old_contents: # -*- coding: utf-8 -*-
  
  import unittest
  
  import stencil
  
  from stencil import Token
  
  
  class ModuleTestCase(unittest.TestCase):
      """Test cases for the stencil module."""
  
      @staticmethod
      def test_tokenise():
          """Test stencil.tokenise() function."""
  
          it_token = stencil.tokenise('abc {{ x }} xyz')
  
          token = next(it_token)
          assert isinstance(token, Token)
          assert token.type == 'text'
          assert token.content == 'abc '
  
          token = next(it_token)
          assert isinstance(token, Token)
          assert token.type == 'var'
          assert token.content == 'x'
  
          token = next(it_token)
          assert isinstance(token, Token)
          assert token.type == 'text'
          assert token.content == ' xyz'
  
  
  class ContextTestCase(unittest.TestCase):
  
      def test_push(self):
          ctx = stencil.Context({'a': 1})
          self.assertEqual(ctx['a'], 1)
          self.assertIsNone(ctx['None'])
          with ctx:
              ctx.update({'a': 2})
              self.assertEqual(ctx['a'], 2)
          self.assertEqual(ctx['a'], 1)
  
new_contents: # -*- coding: utf-8 -*-
  
  import unittest
  
  import stencil
  
  from stencil import Token
  
  
  class ModuleTestCase(unittest.TestCase):
      """Test cases for the stencil module."""
  
      @staticmethod
      def test_tokenise():
          """Test stencil.tokenise() function."""
  
          it_token = stencil.tokenise('abc {{ x }} xyz')
  
          token = next(it_token)
          assert isinstance(token, Token)
          assert token.type == 'text'
          assert token.content == 'abc '
  
          token = next(it_token)
          assert isinstance(token, Token)
          assert token.type == 'var'
          assert token.content == 'x'
  
          token = next(it_token)
          assert isinstance(token, Token)
          assert token.type == 'text'
          assert token.content == ' xyz'
  
  
  class ContextTestCase(unittest.TestCase):
  
      def test_push(self):
          ctx = stencil.Context({'a': 1})
          self.assertEqual(ctx['a'], 1)
          self.assertIsNone(ctx['None'])
          with ctx.push({'a': 2}):
              self.assertEqual(ctx['a'], 2)
          self.assertEqual(ctx['a'], 1)
  
subject: Update tests