@pytest.mark.asyncio
async def test_decrease_allowance_zero_spender(token_contract: StarknetContract, uint256: Callable):
    approve_amount = uint256(APPROVE_AMOUNT)
    with pytest.raises(StarkException, match='assert_not_zero\\(enough_allowance\\)'):
        (await token_contract.decreaseAllowance(spender=0, subtracted_value=approve_amount).invoke(caller_address=initialized_account))
@pytest.mark.asyncio
async def test_decrease_allowance_zero_spender(token_contract: StarknetContract, uint256: Callable):
    approve_amount = uint256(APPROVE_AMOUNT)
    with pytest.raises(StarkException, match='assert_not_zero\\(enough_allowance\\)'):
        (await token_contract.decreaseAllowance(spender=0, subtracted_value=approve_amount).invoke(caller_address=initialized_account))