Registered user controller method spec

spec/controllers/spree/users_controller_spec.rb

@@ -1,4 +1,5 @@
 require 'spec_helper'
+require 'spree/api/testing_support/helpers'
 
 describe Spree::UsersController, type: :controller do
   include AuthenticationWorkflow
@@ -46,4 +47,18 @@ describe Spree::UsersController, type: :controller do
       expect(orders).not_to include d1o3
     end
   end
+
+  describe "registered_email" do
+    let!(:user) { create(:user) }
+
+    it "returns true if email corresponds to a registered user" do
+      spree_post :registered_email, email: user.email
+      expect(json_response['registered']).to eq true
+    end
+
+    it "returns false if email does not correspond to a registered user" do
+      spree_post :registered_email, email: 'nonregistereduser@example.com'
+      expect(json_response['registered']).to eq false
+    end
+  end
 end