code: def test_nop(self):
      perf = self.run_algorithm()
  
      zeros = pd.Series(0.0, index=self.closes)
      all_zero_fields = [
          "algorithm_period_return",
          "benchmark_period_return",
          "capital_used",
          "excess_return",
          "long_exposure",
          "long_value",
          "longs_count",
          "max_drawdown",
          "max_leverage",
          "short_exposure",
          "short_value",
          "shorts_count",
          "treasury_period_return",
      ]
  
      for field in all_zero_fields:
          assert_equal(
              perf[field],
              zeros,
              check_names=False,
              check_dtype=False,
              msg=field,
          )
  
      nan_then_zero = pd.Series(0.0, index=self.closes)
      nan_then_zero[0] = float("nan")
      nan_then_zero_fields = (
          "algo_volatility",
          "benchmark_volatility",
      )
      for field in nan_then_zero_fields:
          assert_equal(
              perf[field],
              nan_then_zero,
              check_names=False,
              msg=field,
          )
  
      empty_lists = pd.Series([[]] * len(self.closes), self.closes)
      empty_list_fields = (
          "orders",
          "positions",
          "transactions",
      )
      for field in empty_list_fields:
          assert_equal(
              perf[field],
              empty_lists,
              check_names=False,
              msg=field,
          )
  
imports: import unittest
  import numpy
  import pandas
  from zipline import api
  from zipline.assets import Equity, Future
  from zipline.assets.synthetic import make_commodity_future_info
  from zipline.data.data_portal import DataPortal
  from zipline.data.resample import MinuteResampleSessionBarReader
  from zipline.testing import parameter_space, prices_generating_returns, simulate_minutes_for_day
  from zipline.testing.fixtures import WithMakeAlgo, WithConstantEquityMinuteBarData, WithConstantFutureMinuteBarData, WithWerror, ZiplineTestCase
  from zipline.testing.predicates import assert_equal, wildcard
label_desc: Use image node_id 3 for calling the TestConstantPrice obj's underlying member method code with example usage: obj.test_nop() without return types