Add instructions for running database tests

Author: millerdev

README.md

@@ -25,6 +25,20 @@ pip install django pytest-unmagic flake8
 
 pytest
 flake8 --config=setup.cfg
+
+# To run tests against postgres
+pip install psycopg2-binary
+psql -U username -h localhost -p 5432 -c 'create database django_cte;'
+export PG_DB_SETTINGS='{
+    "ENGINE":"django.db.backends.postgresql_psycopg2",
+    "NAME":"django_cte",
+    "USER":"username",
+    "PASSWORD":"password",
+    "HOST":"localhost",
+    "PORT":"5432"}'
+
+# WARNING pytest will delete the test_django_cte database if it exists!
+DB_SETTINGS="$PG_DB_SETTINGS" pytest
 ```
 
 All feature and bug contributions are expected to be covered by tests.

tests/django_setup.py

@@ -1,8 +1,6 @@
 from __future__ import absolute_import
 from __future__ import unicode_literals
 
-import sys
-
 from django.db import connection
 
 from .models import KeyPair, Region, Order
@@ -16,13 +14,7 @@ def init_db():
         return
     is_initialized = True
 
-    # replace sys.stdout for prompt to delete database
-    old_stdout = sys.stdout
-    sys.stdout = sys.__stdout__
-    try:
-        connection.creation.create_test_db(verbosity=0)
-    finally:
-        sys.stdout = old_stdout
+    connection.creation.create_test_db(verbosity=0, autoclobber=True)
 
     setup_data()