Fixed #24910 -- Added createsuperuser support for non-unique USERNAME_FIELDs

Clarified docs to say that a non-unique USERNAME_FIELD is permissable
as long as the custom auth backend can support it.

1 files changed, 13 insertions, 2 deletions

diff --git a/tests/auth_tests/models/invalid_models.py b/tests/auth_tests/models/invalid_models.py
index 46b4819fa4..eaaff2aa15 100644
--- a/tests/auth_tests/models/invalid_models.py
+++ b/tests/auth_tests/models/invalid_models.py
@@ -1,12 +1,23 @@
-from django.contrib.auth.models import AbstractBaseUser
+from django.contrib.auth.models import AbstractBaseUser, UserManager
 from django.db import models
 
 
 class CustomUserNonUniqueUsername(AbstractBaseUser):
-    "A user with a non-unique username"
+    """
+    A user with a non-unique username.
+
+    This model is not invalid if it is used with a custom authentication
+    backend which supports non-unique usernames.
+    """
     username = models.CharField(max_length=30)
+    email = models.EmailField(blank=True)
+    is_staff = models.BooleanField(default=False)
+    is_superuser = models.BooleanField(default=False)
 
     USERNAME_FIELD = 'username'
+    REQUIRED_FIELDS = ['email']
+
+    objects = UserManager()
 
     class Meta:
         app_label = 'auth'