code: def test_ensure_env_decorator_sets_gdal_data(gdalenv, monkeypatch):
      """fiona.env.ensure_env finds GDAL from environment"""
  
      @ensure_env
      def f():
          return getenv()["GDAL_DATA"]
  
      monkeypatch.setenv("GDAL_DATA", "/lol/wut")
      assert f() == "/lol/wut"
  
file_path: Fiona/tests/test_env.py
imports: import os
  import sys
  from unittest import mock
  import boto3
  import pytest
  import fiona
  from fiona import _env
  from fiona.env import getenv, hasenv, ensure_env, ensure_env_with_credentials
  from fiona.errors import FionaDeprecationWarning
  from fiona.session import AWSSession, GSSession
label_desc: Use image node_id 3 for calling a global function with example usage: test_ensure_env_decorator_sets_gdal_data(gdalenv, monkeypatch) and returns: getenv