discourse/spec/requests/permalinks_controller_spec.rb

require 'rails_helper'

describe PermalinksController do
  let(:topic) { Fabricate(:topic) }
  let(:permalink) { Fabricate(:permalink, url: "deadroutee/topic/546") }

  describe 'show' do
    it "should redirect to a permalink's target_url with status 301" do
      permalink.update!(topic_id: topic.id)

      get "/#{permalink.url}"

      expect(response).to redirect_to(topic.relative_url)
      expect(response.status).to eq(301)
    end

    it "should work for subfolder installs too" do
      permalink.update!(topic_id: topic.id)
      GlobalSetting.stubs(:relative_url_root).returns('/forum')
      Discourse.stubs(:base_uri).returns("/forum")

      get "/#{permalink.url}"

      expect(response).to redirect_to(topic.relative_url)
      expect(response.status).to eq(301)
    end

    it "should apply normalizations" do
      permalink.update!(external_url: '/topic/100')
      SiteSetting.permalink_normalizations = "/(.*)\\?.*/\\1"

      get "/#{permalink.url}", params: { test: "hello" }

      expect(response).to redirect_to('/topic/100')
      expect(response.status).to eq(301)

      SiteSetting.permalink_normalizations = "/(.*)\\?.*/\\1X"

      get "/#{permalink.url}", params: { test: "hello" }

      expect(response.status).to eq(404)
    end

    it 'return 404 if permalink record does not exist' do
      get '/not/a/valid/url'
      expect(response.status).to eq(404)
    end
  end
end