old_contents: from subprocess import call
  
  from .command import Command
  from .utils import sample_path
  
  
  class Test(Command):
  
      def run(self, package=None):
          if not package:
              self.abort('ABORT: missing PACKAGE argument')
          call(['pip install -i https://testpypi.python.org/pypi ' + package], shell=True)
  
new_contents: from subprocess import call
  
  from .command import Command
  from .utils import sample_path
  
  
  class Test(Command):
  
      def run(self, *args):
          if not args:
              self.abort('ABORT: missing PACKAGE argument')
          args = ' '.join(args)
          call(['pip install -i https://testpypi.python.org/pypi ' + args], shell=True)
  
subject: Add support for multiple arguments in the test command