text: from __future__ import unicode_literals
  
  from reviewboard.diffviewer.parser import DiffParser
  from reviewboard.testing import TestCase
  
  
  class DiffParserTest(TestCase):
      """Unit tests for DiffParser."""
  
      def test_form_feed(self):
          """Testing DiffParser with a form feed in the file"""
          data = (
              b'--- README  123\n'
              b'+++ README  (new)\n'
              b'@@ -1,4 +1,6 @@\n'
              b' Line 1\n'
              b' Line 2\n'
              b'+\x0c\n'
              b'+Inserted line\n'
              b' Line 3\n'
              b' Line 4\n')
          files = DiffParser(data).parse()
  
          self.assertEqual(len(files), 1)
          self.assertEqual(files[0].insert_count, 2)
          self.assertEqual(files[0].delete_count, 0)
          self.assertEqual(files[0].data, data)
  
      def test_line_counts(self):
          """Testing DiffParser with insert/delete line counts"""
          diff = (
              b'+ This is some line before the change\n'
              b'- And another line\n'
              b'Index: foo\n'
              b'- One last.\n'
              b'--- README  123\n'
              b'+++ README  (new)\n'
              b'@@ -1,1 +1,1 @@\n'
              b'-blah blah\n'
              b'-blah\n'
              b'+blah!\n'
              b'-blah...\n'
              b'+blah?\n'
              b'-blah!\n'
              b'+blah?!\n')
          files = DiffParser(diff).parse()
  
          self.assertEqual(len(files), 1)
          self.assertEqual(files[0].insert_count, 3)
          self.assertEqual(files[0].delete_count, 4)
  