Convert much of the regression tests to use absolute imports. There's still work to be done though.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16976 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/bug8245/tests.py

@@ -1,3 +1,5 @@
+from __future__ import with_statement
+
 from django.contrib import admin
 from django.utils.unittest import TestCase
 
@@ -9,20 +11,12 @@ class Bug8245Test(TestCase):
     """
     def test_bug_8245(self):
         # The first time autodiscover is called, we should get our real error.
-        try:
+        with self.assertRaises(Exception) as cm:
             admin.autodiscover()
-        except Exception, e:
-            self.assertEqual(str(e), "Bad admin module")
-        else:
-            self.fail(
-                'autodiscover should have raised a "Bad admin module" error.')
+        self.assertEqual(str(cm.exception), "Bad admin module")
 
         # Calling autodiscover again should raise the very same error it did
         # the first time, not an AlreadyRegistered error.
-        try:
+        with self.assertRaises(Exception) as cm:
             admin.autodiscover()
-        except Exception, e:
-            self.assertEqual(str(e), "Bad admin module")
-        else:
-            self.fail(
-                'autodiscover should have raised a "Bad admin module" error.')
+        self.assertEqual(str(cm.exception), "Bad admin module")