code: def test_frame_fillna_limit(self):
      index = np.arange(10)
      df = DataFrame(
          np.random.default_rng(2).standard_normal((10, 4)), index=index
      )
  
      result = df[:2].reindex(index)
      msg = "DataFrame.fillna with 'method' is deprecated"
      with tm.assert_produces_warning(FutureWarning, match=msg):
          result = result.fillna(method="pad", limit=5)
  
      with tm.assert_produces_warning(FutureWarning, match=msg):
          expected = df[:2].reindex(index).fillna(method="pad")
      expected.iloc[-3:] = np.nan
      tm.assert_frame_equal(result, expected)
  
      result = df[-2:].reindex(index)
      with tm.assert_produces_warning(FutureWarning, match=msg):
          result = result.fillna(method="backfill", limit=5)
  
      with tm.assert_produces_warning(FutureWarning, match=msg):
          expected = df[-2:].reindex(index).fillna(method="backfill")
      expected.iloc[:3] = np.nan
      tm.assert_frame_equal(result, expected)
  
imports: import numpy
  import pytest
  from pandas._config import using_pyarrow_string_dtype
  from pandas import Categorical, DataFrame, DatetimeIndex, NaT, PeriodIndex, Series, TimedeltaIndex, Timestamp, date_range, to_datetime
  import pandas._testing
  from pandas.tests.frame.common import _check_mixed_float
label_desc: Use image node_id 24 for calling the TestFillNA obj's underlying member method code with example usage: obj.test_frame_fillna_limit() without return types