create_xmodule was renamed to create_xblock, and mixed modulestore has create_xblock method.

Split modulestore throws duplicate errors if course locator is not unique.

lms/djangoapps/courseware/management/commands/tests/test_dump_course.py

@@ -8,6 +8,7 @@ import shutil
 from StringIO import StringIO
 import tarfile
 from tempfile import mkdtemp
+import factory
 
 from django.conf import settings
 from django.core.management import call_command
@@ -53,11 +54,10 @@ class CommandsTestBase(TestCase):
         """Load test courses and return list of ids"""
         store = modulestore()
 
-        # Add a course with a unicode name, if the modulestore
-        # supports adding modules.
-        if hasattr(store, 'create_xmodule'):
+        # Add a course with a unicode name.
+        unique_org = factory.Sequence(lambda n: u'ëḋẌ.%d' % n)
         CourseFactory.create(
-                org=u'ëḋẌ',
+            org=unique_org,
             course=u'śíḿṕĺé',
             display_name=u'2012_Fáĺĺ',
             modulestore=store