old_contents: # -*- coding: utf-8 -*-
  
  from openerp.tests import common
  from openerp import _
  
  
  class TestDocumentPageShowDiff(common.TransactionCase):
      """document_page_show_diff test class."""
  
      def test_show_demo_page1_diff(self):
          """Show test page history difference."""
          page = self.env.ref('document_page.demo_page1')
  
          show_diff_object = self.env['wizard.document.page.history.show_diff']
  
          history_document = self.env['document.page.history']
          history_pages = history_document.search([('page_id', '=', page.id)])
  
          self.assertEqual(len([i.id for i in history_pages]), 2)
  
          self.assertTrue(show_diff_object.with_context(
                  active_ids=[i.id for i in history_pages]
              ).get_diff())
  
          page.content = 'Test content updated'
  
          history_pages = history_document.search([('page_id', '=', page.id)])
  
          self.assertEqual(len([i.id for i in history_pages]), 1)
  
          with self.assertRaises(Exception) as context:
              show_diff_object.with_context(
                      active_ids=[i.id for i in history_pages]
                  ).get_diff()
  
          self.assertTrue(_("You need to select minimum one or maximum two history revisions!") in context.exception)
  
new_contents: # -*- coding: utf-8 -*-
  
  from openerp.tests import common
  from openerp import _
  
  
  class TestDocumentPageShowDiff(common.TransactionCase):
      """document_page_show_diff test class."""
  
      def test_show_demo_page1_diff(self):
          """Show test page history difference."""
          page = self.env.ref('document_page.demo_page1')
  
          show_diff_object = self.env['wizard.document.page.history.show_diff']
  
          history_document = self.env['document.page.history']
          history_pages = history_document.search([('page_id', '=', page.id)])
  
          self.assertTrue(show_diff_object.with_context(
                  active_ids=[i.id for i in history_pages]
              ).get_diff())
  
          page.content = 'Test content updated'
  
          history_pages = history_document.search([('page_id', '=', page.id)])
  
          with self.assertRaises(Exception) as context:
              show_diff_object.with_context(
                      active_ids=[i.id for i in history_pages]
                  ).get_diff()
  
          self.assertTrue(_("You need to select minimum one or maximum two history revisions!") in context.exception)
  
subject: test code coverage progress