old_contents: """From http://stackoverflow.com/a/12260597/400691"""
  import sys
  
  from django.conf import settings
  
  
  settings.configure(
      DATABASES={
          'default': {
              'ENGINE': 'django.db.backends.postgresql_psycopg2',
              'NAME': 'dbarray',
              'HOST': 'localhost'
          }
      },
      INSTALLED_APPS=(
          'dbarray.tests',
          # 'django.contrib.auth',
          # 'django.contrib.contenttypes',
          # 'django.contrib.sessions',
          # 'django.contrib.admin',
      ),
  )
  try:
      from django.test.runner import DiscoverRunner
  except ImportError:
      # Fallback for django < 1.6
      from discover_runner import DiscoverRunner
  
  test_runner = DiscoverRunner(verbosity=1)
  failures = test_runner.run_tests(['dbarray'])
  if failures:
      sys.exit(1)
  
new_contents: """From http://stackoverflow.com/a/12260597/400691"""
  import sys
  
  from django.conf import settings
  
  
  settings.configure(
      DATABASES={
          'default': {
              'ENGINE': 'django.db.backends.postgresql_psycopg2',
              'NAME': 'dbarray',
              'HOST': 'localhost'
          }
      },
      INSTALLED_APPS=('dbarray.tests',),
  )
  
  try:
      from django.test.runner import DiscoverRunner
  except ImportError:
      # Fallback for django < 1.6
      from discover_runner import DiscoverRunner
  
  test_runner = DiscoverRunner(verbosity=1)
  failures = test_runner.run_tests(['dbarray'])
  if failures:
      sys.exit(1)
  
subject: Remove commented code [ci skip].