code: def test_get_loc_nan_object_dtype_nonmonotonic_nonunique(self):
      # case that goes through _maybe_get_bool_indexer
      idx = Index(["foo", np.nan, None, "foo", 1.0, None], dtype=object)
  
      # we dont raise KeyError on nan
      res = idx.get_loc(np.nan)
      assert res == 1
  
      # we only match on None, not on np.nan
      res = idx.get_loc(None)
      expected = np.array([False, False, True, False, False, True])
      tm.assert_numpy_array_equal(res, expected)
  
      # we don't match at all on mismatched NA
      with pytest.raises(KeyError, match="NaT"):
          idx.get_loc(NaT)
  
file_path: pandas/pandas/tests/indexes/base_class/test_indexing.py
imports: import numpy
  import pytest
  from pandas._libs import index
  import pandas
  from pandas import Index, NaT
  import pandas._testing
label_desc: Use image node_id 2 for calling the TestGetLoc obj's underlying member method code with example usage: obj.test_get_loc_nan_object_dtype_nonmonotonic_nonunique() without return types