Merged regressiontests and modeltests into the test root.

tests/mail/custombackend.py

@@ -0,0 +1,15 @@
+"""A custom backend for testing."""
+
+from django.core.mail.backends.base import BaseEmailBackend
+
+
+class EmailBackend(BaseEmailBackend):
+
+    def __init__(self, *args, **kwargs):
+        super(EmailBackend, self).__init__(*args, **kwargs)
+        self.test_outbox = []
+
+    def send_messages(self, email_messages):
+        # Messages are stored in a instance variable for testing.
+        self.test_outbox.extend(email_messages)
+        return len(email_messages)