2 files changed, 41 insertions, 0 deletions
diff --git a/com/lib/com/gitlab/patch/draw_route.rb b/com/lib/com/gitlab/patch/draw_route.rb
new file mode 100644
index 00000000000..8626ff06c28
--- /dev/null
+++ b/com/lib/com/gitlab/patch/draw_route.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+module Com
+  module Gitlab
+    module Patch
+      module DrawRoute
+        extend ::Gitlab::Utils::Override
+
+        override :draw_com
+        def draw_com(routes_name)
+          draw_route(route_path("com/config/routes/#{routes_name}.rb"))
+        end
+      end
+    end
+  end
+end
diff --git a/com/spec/lib/gitlab/patch/draw_route_spec.rb b/com/spec/lib/gitlab/patch/draw_route_spec.rb
new file mode 100644
index 00000000000..823bebd5c0d
--- /dev/null
+++ b/com/spec/lib/gitlab/patch/draw_route_spec.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+require 'com_spec_helper'
+
+describe Gitlab::Patch::DrawRoute do
+  subject do
+    Class.new do
+      include Gitlab::Patch::DrawRoute
+
+      def route_path(route_name)
+        File.expand_path("../../../../../#{route_name}", __dir__)
+      end
+    end.new
+  end
+
+  before do
+    allow(subject).to receive(:instance_eval)
+  end
+
+  it 'raises an error when nothing is drawn' do
+    expect { subject.draw(:non_existing) }
+        .to raise_error(described_class::RoutesNotFound)
+  end
+end