code: def test_get_loc_missing_nan(self):
      # GH#8569
      idx = Index([1, 2], dtype=np.float64)
      assert idx.get_loc(1) == 0
      with pytest.raises(KeyError, match=r"^3$"):
          idx.get_loc(3)
      with pytest.raises(KeyError, match="^nan$"):
          idx.get_loc(np.nan)
      with pytest.raises(InvalidIndexError, match=r"\[nan\]"):
          # listlike/non-hashable raises TypeError
          idx.get_loc([np.nan])
  
imports: import numpy
  import pytest
  from pandas.errors import InvalidIndexError
  from pandas import NA, Index, RangeIndex, Series, Timestamp
  import pandas._testing
  from pandas.core.arrays import ArrowExtensionArray, FloatingArray
label_desc: Use image node_id 5 for calling the TestGetLoc obj's underlying member method code with example usage: obj.test_get_loc_missing_nan() without return types