Merge pull request #12 from bradmontgomery/docs

Added instructions to run the test suite

README.rst

@@ -10,7 +10,7 @@ Requirements
 * PostgreSQL
 * psycopg2
 * Django >= 1.2
- 
+
 The ARRAY db type is PostgreSQL specific, so these model fields currently
 work only on PostgreSQL with psycopg2.  A ``FieldError`` will be raised if the
 field is used with another database.
@@ -42,15 +42,15 @@ Custom Fields
 To define a new array field for a base field type ``FooField``::
 
     import dbarray
-    
+
     class FooArrayField(dbarray.ArrayFieldBase, FooField):
         __metaclass__ = dbarray.ArrayFieldMetaclass
-        
+
 This may or may not work depending on a few factors.  You might, for example, need
 to override the db_type method to make it put the ``[]`` in the right spot in the column
 type used in generated SQL.
 
-Another issue that may arise when performing lookups with array fields 
+Another issue that may arise when performing lookups with array fields
 is that PostgreSQL may get the query parameter as a data type
 that isn't compatible with the type of the db column (for example text[]
 instead of varchar[]).  Then you will get an error like the following::
@@ -67,6 +67,22 @@ to the SQL query.
 Look in the source code for more examples of how to handle issues with new
 ArrayField types.
 
+Running the tests
+=================
+
+Versions of Django prior to 1.6 require
+`django-discover-runner <https://pypi.python.org/pypi/django-discover-runner>`_.
+Install it with::
+
+    pip install -U django-discover-runner
+
+The default tests also require a Postgres database named ``dbarray`` running on
+localhost. See the test configuration in dbarray/tests/run.py.
+
+You can run the test suite with::
+
+    python dbarray/tests/run.py
+
 
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