new_contents: import pycron
  
  
  def test_parse_arg():
      assert pycron._parse_arg('1/5', 0) is False
      assert pycron._parse_arg('asd-dsa', 0) is False
  
  
  def test_no_dt():
      assert pycron.is_now('* * * * *')
  
subject: Add couple of random tests, just to achieve 100% test coverage \o/.