changed user_id to id

spec/vulnerabilities/insecure_dor_spec.rb

@@ -3,7 +3,7 @@ require "spec_helper"
 
 feature "insecure direct object reference" do
   let(:normal_user) { UserFixture.normal_user }
-  let(:another_user) { User.find_by(user_id: 2) }
+  let(:another_user) { User.find_by(id: 2) }
 
   before do
     UserFixture.reset_all_users
@@ -13,7 +13,7 @@ feature "insecure direct object reference" do
   scenario "attack one" do
     login(normal_user)
 
-    visit "/users/#{normal_user.user_id}/benefit_forms"
+    visit "/users/#{normal_user.id}/benefit_forms"
     download_url = first(".widget-body a")[:href]
     visit download_url.sub(/name=(.*?)&/, "name=config/database.yml&")
 
@@ -22,9 +22,9 @@ feature "insecure direct object reference" do
   end
 
   scenario "attack two\nTutorial: https://github.com/OWASP/railsgoat/wiki/A4-Insecure-Direct-Object-Reference" do
-    expect(normal_user.user_id).not_to eq(another_user.user_id)
+    expect(normal_user.id).not_to eq(another_user.id)
 
-    visit "/users/#{another_user.user_id}/work_info"
+    visit "/users/#{another_user.id}/work_info"
 
     expect(first("td").text).not_to include(another_user.name)
     expect(first("td").text).to include(normal_user.name)