diff --git a/README.rst b/README.rst
index 833dcbe..7378ed2 100644
--- a/README.rst
+++ b/README.rst
@@ -37,6 +37,10 @@ key you want to turn dynamic into the ``CONSTANCE_CONFIG`` section, like this::
         'MY_SETTINGS_KEY': (42, 'the answer to everything'),
     }
 
+Here, ``42`` is the default value for the key MY_SETTINGS_KEY if it is not
+found in Redis. The other member of the tuple is a help text the admin
+will show.
+
 Usage
 =====
 
diff --git a/constance/tests/redis_mockup.py b/constance/tests/redis_mockup.py
new file mode 100644
index 0000000..0af0017
--- /dev/null
+++ b/constance/tests/redis_mockup.py
@@ -0,0 +1,5 @@
+class Connection(dict):
+    def set(self, key, value):
+        self[key] = value
+
+    
diff --git a/constance/tests/runtests.py b/constance/tests/runtests.py
new file mode 100644
index 0000000..7a302fc
--- /dev/null
+++ b/constance/tests/runtests.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+
+"""Borrowed from Carl Meyer's django-adminfiles."""
+
+import os, sys
+
+parent = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+sys.path.insert(0, parent)
+
+os.environ['DJANGO_SETTINGS_MODULE'] = 'tests.test_settings'
+
+from django.test.simple import run_tests
+
+def runtests():
+    failures = run_tests(['tests'], verbosity=1, interactive=True)
+    sys.exit(failures)
+
+if __name__ == '__main__':
+    runtests()
diff --git a/constance/tests/test_config.py b/constance/tests/test_config.py
index c7243a0..43f79e0 100644
--- a/constance/tests/test_config.py
+++ b/constance/tests/test_config.py
@@ -7,14 +7,6 @@ from constance import config
 
 class TestStorage(TestCase):
 
-    def setUp(self):
-        self.old_config = getattr(settings, 'CONSTANCE_CONFIG', None)
-        settings.CONSTANCE_CONFIG = {
-            'INT_VALUE': (1, 'some int'),
-            'BOOL_VALUE': (True, 'true or false'),
-            'STRING_VALUE': ('Hello world', 'greetings'),
-        }
-
     def test_store(self):
         # read defaults
         self.assertEquals(config.INT_VALUE, 1)
@@ -27,7 +19,3 @@ class TestStorage(TestCase):
         self.assertEquals(config.INT_VALUE, 100)
         self.assertEquals(config.BOOL_VALUE, False)
         self.assertEquals(config.STRING_VALUE, 'Hello world')
-
-    def tearDown(self):
-        if self.old_config:
-            settings.CONSTANCE_CONFIG = self.old_config
diff --git a/constance/tests/test_settings.py b/constance/tests/test_settings.py
new file mode 100644
index 0000000..07402b0
--- /dev/null
+++ b/constance/tests/test_settings.py
@@ -0,0 +1,7 @@
+CONSTANCE_CONFIG = {
+    'INT_VALUE': (1, 'some int'),
+    'BOOL_VALUE': (True, 'true or false'),
+    'STRING_VALUE': ('Hello world', 'greetings'),
+}
+
+CONSTANCE_CONNECTION_CLASS = 'redis_mockup.Connection'