint signature.

By trading ValueError for TypeError for omitted name arguments,
we gain a little clarity.

AUTHORS

@@ -551,6 +551,7 @@ answer newbie questions, and generally made Django that much better:
     Jonas Lundberg <jonas.lundberg@gmail.com>
     Jonathan Davis <jonathandavis47780@gmail.com>
     Jonatas C. D. <jonatas.cd@gmail.com>
+    Jonathan Biemond <jonathan.biemond@gmail.com>
     Jonathan Buchanan <jonathan.buchanan@gmail.com>
     Jonathan Daugherty (cygnus) <http://www.cprogrammer.org/>
     Jonathan Feignberg <jdf@pobox.com>

django/db/models/constraints.py

@@ -265,7 +265,7 @@ class UniqueConstraint(BaseConstraint):
         self,
         *expressions,
         fields=(),
-        name=None,
+        name,
         condition=None,
         deferrable=None,
         include=None,

docs/ref/models/constraints.txt

@@ -130,7 +130,7 @@ ensures the age field is never less than 18.
 ``UniqueConstraint``
 ====================
 
-.. class:: UniqueConstraint(*expressions, fields=(), name=None, condition=None, deferrable=None, include=None, opclasses=(), nulls_distinct=None, violation_error_code=None, violation_error_message=None)
+.. class:: UniqueConstraint(*expressions, fields=(), name, condition=None, deferrable=None, include=None, opclasses=(), nulls_distinct=None, violation_error_code=None, violation_error_message=None)
 
     Creates a unique constraint in the database.
 

tests/constraints/tests.py

@@ -1462,7 +1462,7 @@ class UniqueConstraintTests(TestCase):
     def test_requires_name(self):
         msg = "A unique constraint must be named."
         with self.assertRaisesMessage(ValueError, msg):
-            models.UniqueConstraint(fields=["field"])
+            models.UniqueConstraint(fields=["field"], name="")
 
     def test_database_default(self):
         models.UniqueConstraint(