add failing test for empty default_branch

Signed-off-by: Zach Hammer <zhammer@seatgeek.com>

plugins/catalog-backend/src/ingestion/processors/GitLabDiscoveryProcessor.test.ts

@@ -184,6 +184,13 @@ describe('GitlabDiscoveryProcessor', () => {
                   last_activity_at: '2021-08-05T11:03:05.774Z',
                   web_url: 'https://gitlab.fake/3',
                 },
+                {
+                  id: 4,
+                  archived: false,
+                  default_branch: undefined, // MISSING DEFAULT BRANCH
+                  last_activity_at: '2021-08-05T11:03:05.774Z',
+                  web_url: 'https://gitlab.fake/4',
+                },
               ],
             };
           default:

plugins/catalog-backend/src/ingestion/processors/gitlab/types.ts

@@ -16,7 +16,7 @@
 
 export type GitLabProject = {
   id: number;
-  default_branch: string;
+  default_branch?: string;
   archived: boolean;
   last_activity_at: string;
   web_url: string;