Fix publishing of programs to marketing site

ECOM-6765

course_discovery/apps/course_metadata/publishers.py

@@ -117,7 +117,7 @@ class MarketingSitePublisher(object):
 
     def _get_node_data(self, program, user_id):
         return {
-            'type': str(program.type).lower(),
+            'type': str(program.type).lower().replace(' ', '_'),
             'title': program.title,
             'field_uuid': str(program.uuid),
             'uuid': str(program.uuid),
@@ -132,6 +132,7 @@ class MarketingSitePublisher(object):
         response = api_client.api_session.get(node_url)
         if response.status_code == 200:
             list_item = response.json().get('list')
+            if list_item:
                 return list_item[0]['nid']
 
     def _edit_node(self, api_client, node_id, node_data):

course_discovery/apps/course_metadata/tests/mixins.py

@@ -101,14 +101,14 @@ class MarketingSitePublisherTestMixin(MarketingSiteAPIClientTestMixin):
 
     def mock_node_retrieval(self, program_uuid, exists=True):
         data = {}
-        status = 404
-        if exists:
+        status = 200
         data = {
-                'list': [{
+            'list': []
+        }
+        if exists:
+            data['list'] = [{
                 'nid': self.node_id
             }]
-            }
-            status = 200
 
         responses.add(
             responses.GET,