Use Estonian reference number format instead of ISO 11649

test/integration/tasks/data_migrations/regenerate_registrar_reference_numbers_test.rb

@@ -0,0 +1,50 @@
+require 'test_helper'
+
+class RegenerateRegistrarReferenceNumbersTaskTest < ActiveSupport::TestCase
+  def test_regenerates_registrar_reference_numbers_to_estonian_format
+    registrar = registrars(:bestnames)
+    registrar.update_column(:reference_no, 'RF1111')
+
+    capture_io { run_task }
+    registrar.reload
+
+    assert_not registrar.reference_no.start_with?('RF')
+  end
+
+  def test_does_not_regenerate_when_the_task_is_run_again
+    registrar = registrars(:bestnames)
+    registrar.update!(reference_no: '1111')
+
+    capture_io { run_task }
+    registrar.reload
+
+    assert_equal '1111', registrar.reference_no
+  end
+
+  def test_keeps_iso_reference_number_on_the_invoice_unchanged
+    registrar = registrars(:bestnames)
+    registrar.update_column(:reference_no, 'RF1111')
+    invoice = registrar.invoices.first
+    invoice.update!(reference_no: 'RF2222')
+
+    capture_io { run_task }
+    invoice.reload
+
+    assert_equal 'RF2222', invoice.reference_no
+  end
+
+  def test_output
+    registrar = registrars(:bestnames)
+    registrar.update_column(:reference_no, 'RF1111')
+
+    assert_output "Registrars processed: 1\n" do
+      run_task
+    end
+  end
+
+  private
+
+  def run_task
+    Rake::Task['data_migrations:regenerate_registrar_reference_numbers'].execute
+  end
+end