fix(backend): Obfuscate avatar/image fix test

- Then Image.url can be non-nullable because we return null if the
  resource is deleted.

backend/src/middleware/softDelete/softDeleteMiddleware.js

@@ -17,10 +17,10 @@ const obfuscate = async (resolve, root, args, context, info) => {
     root.contentExcerpt = 'UNAVAILABLE'
     root.title = 'UNAVAILABLE'
     root.slug = 'UNAVAILABLE'
-    root.avatar = 'UNAVAILABLE'
+    root.avatar = null
     root.about = 'UNAVAILABLE'
     root.name = 'UNAVAILABLE'
-    root.image = null // avoid unecessary 500 errors
+    root.image = null
   }
   return resolve(root, args, context, info)
 }

backend/src/schema/resolvers/images.js

@@ -2,7 +2,7 @@ import Resolver from './helpers/Resolver'
 export default {
   Image: {
     ...Resolver('Image', {
-      undefinedToNull: ['sensitive', 'alt', 'aspectRatio', 'url'],
+      undefinedToNull: ['sensitive', 'alt', 'aspectRatio'],
     }),
   },
 }

backend/src/schema/types/type/Image.gql

@@ -1,5 +1,5 @@
 type Image {
-  url: ID,
+  url: ID!,
   # urlW34: String,
   # urlW160: String,
   # urlW320: String,

backend/src/schema/types/type/Post.gql

@@ -201,7 +201,6 @@ type Query {
     title: String
     slug: String
     content: String
-    image: String
     visibility: Visibility
     pinned: Boolean
     createdAt: String