Add custom avatars for Alert and Support Bot

This change adds custom avatars for
Alert and Support Bot.

app/models/concerns/avatarable.rb

@@ -36,6 +36,12 @@ module Avatarable
     end
   end
 
+  class_methods do
+    def bot_avatar(image:)
+      Rails.root.join('app', 'assets', 'images', 'bot_avatars', image).open
+    end
+  end
+
   def avatar_type
     unless self.avatar.image?
       errors.add :avatar, "file format is not supported. Please try one of the following supported formats: #{AvatarUploader::SAFE_IMAGE_EXT.join(', ')}"

app/models/user.rb

@@ -642,6 +642,7 @@ class User < ApplicationRecord
       unique_internal(where(user_type: :alert_bot), 'alert-bot', email_pattern) do |u|
         u.bio = 'The GitLab alert bot'
         u.name = 'GitLab Alert Bot'
+        u.avatar = bot_avatar(image: 'alert-bot.png')
       end
     end
 
@@ -661,6 +662,7 @@ class User < ApplicationRecord
       unique_internal(where(user_type: :support_bot), 'support-bot', email_pattern) do |u|
         u.bio = 'The GitLab support bot used for Service Desk'
         u.name = 'GitLab Support Bot'
+        u.avatar = bot_avatar(image: 'support-bot.png')
       end
     end
 

changelogs/unreleased/210523-visually-align-system-bots-alert-support-and-security.yml

+---
+title: Add custom avatars for Alert and Support Bot
+merge_request: 36269
+author:
+type: added

spec/models/user_spec.rb

@@ -4781,9 +4781,21 @@ RSpec.describe User do
       end
     end
 
+    shared_examples 'bot user avatars' do |bot_type, avatar_filename|
+      it 'sets the custom avatar for the created bot' do
+        bot_user = described_class.public_send(bot_type)
+
+        expect(bot_user.avatar.url).to be_present
+        expect(bot_user.avatar.filename).to eq(avatar_filename)
+      end
+    end
+
     it_behaves_like 'bot users', :alert_bot
     it_behaves_like 'bot users', :support_bot
     it_behaves_like 'bot users', :migration_bot
     it_behaves_like 'bot users', :ghost
+
+    it_behaves_like 'bot user avatars', :alert_bot, 'alert-bot.png'
+    it_behaves_like 'bot user avatars', :support_bot, 'support-bot.png'
   end
 end