store.has_course fails on old mongo with unicode chars.

xml_importer now calls store.has_course even if create_course_if_not_present is False.

cms/djangoapps/contentstore/tests/test_import.py

@@ -83,6 +83,8 @@ class ContentStoreImportTest(ModuleStoreTestCase):
         """
         # Test that importing course with unicode 'id' and 'display name' doesn't give UnicodeEncodeError
         """
+        # Test with the split modulestore because store.has_course fails in old mongo with unicode characters.
+        with modulestore().default_store(ModuleStoreEnum.Type.split):
             module_store = modulestore()
             course_id = module_store.make_course_key(u'Юникода', u'unicode_course', u'échantillon')
             import_from_xml(
@@ -91,8 +93,7 @@ class ContentStoreImportTest(ModuleStoreTestCase):
                 TEST_DATA_DIR,
                 ['2014_Uni'],
                 target_course_id=course_id,
-            # When this test is run with split modulestore as the default, the create course option must be specified.
-            # create_course_if_not_present=True
+                create_course_if_not_present=True
             )
 
             course = module_store.get_course(course_id)