code: def test_full_volume_used(self):
      orderSize = 100
      order = backtesting.MarketOrder(
          broker.Order.Action.BUY,
          BaseTestCase.TestInstrument,
          orderSize,
          False,
          broker.IntegerTraits(),
      )
      price = 10
      volumeUsed = 0
  
      # Try the order once.
      slippedPrice = self.slippage.calculatePrice(
          order,
          price,
          order.getQuantity(),
          self.barsBuilder.nextBar(10, 11, 9, 10, volume=orderSize),
          volumeUsed,
      )
      self.assertEqual(slippedPrice, price * 1.1)
  
imports: import unittest
  from .None import broker_backtesting_test
  from pyalgotrade import broker
  from pyalgotrade.broker import slippage
  from pyalgotrade.broker import backtesting
  from pyalgotrade import bar
label_desc: Use image node_id 5 for calling the VolumeShareSlippageTestCase obj's underlying member method code with example usage: obj.test_full_volume_used() without return types