def never_expect_dump_file_to_match(regex, category = 'requests')
      should_never_happen do
        File.exist?(dump_file_path(category)) &&
          read_dump_file(category) =~ regex
      end
    end
def never_expect_dump_file_to_match(regex, category = 'requests')
      should_never_happen do
        File.exist?(dump_file_path(category)) &&
          read_dump_file(category) =~ regex
      end
    end
Assert that the dump file (if it ever exists) its contents will never match
 the given regex.