code: def test_NA_int_dtype():
      data_int = dict(
          a=[1, None, 3, None, 5],
          b=[9, 10, None, 7, 8],
          c=[6, 19, 20, 100, 1000],
      )
      assert_df_unique_dtype_cols(data_int)
  
imports: from typing import Any, Tuple
  import cupy
  import pandas
  import pytest
  import cudf
  from cudf.core._compat import PANDAS_GE_150
  from cudf.core.buffer import as_buffer
  from cudf.core.column import as_column, build_column
  from cudf.core.df_protocol import DataFrameObject, _CuDFBuffer, _CuDFColumn, _DtypeKind, _MaskKind, _protocol_buffer_to_cudf_buffer, from_dataframe, protocol_dtype_to_cupy_dtype
  from cudf.testing._utils import assert_eq
label_desc: Use image node_id 16 for calling a global function with example usage: test_NA_int_dtype() without return types