code: def test_drop_labels_or_levels_series(df):
      # Make series with L1 as index
      s = df.set_index("L1").L2
      assert_levels_dropped(s, ["L1"], axis=0)
  
      with pytest.raises(
          ValueError, match="not valid labels or levels"
      ):
          s._drop_labels_or_levels("L4", axis=0)
  
      # Make series with L1 and L2 as index
      s = df.set_index(["L1", "L2"]).L3
      assert_levels_dropped(s, ["L1", "L2"], axis=0)
  
      with pytest.raises(
          ValueError, match="not valid labels or levels"
      ):
          s._drop_labels_or_levels("L4", axis=0)
  
imports: import pytest
  from pandas.core.dtypes.missing import array_equivalent
  import pandas
label_desc: Use image node_id 24 for calling a global function with example usage: test_drop_labels_or_levels_series(df) without return types