Index: models.py
===================================================================
--- models.py	(revision 6031)
+++ models.py	(working copy)
@@ -75,6 +75,21 @@
 # Dump the current contents of the database as a JSON fixture
 >>> management.call_command('dumpdata', 'fixtures', format='json')
 [{"pk": "3", "model": "fixtures.article", "fields": {"headline": "Time to reform copyright", "pub_date": "2006-06-16 13:00:00"}}, {"pk": "2", "model": "fixtures.article", "fields": {"headline": "Poker has no place on ESPN", "pub_date": "2006-06-16 12:00:00"}}, {"pk": "1", "model": "fixtures.article", "fields": {"headline": "Python program becomes self aware", "pub_date": "2006-06-16 11:00:00"}}]
+
+# redirect stderr for the next few tests...
+>>> import sys
+>>> savestderr = sys.stderr
+>>> sys.stderr = sys.stdout
+
+# Loading data of an unknown format should fail
+>>> management.call_command('loaddata', 'bad_fixture1.unkn', verbosity=0)
+Problem installing fixture 'bad_fixture1': unkn is not a known serialization format.
+
+# Loading a fixture file with invalid data
+>>> management.call_command('loaddata', 'bad_fixture2.xml', verbosity=0)
+Empty fixture file 'bad_fixture2' found. (File format may be invalid.)
+
+>>> sys.stderr = savestderr
 """}
 
 from django.test import TestCase