Run tests using postgresql to reproduce a crash

.travis.yml

@@ -1,5 +1,7 @@
 language: python
 python: 3.5
+services:
+  - postgresql
 env:
   - TOX_ENV=py27-17
   - TOX_ENV=py27-18
@@ -24,6 +26,8 @@ matrix:
     - env: TOX_ENV=py34-master
     - env: TOX_ENV=py35-master
     - env: TOX_ENV=py36-master
+before_script:
+  - psql -c 'create database djadmininterface;' -U postgres
 install:
   - pip install tox
 script:

tests/settings.py

@@ -41,8 +41,12 @@ TEMPLATES = [{
 
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
+        'ENGINE': 'django.db.backends.postgresql_psycopg2',
+        'NAME': 'djadmininterface',
+        'USER': 'postgres',
+        'PASSWORD': 'postgres',
+        'HOST': '',
+        'PORT': ''
     }
 }
 

tox.ini

@@ -13,6 +13,7 @@ deps =
     110: Django >= 1.10, < 1.11
     111: Django >= 1.11, < 1.12
     master: https://github.com/django/django/archive/master.tar.gz
+    psycopg2
     coverage
     codecov
 commands =