code: def test_deep_equals_positive(fixture):
      """Tests that deep_equals correctly identifies equal objects as equal."""
      x = deepcopy(fixture)
      y = deepcopy(fixture)
  
      msg = (
          f"deep_copy incorrectly returned False for two identical copies of "
          f"the following object: {x}"
      )
      assert deep_equals(x, y), msg
  
imports: from copy import deepcopy
  import numpy
  import pandas
  import pytest
  from sktime.forecasting.base import ForecastingHorizon
  from sktime.utils._testing.deep_equals import deep_equals
label_desc: Use image node_id 1 for calling a global function with example usage: test_deep_equals_positive(fixture) without return types