Merge branch 'single-codebase-favicon-specs' into 'master'

Extracted EE specific lines from favicon_spec.rb

See merge request gitlab-org/gitlab-ee!12404

ee/spec/lib/gitlab/favicon_spec.rb

+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Gitlab::Favicon, :request_store do
+  describe '.main' do
+    it 'has green favicon for development' do
+      allow(Rails).to receive(:env).and_return(ActiveSupport::StringInquirer.new('development'))
+      expect(described_class.main).to match_asset_path 'favicon-green.png'
+    end
+  end
+end

spec/lib/gitlab/favicon_spec.rb

@@ -7,9 +7,9 @@ RSpec.describe Gitlab::Favicon, :request_store do
       expect(described_class.main).to match_asset_path '/assets/favicon.png'
     end
 
-    it 'has green favicon for development' do
+    it 'has blue favicon for development', unless: Gitlab.ee? do
       allow(Rails).to receive(:env).and_return(ActiveSupport::StringInquirer.new('development'))
-      expect(described_class.main).to match_asset_path 'favicon-green.png'
+      expect(described_class.main).to match_asset_path '/assets/favicon-blue.png'
     end
 
     it 'has yellow favicon for canary' do