text: from io import StringIO
  
  from django.core.management import call_command
  from django.test import TestCase
  
  from germanium.tools import assert_equal  # pylint: disable=E0401
  
  from test_chamber.importers import BulkCSVRecordImporter, CSVRecordImporter  # pylint: disable=E0401
  from test_chamber.models import CSVRecord  # pylint: disable=E0401
  
  
  class ImporterTestCase(TestCase):
  
      def test_records_should_be_bulk_imported_from_csv(self):
          assert_equal(CSVRecord.objects.count(), 0)
          BulkCSVRecordImporter().import_csv()
  
          assert_equal(CSVRecord.objects.count(), 7)
          assert_equal(CSVRecord.objects.last().name, 'Geordi LaForge')  # Ensure correct value is stored
          assert_equal(CSVRecord.objects.last().number, 888)  # Ensure clean methods work
  
      def test_records_should_be_imported_without_optional_fields_should_be_bulk_imported_from_csv(self):
          assert_equal(CSVRecord.objects.count(), 0)
          with open('data/required_fields_filled.csv') as f:
              CSVRecordImporter().import_csv(f)
          assert_equal(CSVRecord.objects.count(), 5)
  
      def test_records_should_be_imported_from_csv(self):
          assert_equal(CSVRecord.objects.count(), 0)
          BulkCSVRecordImporter().import_csv()
  
          assert_equal(CSVRecord.objects.count(), 7)
          assert_equal(CSVRecord.objects.last().name, 'Geordi LaForge')  # Ensure correct value is stored
          assert_equal(CSVRecord.objects.last().number, 888)  # Ensure clean methods work
  
      def test_records_should_be_imported_without_optional_fields_should_be_imported_from_csv(self):
          assert_equal(CSVRecord.objects.count(), 0)
          with open('data/required_fields_filled.csv') as f:
              CSVRecordImporter().import_csv(f)
          assert_equal(CSVRecord.objects.count(), 5)
  
      def test_records_should_be_bulk_imported_from_csv_with_command(self):
          assert_equal(CSVRecord.objects.count(), 0)
          call_command('bulk_csv_import', stdout=StringIO(), stderr=StringIO())
          assert_equal(CSVRecord.objects.count(), 7)
          assert_equal(CSVRecord.objects.last().name, 'Geordi LaForge')  # Ensure correct value is stored
          assert_equal(CSVRecord.objects.last().number, 888)  # Ensure clean methods work
  
      def test_records_should_be_imported_without_optional_fields_should_be_bulk_imported_from_csv_with_command(self):
          assert_equal(CSVRecord.objects.count(), 0)
          call_command('csv_import', stdout=StringIO(), stderr=StringIO())
          assert_equal(CSVRecord.objects.count(), 7)
          assert_equal(CSVRecord.objects.last().name, 'Geordi LaForge')  # Ensure correct value is stored
          assert_equal(CSVRecord.objects.last().number, 888)  # Ensure clean methods work
  