old_contents: SECRET_KEY = "lorem ipsum"
  
  INSTALLED_APPS = (
      'tango_shared',
  )
  
new_contents: SECRET_KEY = "lorem ipsum"
  
  INSTALLED_APPS = (
      'tango_shared',
  )
  
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.sqlite3',
          'NAME': ':memory:',
      }
  }
  
  SITE_ID = 1
  
subject: Add missing test settings (in-memory sqlite3 db + SITE_ID)