def test_get_single_currency_raw_data_from_excel(self):
data_getter = DataGetter()
for currency_dir in config.get_currency_dir_paths():
df_raw = data_getter.get_raw_data_from_excel_files_for_single_currency(
currency_dir)
self.assertIsInstance(
df_raw, pd.DataFrame,
"There was an issue creating a dataframe from a file in - {}.".
format(currency_dir))
