specs fix

app/models/ability.rb

@@ -18,19 +18,33 @@ class Ability
         when "GroupMember" then group_member_abilities(user, subject)
         when "ProjectMember" then project_member_abilities(user, subject)
         else []
-        end.concat(global_abilities(user))
+        end
+
+      abilities.concat(global_abilities(user))
+
       abilities -= license_blocked_abilities if License.block_changes?
 
       abilities
     end
 
+    def license_blocked_abilities
+      [
+        :create_issue,
+        :create_merge_request,
+        :push_code,
+        :push_code_to_protected_branches
+      ]
+    end
+
     # List of possible abilities
     # for non-authenticated user
-    def not_auth_abilities(user, subject)
-      project = if subject.kind_of?(Project)
+    def anonymous_abilities(user, subject)
+      project = if subject.is_a?(Project)
                   subject
-                else
+                elsif subject.respond_to?(:project)
                   subject.project
+                else
+                  nil
                 end
 
       if project && project.public?
@@ -50,15 +64,12 @@ class Ability
 
         rules - project_disabled_features_rules(project)
       else
-        []
-      end
-    end
-
-    def anonymous_group_abilities(subject)
-      group = if subject.is_a?(Group)
+        group = if subject.kind_of?(Group)
                   subject
-              else
+                elsif subject.respond_to?(:group)
                   subject.group
+                else
+                  nil
                 end
 
         if group && group.public_profile?
@@ -67,6 +78,7 @@ class Ability
           []
         end
       end
+    end
 
     def anonymous_personal_snippet_abilities(snippet)
       if snippet.public?