text: """Test the last_shef service."""
  
  from fastapi.testclient import TestClient
  
  from iemws.main import app
  
  client = TestClient(app)
  
  
  def test_valid_request():
      """Test valid request."""
      req = client.get("/last_shef.txt?station=KDMX")
      assert req.text.startswith("station")
  