Fix the tests and the one bug that it highlighted.

config.py

@@ -33,7 +33,15 @@ class MailConfig(object):
   TESTING = False
 
 
-class SQLiteDB(object):
+class RealTransactions(object):
+  @staticmethod
+  def create_transaction(db):
+    return db.transaction()
+
+  DB_TRANSACTION_FACTORY = create_transaction
+
+
+class SQLiteDB(RealTransactions):
   DB_NAME = 'test/data/test.db'
   DB_CONNECTION_ARGS = {
     'threadlocals': True
@@ -41,13 +49,27 @@ class SQLiteDB(object):
   DB_DRIVER = SqliteDatabase
 
 
+class FakeTransaction(object):
+  def __enter__(self):
+    return self
+
+  def __exit__(self, exc_type, value, traceback):
+    pass
+
+
 class EphemeralDB(object):
   DB_NAME = ':memory:'
   DB_CONNECTION_ARGS = {}
   DB_DRIVER = SqliteDatabase
 
+  @staticmethod
+  def create_transaction(db):
+    return FakeTransaction()
 
-class RDSMySQL(object):
+  DB_TRANSACTION_FACTORY = create_transaction
+
+
+class RDSMySQL(RealTransactions):
   DB_NAME = 'quay'
   DB_CONNECTION_ARGS = {
     'host': 'fluxmonkeylogin.cb0vumcygprn.us-east-1.rds.amazonaws.com',