TST: missing import for test_converters.py

unittests/test_converters.py

@@ -31,7 +31,8 @@ import yaml
 from caoscrawler.converters import (Converter, ConverterValidationError, DictElementConverter,
                                     DirectoryConverter, DictIntegerElementConverter,
                                     handle_value, MarkdownFileConverter,
-                                    FloatElementConverter, JSONFileConverter)
+                                    FloatElementConverter, IntegerElementConverter,
+                                    JSONFileConverter)
 from caoscrawler.converters import _AbstractScalarValueElementConverter
 from caoscrawler.crawl import Crawler
 from caoscrawler.stores import GeneralStore