Fix routes (#647)

Author: santib

app/constraints/impersonation/enabled_constraint.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module Impersonation
+  class EnabledConstraint
+    def matches?(_request)
+      Flipper[:impersonation_tool].enabled? || Rails.env.test?
+    end
+  end
+end

config/routes.rb

@@ -12,7 +12,7 @@
   namespace :api do
     namespace :v1, defaults: { format: :json } do
       get :status, to: 'health#status'
-      resources :impersonations, only: %i[create] if Flipper[:impersonation_tool].enabled? || Rails.env.test?
+      resources :impersonations, only: %i[create], constraints: Impersonation::EnabledConstraint.new
       devise_scope :user do
         resource :user, only: %i[update show]
       end