Fixed #13895 -- Refactored aggregation_regress doctests. Thanks to Alex Gaynor for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@13614 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/test/__init__.py

@@ -4,3 +4,4 @@ Django Unit Test and Doctest framework.
 
 from django.test.client import Client
 from django.test.testcases import TestCase, TransactionTestCase
+from django.test.utils import Approximate

django/test/utils.py

@@ -1,4 +1,6 @@
-import sys, time, os
+import sys
+import time
+import os
 from django.conf import settings
 from django.core import mail
 from django.core.mail.backends import locmem
@@ -6,6 +8,21 @@ from django.test import signals
 from django.template import Template
 from django.utils.translation import deactivate
 
+
+class Approximate(object):
+    def __init__(self, val, places=7):
+        self.val = val
+        self.places = places
+
+    def __repr__(self):
+        return repr(self.val)
+
+    def __eq__(self, other):
+        if self.val == other:
+            return True
+        return round(abs(self.val-other), self.places) == 0
+
+
 class ContextList(list):
     """A wrapper that provides direct key access to context items contained
     in a list of context objects.