Remove unused db column

test/system/registrar_area/invoices/list_test.rb

@@ -3,10 +3,9 @@ require 'test_helper'
 class ListInvoicesTest < ApplicationSystemTestCase
   setup do
     @user = users(:api_bestnames)
-    sign_in @user
-
     @invoice = invoices(:one)
-    eliminate_effect_of_other_invoices
+
+    sign_in @user
   end
 
   def test_show_balance
@@ -14,31 +13,23 @@ class ListInvoicesTest < ApplicationSystemTestCase
     assert_text "Your current account balance is 100,00 EUR"
   end
 
-  def test_show_invoices_of_current_registrar
-    registrar = registrars(:bestnames)
-    @user.update!(registrar: registrar)
-    @invoice.update!(seller: registrar)
+  def test_shows_invoice_owned_by_current_user
+    owning_registrar = registrars(:bestnames)
+    assert_equal owning_registrar, @user.registrar
+    @invoice.update!(buyer: owning_registrar)
 
     visit registrar_invoices_url
 
-    assert_css '.invoice'
+    assert_text @invoice.to_s
   end
 
-  def test_do_not_show_invoices_of_other_registrars
-    registrar = registrars(:goodnames)
-    @user.update!(registrar: registrar)
-    @invoice.update!(seller: registrar)
+  def test_hides_invoice_owned_by_other_user
+    other_registrar = registrars(:goodnames)
+    assert_not_equal other_registrar, @user.registrar
+    @invoice.update!(buyer: other_registrar)
 
     visit registrar_invoices_url
 
-    assert_no_css '.invoice'
-  end
-
-  private
-
-  def eliminate_effect_of_other_invoices
-    Invoice.connection.disable_referential_integrity do
-      Invoice.delete_all("id != #{@invoice.id}")
-    end
+    assert_no_text @invoice.to_s
   end
 end