use only postgres as database for testing

eshop/eshop_project/settings/base.py

@@ -127,10 +127,6 @@ MPTT_ADMIN_LEVEL_INDENT = 20
 # https://docs.djangoproject.com/en/2.0/ref/settings/#databases
 
 DATABASES = {
-    'extra': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': os.path.join(PROJECT_DIR, 'eshop.sqlite.db')
-    },
     'default': {
         'ENGINE': env.str('DB_ENGINE'),
         'NAME': env.str('DB_NAME'),

eshop/products/tests/test_models.py

@@ -1,5 +1,5 @@
 from django.test import TestCase
-from .models import Manufacturer, STATUS_DEFAULT
+from products.models import Manufacturer, STATUS_DEFAULT
 
 
 class ManufactureTestCase(TestCase):