old_contents: import unittest
  from grabber import return_rss
  
  
  class TestGrabber(unittest.TestCase):
  
      def test_error_on_invalid_url(self):
          link = "http://example"
          self.assertRaises(Exception, return_rss, link)
  
      def test_error_on_url_without_feed(self):
          link = "http://example.com"
          self.assertRaises(Exception, return_rss, link)
  
      def test_wordpress(self):
          link = "http://techcrunch.com"
          self.assertEqual(return_rss(link), 'http://techcrunch.com/feed/')
  
      def test_blogger(self):
          link = "http://google.blogspot.com/"
          self.assertEqual(
              return_rss(link),
              'http://google.blogspot.com/feeds/posts/default?alt=rss'
          )
  
      def test_svtle(self):
          link = 'http://blog.svbtle.com/'
          self.assertEqual(
              return_rss(link),
              'http://blog.svbtle.com/feed'
          )
  
      def test_ghost(self):
          link = 'https://blog.ghost.org/'
          self.assertEqual(
              return_rss(link),
              'https://blog.ghost.org/rss/'
          )
  
      def test_medium(self):
          link = 'https://medium.com/stories-from-nlocate'
          self.assertEqual(
              return_rss(link),
              'https://medium.com/feed/stories-from-nlocate'
          )
  
      def test_tumblr(self):
          link = "http://staff.tumblr.com/"
          self.assertEqual(
              return_rss(link),
              'http://staff.tumblr.com/rss'
          )
  
  if __name__ == '__main__':
      unittest.main()
  
new_contents: import unittest
  from grabber import return_rss
  
  
  class TestGrabber(unittest.TestCase):
  
      def test_error_on_invalid_url(self):
          link = "http://example"
          self.assertRaises(Exception, return_rss, link)
  
      def test_error_on_url_without_feed(self):
          link = "http://example.com"
          self.assertRaises(Exception, return_rss, link)
  
      def test_wordpress(self):
          link = "https://techcrunch.com"
          self.assertEqual(return_rss(link), 'https://techcrunch.com/feed/')
  
      def test_blogger(self):
          link = "https://google.blogspot.com/"
          self.assertEqual(
              return_rss(link),
              'https://google.blogspot.com/feeds/posts/default?alt=rss'
          )
  
      def test_svtle(self):
          link = 'http://blog.svbtle.com/'
          self.assertEqual(
              return_rss(link),
              'http://blog.svbtle.com/feed'
          )
  
      def test_ghost(self):
          link = 'https://blog.ghost.org/'
          self.assertEqual(
              return_rss(link),
              'https://blog.ghost.org/rss/'
          )
  
      def test_medium(self):
          link = 'https://medium.com/stories-from-nlocate'
          self.assertEqual(
              return_rss(link),
              'https://medium.com/feed/stories-from-nlocate'
          )
  
      def test_tumblr(self):
          link = "https://staff.tumblr.com/"
          self.assertEqual(
              return_rss(link),
              'https://staff.tumblr.com/rss'
          )
  
  if __name__ == '__main__':
      unittest.main()
  
subject: Fix tests