[1.2.X] Fixed #717 - If-Modified-Since handling should compare dates according to RFC 2616

Thanks to Maniac for the report, julienb for the initial patch, and
especially to aaugustin for the final patch and tests.

Backport of [15696] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15697 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 30 insertions, 4 deletions

diff --git a/tests/regressiontests/conditional_processing/models.py b/tests/regressiontests/conditional_processing/models.py
index b291aed337..129d11b07f 100644
--- a/tests/regressiontests/conditional_processing/models.py
+++ b/tests/regressiontests/conditional_processing/models.py
@@ -1,17 +1,20 @@
 # -*- coding:utf-8 -*-
-from datetime import datetime, timedelta
-from calendar import timegm
+from datetime import datetime
 
 from django.test import TestCase
-from django.utils.http import parse_etags, quote_etag
+from django.utils import unittest
+from django.utils.http import parse_etags, quote_etag, parse_http_date
 
 FULL_RESPONSE = 'Test conditional get response'
 LAST_MODIFIED = datetime(2007, 10, 21, 23, 21, 47)
 LAST_MODIFIED_STR = 'Sun, 21 Oct 2007 23:21:47 GMT'
+LAST_MODIFIED_NEWER_STR = 'Mon, 18 Oct 2010 16:56:23 GMT'
+LAST_MODIFIED_INVALID_STR = 'Mon, 32 Oct 2010 16:56:23 GMT'
 EXPIRED_LAST_MODIFIED_STR = 'Sat, 20 Oct 2007 23:21:47 GMT'
 ETAG = 'b4246ffc4f62314ca13147c9d4f76974'
 EXPIRED_ETAG = '7fae4cd4b0f81e7d2914700043aa8ed6'
 
+
 class ConditionalGet(TestCase):
     def assertFullResponse(self, response, check_last_modified=True, check_etag=True):
         self.assertEquals(response.status_code, 200)
@@ -33,6 +36,12 @@ class ConditionalGet(TestCase):
         self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = LAST_MODIFIED_STR
         response = self.client.get('/condition/')
         self.assertNotModified(response)
+        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = LAST_MODIFIED_NEWER_STR
+        response = self.client.get('/condition/')
+        self.assertNotModified(response)
+        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = LAST_MODIFIED_INVALID_STR
+        response = self.client.get('/condition/')
+        self.assertFullResponse(response)
         self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = EXPIRED_LAST_MODIFIED_STR
         response = self.client.get('/condition/')
         self.assertFullResponse(response)
@@ -118,7 +127,7 @@ class ConditionalGet(TestCase):
         self.assertFullResponse(response, check_last_modified=False)
 
 
-class ETagProcesing(TestCase):
+class ETagProcessing(unittest.TestCase):
     def testParsing(self):
         etags = parse_etags(r'"", "etag", "e\"t\"ag", "e\\tag", W/"weak"')
         self.assertEquals(etags, ['', 'etag', 'e"t"ag', r'e\tag', 'weak'])
@@ -126,3 +135,20 @@ class ETagProcesing(TestCase):
     def testQuoting(self):
         quoted_etag = quote_etag(r'e\t"ag')
         self.assertEquals(quoted_etag, r'"e\\t\"ag"')
+
+
+class HttpDateProcessing(unittest.TestCase):
+    def testParsingRfc1123(self):
+        parsed = parse_http_date('Sun, 06 Nov 1994 08:49:37 GMT')
+        self.assertEqual(datetime.utcfromtimestamp(parsed),
+                         datetime(1994, 11, 06, 8, 49, 37))
+
+    def testParsingRfc850(self):
+        parsed = parse_http_date('Sunday, 06-Nov-94 08:49:37 GMT')
+        self.assertEqual(datetime.utcfromtimestamp(parsed),
+                         datetime(1994, 11, 06, 8, 49, 37))
+
+    def testParsingAsctime(self):
+        parsed = parse_http_date('Sun Nov  6 08:49:37 1994')
+        self.assertEqual(datetime.utcfromtimestamp(parsed),
+                         datetime(1994, 11, 06, 8, 49, 37))