text: #!/usr/bin/env python
  
  import sys
  import os
  import shutil
  import warnings
  
  from django.core.management import execute_from_command_line
  
  
  os.environ['DJANGO_SETTINGS_MODULE'] = 'wagtail.tests.settings'
  
  
  def runtests():
      # Don't ignore DeprecationWarnings
      warnings.simplefilter('default', DeprecationWarning)
      warnings.simplefilter('default', PendingDeprecationWarning)
  
      args = sys.argv[1:]
  
      if '--postgres' in args:
          os.environ['DATABASE_ENGINE'] = 'django.db.backends.postgresql_psycopg2'
          args.remove('--postgres')
  
      if '--elasticsearch' in args:
          os.environ.setdefault('ELASTICSEARCH_URL', 'http://localhost:9200')
          args.remove('--elasticsearch')
  
      argv = sys.argv[:1] + ['test'] + args
      try:
          execute_from_command_line(argv)
      finally:
          from wagtail.tests.settings import STATIC_ROOT, MEDIA_ROOT
          shutil.rmtree(STATIC_ROOT, ignore_errors=True)
          shutil.rmtree(MEDIA_ROOT, ignore_errors=True)
  
  
  if __name__ == '__main__':
      runtests()
  