code: def test_make_new_inflated_currency_col(dataframe):
      """Test currency inflation for same year added as a new column."""
      df = dataframe.inflate_currency(
          "a",
          country="USA",
          currency_year=2018,
          to_year=2018,
          make_new_column=True,
      )
      assert all(df["a"] == df["a_2018"])
  
file_path: pyjanitor/tests/finance/test_inflate_currency.py
imports: import pytest
  import requests
  from janitor.finance import _inflate_currency, inflate_currency
label_desc: Use image node_id 2 for calling a global function with example usage: test_make_new_inflated_currency_col(dataframe) without return types