new_contents: from hamcrest import assert_that, is_
  import pytest
  
  from pyhttp.cli import parse_args
  
  
  def describe_parse_args():
      def it_returns_parsed_arguments():
          args = parse_args(['-c', '100', 'http://example.com'])
  
          assert_that(args.concurrency, is_(100))
          assert_that(args.url, is_('http://example.com'))
  
subject: Add cli arguments parser tests