[1.2.X] Reordered the shutdown process for tests so that all tests fo…

…rce a connection close. This is required to prevent some cross-test failures. Thanks to Florian Apolloner for the report and help tracking down the problem.

Backport of r14399 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15391 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/test/testcases.py

@@ -275,9 +275,20 @@ def _post_teardown(self):
         """ Performs any post-test things. This includes:
 
             * Putting back the original ROOT_URLCONF if it was changed.
+            * Force closing the connection, so that the next test gets
+              a clean cursor.
         """
         self._fixture_teardown()
         self._urlconf_teardown()
+        # Some DB cursors include SQL statements as part of cursor
+        # creation. If you have a test that does rollback, the effect
+        # of these statements is lost, which can effect the operation
+        # of tests (e.g., losing a timezone setting causing objects to
+        # be created with the wrong time).
+        # To make sure this doesn't happen, get a clean connection at the
+        # start of every test.
+        for connection in connections.all():
+            connection.close()
 
     def _fixture_teardown(self):
         pass
@@ -541,6 +552,3 @@ def _fixture_teardown(self):
         for db in databases:
             transaction.rollback(using=db)
             transaction.leave_transaction_management(using=db)
-
-        for connection in connections.all():
-            connection.close()