[1.2.X] Corrected some backporting errors in the template tests.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14496 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/templates/context.py

@@ -1,6 +1,7 @@
 # coding: utf-8
+from unittest import TestCase
+
 from django.template import Context
-from django.utils.unittest import TestCase
 
 
 class ContextTests(TestCase):

tests/regressiontests/templates/custom.py

@@ -1,5 +1,6 @@
+from unittest import TestCase
+
 from django import template
-from django.utils.unittest import TestCase
 
 
 class CustomTests(TestCase):

tests/regressiontests/templates/parser.py

@@ -1,9 +1,10 @@
 """
 Testing some internals of the template processing. These are *not* examples to be copied in user code.
 """
+from unittest import TestCase
+
 from django.template import (TokenParser, FilterExpression, Parser, Variable,
     TemplateSyntaxError)
-from django.utils.unittest import TestCase
 
 
 class ParserTests(TestCase):

tests/regressiontests/templates/unicode.py

@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
+from unittest import TestCase
+
 from django.template import Template, TemplateEncodingError, Context
 from django.utils.safestring import SafeData
-from django.utils.unittest import TestCase
 
 
 class UnicodeTests(TestCase):
@@ -25,5 +26,5 @@ class UnicodeTests(TestCase):
         # they all render the same (and are returned as unicode objects and
         # "safe" objects as well, for auto-escaping purposes).
         self.assertEqual(t1.render(c3), t2.render(c3))
-        self.assertIsInstance(t1.render(c3), unicode)
-        self.assertIsInstance(t1.render(c3), SafeData)
+        self.assertTrue(isinstance(t1.render(c3), unicode))
+        self.assertTrue(isinstance(t1.render(c3), SafeData))