code: def test_interp_timedelta64(self):
      # GH 6424
      df = Series([1, np.nan, 3], index=pd.to_timedelta([1, 2, 3]))
      result = df.interpolate(method="time")
      expected = Series(
          [1.0, 2.0, 3.0], index=pd.to_timedelta([1, 2, 3])
      )
      tm.assert_series_equal(result, expected)
  
      # test for non uniform spacing
      df = Series([1, np.nan, 3], index=pd.to_timedelta([1, 2, 4]))
      result = df.interpolate(method="time")
      expected = Series(
          [1.0, 1.666667, 3.0], index=pd.to_timedelta([1, 2, 4])
      )
      tm.assert_series_equal(result, expected)
  
imports: import numpy
  import pytest
  import pandas.util._test_decorators
  import pandas
  from pandas import Index, MultiIndex, Series, date_range, isna
  import pandas._testing
label_desc: Use image node_id 44 for calling the TestSeriesInterpolateData obj's underlying member method code with example usage: obj.test_interp_timedelta64() without return types