Use migrations in the custom user model test

tests/test_fixtures.py

@@ -261,5 +261,52 @@ def test_custom_user_model(admin_client):
             resp = admin_client.get('/admin-required/')
             assert force_text(resp.content) == 'You are an admin'
         """)
+
+    django_testdir.create_app_file('', 'migrations/__init__.py')
+    django_testdir.create_app_file("""
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+import django.utils.timezone
+import django.core.validators
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('auth', '0005_alter_user_last_login_null'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='MyCustomUser',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('password', models.CharField(max_length=128, verbose_name='password')),
+                ('last_login', models.DateTimeField(null=True, verbose_name='last login', blank=True)),
+                ('is_superuser', models.BooleanField(default=False, help_text='Designates that this user has all permissions without explicitly assigning them.', verbose_name='superuser status')),
+                ('username', models.CharField(error_messages={'unique': 'A user with that username already exists.'}, max_length=30, validators=[django.core.validators.RegexValidator('^[\\w.@+-]+$', 'Enter a valid username. This value may contain only letters, numbers and @/./+/-/_ characters.', 'invalid')], help_text='Required. 30 characters or fewer. Letters, digits and @/./+/-/_ only.', unique=True, verbose_name='username')),
+                ('first_name', models.CharField(max_length=30, verbose_name='first name', blank=True)),
+                ('last_name', models.CharField(max_length=30, verbose_name='last name', blank=True)),
+                ('email', models.EmailField(max_length=254, verbose_name='email address', blank=True)),
+                ('is_staff', models.BooleanField(default=False, help_text='Designates whether the user can log into this admin site.', verbose_name='staff status')),
+                ('is_active', models.BooleanField(default=True, help_text='Designates whether this user should be treated as active. Unselect this instead of deleting accounts.', verbose_name='active')),
+                ('date_joined', models.DateTimeField(default=django.utils.timezone.now, verbose_name='date joined')),
+                ('identifier', models.CharField(unique=True, max_length=100)),
+                ('groups', models.ManyToManyField(related_query_name='user', related_name='user_set', to='auth.Group', blank=True, help_text='The groups this user belongs to. A user will get all permissions granted to each of their groups.', verbose_name='groups')),
+                ('user_permissions', models.ManyToManyField(related_query_name='user', related_name='user_set', to='auth.Permission', blank=True, help_text='Specific permissions for this user.', verbose_name='user permissions')),
+            ],
+            options={
+                'abstract': False,
+                'verbose_name': 'user',
+                'verbose_name_plural': 'users',
+            },
+            bases=None,
+            managers=None,
+        ),
+    ]
+    """, 'migrations/0001_initial.py')  # noqa
+
     result = django_testdir.runpytest('-s')
     result.stdout.fnmatch_lines(['*1 passed*'])