code: def test_make_new_currency_col(dataframe):
      """Test converting to same currency equals original currency column."""
      df = dataframe.convert_currency(
          "a", "USD", "USD", make_new_column=True
      )
      assert all(df["a"] == df["a_USD"])
  
file_path: pyjanitor/tests/finance/test_convert_currency.py
imports: from datetime import date, datetime
  import pytest
  import requests
  from janitor.finance import convert_currency
label_desc: Use image node_id 2 for calling a global function with example usage: test_make_new_currency_col(dataframe) without return types