Fixed #25989 -- Corrected sitemap's Last-Modified header to use the latest lastmod of all sitemaps.

Previously, the lastmod of the last sitemap was always used.
All sitemaps are required to have a lastmod.

1 files changed, 32 insertions, 0 deletions

diff --git a/tests/sitemaps_tests/test_http.py b/tests/sitemaps_tests/test_http.py
index 399cd35ae6..38a79a03f2 100644
--- a/tests/sitemaps_tests/test_http.py
+++ b/tests/sitemaps_tests/test_http.py
@@ -110,6 +110,38 @@ class HTTPSitemapTests(SitemapTestsBase):
         response = self.client.get('/lastmod-mixed/sitemap.xml')
         self.assertFalse(response.has_header('Last-Modified'))
 
+    def test_sitemaps_lastmod_mixed_ascending_last_modified_missing(self):
+        """
+        The Last-Modified header is omitted when lastmod isn't found in all
+        sitemaps. Test sitemaps are sorted by lastmod in ascending order.
+        """
+        response = self.client.get('/lastmod-sitemaps/mixed-ascending.xml')
+        self.assertFalse(response.has_header('Last-Modified'))
+
+    def test_sitemaps_lastmod_mixed_descending_last_modified_missing(self):
+        """
+        The Last-Modified header is omitted when lastmod isn't found in all
+        sitemaps. Test sitemaps are sorted by lastmod in descending order.
+        """
+        response = self.client.get('/lastmod-sitemaps/mixed-descending.xml')
+        self.assertFalse(response.has_header('Last-Modified'))
+
+    def test_sitemaps_lastmod_ascending(self):
+        """
+        The Last-Modified header is set to the most recent sitemap lastmod.
+        Test sitemaps are sorted by lastmod in ascending order.
+        """
+        response = self.client.get('/lastmod-sitemaps/ascending.xml')
+        self.assertEqual(response['Last-Modified'], 'Sat, 20 Apr 2013 05:00:00 GMT')
+
+    def test_sitemaps_lastmod_descending(self):
+        """
+        The Last-Modified header is set to the most recent sitemap lastmod.
+        Test sitemaps are sorted by lastmod in descending order.
+        """
+        response = self.client.get('/lastmod-sitemaps/descending.xml')
+        self.assertEqual(response['Last-Modified'], 'Sat, 20 Apr 2013 05:00:00 GMT')
+
     @skipUnless(settings.USE_I18N, "Internationalization is not enabled")
     @override_settings(USE_L10N=True)
     def test_localized_priority(self):