code: def test_invalid_truediv():
      BTC = Instrument("BTC", 8, "Bitcoin")
  
      with pytest.raises(InvalidTradingPair):
          pair = BTC / BTC
  
file_path: tensortrade/tests/tensortrade/unit/oms/instruments/test_instrument.py
imports: import pytest
  from tensortrade.oms.instruments import Instrument, Quantity
  from tensortrade.core.exceptions import InvalidTradingPair
label_desc: Use image node_id 7 for calling a global function with example usage: test_invalid_truediv() without return types