diff --git a/docs/contributing.txt b/docs/contributing.txt
index 3d101c3241..7ecda7425c 100644
--- a/docs/contributing.txt
+++ b/docs/contributing.txt
@@ -247,18 +247,23 @@ Django tarball. It's our policy to make sure all tests pass at all times.
 
 The tests cover:
 
-    * Models and the database API (``tests/testapp/models``).
-    * The cache system (``tests/otherthests/cache.py``).
-    * The ``django.utils.dateformat`` module (``tests/othertests/dateformat.py``).
-    * Database typecasts (``tests/othertests/db_typecasts.py``).
-    * The template system (``tests/othertests/templates.py`` and
-      ``tests/othertests/defaultfilters.py``).
-    * ``QueryDict`` objects (``tests/othertests/httpwrappers.py``).
-    * Markup template tags (``tests/othertests/markup.py``).
-    * The ``django.utils.timesince`` module (``tests/othertests/timesince.py``).
+    * Models and the database API (``tests/modeltests/``).
+    * The cache system (``tests/regressiontests/cache.py``).
+    * The ``django.utils.dateformat`` module (``tests/regressiontests/dateformat/``).
+    * Database typecasts (``tests/regressiontests/db_typecasts/``).
+    * The template system (``tests/regressiontests/templates/`` and
+      ``tests/regressiontests/defaultfilters/``).
+    * ``QueryDict`` objects (``tests/regressiontests/httpwrappers/``).
+    * Markup template tags (``tests/regressiontests/markup/``).
 
 We appreciate any and all contributions to the test suite!
 
+The Django tests all use the testing infrastructure that ships with Django for
+testing applications. See `Testing Django Applications`_ for an explanation of
+how to write new tests.
+
+.. _Testing Django Applications: http://www.djangoproject.com/documentation/testing/
+
 Running the unit tests
 ----------------------
 
@@ -268,10 +273,14 @@ To run the tests, ``cd`` to the ``tests/`` directory and type::
 
 Yes, the unit tests need a settings module, but only for database connection
 info -- the ``DATABASE_ENGINE``, ``DATABASE_USER`` and ``DATABASE_PASSWORD``.
+You will also need a ``ROOT_URLCONF`` setting (it's value is ignored; it just
+needs to be present) and a ``SITE_ID`` setting (any integer value will do) in
+order for all the tests to pass.
 
-The unit tests will not touch your database; they create a new database, called
-``django_test_db``, which is deleted when the tests are finished. This means
-your user account needs permission to execute ``CREATE DATABASE``.
+The unit tests will not touch your existing databases; they create a new
+database, called ``django_test_db``, which is deleted when the tests are
+finished. This means your user account needs permission to execute ``CREATE
+DATABASE``.
 
 Requesting features
 ===================