Fixing some bugs, adding pending test examples

app/controllers/accounts_controller.rb

@@ -1,5 +1,6 @@
 class AccountsController < ApplicationController
   before_action :set_account
+  before_action :set_webfinger_header
 
   def show
     respond_to do |format|
@@ -13,4 +14,12 @@ class AccountsController < ApplicationController
   def set_account
     @account = Account.find_by!(username: params[:username], domain: nil)
   end
+
+  def set_webfinger_header
+    response.headers['Link'] = "<#{webfinger_account_url}>; rel=\"lrdd\"; type=\"application/xrd+xml\""
+  end
+
+  def webfinger_account_url
+    webfinger_url(resource: "acct:#{@account.acct}@#{Rails.configuration.x.local_domain}")
+  end
 end