Excludes MR author from Review roulette61157-reviewer-roulette-shouldn-t-include-the-author-as-a-possibility

Excludes MR author from gitlab_ui and single_codebase Review roulette
results.

2 files changed, 13 insertions, 11 deletions

diff --git a/lib/gitlab/danger/helper.rb b/lib/gitlab/danger/helper.rb
index 7a0fb419f8e..1ecf4a12db7 100644
--- a/lib/gitlab/danger/helper.rb
+++ b/lib/gitlab/danger/helper.rb
@@ -124,6 +124,10 @@ module Gitlab
         %r{\.(md|txt)\z} => :none, # To reinstate roulette for documentation, set to `:docs`.
         %r{\.js\z} => :frontend
       }.freeze
+
+      def new_teammates(usernames)
+        usernames.map { |u| Gitlab::Danger::Teammate.new('username' => u) }
+      end
     end
   end
 end
diff --git a/lib/gitlab/danger/roulette.rb b/lib/gitlab/danger/roulette.rb
index 062eda38ee4..25de0a87c9d 100644
--- a/lib/gitlab/danger/roulette.rb
+++ b/lib/gitlab/danger/roulette.rb
@@ -45,21 +45,19 @@ module Gitlab
       # Known issue: If someone is rejected due to OOO, and then becomes not OOO, the
       # selection will change on next spin
       def spin_for_person(people, random:)
-        person = nil
-        people = people.dup
-
-        people.size.times do
-          person = people.sample(random: random)
-
-          break person unless out_of_office?(person)
+        people.shuffle(random: random)
+          .find(&method(:valid_person?))
+      end
 
-          people -= [person]
-        end
+      private
 
-        person
+      def valid_person?(person)
+        !mr_author?(person) && !out_of_office?(person)
       end
 
-      private
+      def mr_author?(person)
+        person.username == gitlab.mr_author
+      end
 
       def out_of_office?(person)
         username = CGI.escape(person.username)