code: def test_move_unique():
      """Raise if the axis is not unique"""
      df = pd.DataFrame(
          {"a": [2, 4, 6], "b": [1, 3, 5], "c": [7, 8, 9]}
      )
      df.columns = ["a", "b", "b"]
      with pytest.raises(AssertionError):
          df.move(source="a", axis=1)
  
file_path: pyjanitor/tests/functions/test_move.py
imports: import numpy
  import pandas
  import pytest
  from hypothesis import given, settings
  from pandas.testing import assert_index_equal, assert_series_equal
  from janitor.testing_utils.strategies import df_strategy
label_desc: Use image node_id 9 for calling a global function with example usage: test_move_unique() without return types