Add mocked functions

Author: bidoubiwa

server/__tests__/utils/fakes.js

@@ -55,8 +55,13 @@ function createFakeStrapi({
     return [{ id: 1 }]
   })
 
+  const fakeFindOne = jest.fn(() => {
+    return [{ id: 1 }]
+  })
+
   const fakeEntityService = {
     findMany: fakeFindMany,
+    findOne: fakeFindOne,
   }
 
   const fakeStrapi = {

server/services/content-types/content-types.js

@@ -145,7 +145,7 @@ module.exports = ({ strapi }) => ({
       strapi.log.error(`Could not find entry with id ${id} in ${contentType}`)
     }
 
-    return entry
+    return entry || {}
   },
 
   /**