code: def test_dti_representation_to_series(self, unit):
      idx1 = DatetimeIndex([], freq="D")
      idx2 = DatetimeIndex(["2011-01-01"], freq="D")
      idx3 = DatetimeIndex(["2011-01-01", "2011-01-02"], freq="D")
      idx4 = DatetimeIndex(
          ["2011-01-01", "2011-01-02", "2011-01-03"], freq="D"
      )
      idx5 = DatetimeIndex(
          ["2011-01-01 09:00", "2011-01-01 10:00", "2011-01-01 11:00"],
          freq="h",
          tz="Asia/Tokyo",
      )
      idx6 = DatetimeIndex(
          ["2011-01-01 09:00", "2011-01-01 10:00", NaT], tz="US/Eastern"
      )
      idx7 = DatetimeIndex(["2011-01-01 09:00", "2011-01-02 10:15"])
  
      exp1 = """Series([], dtype: datetime64[ns])"""
  
      exp2 = "0   2011-01-01\ndtype: datetime64[ns]"
  
      exp3 = "0   2011-01-01\n1   2011-01-02\ndtype: datetime64[ns]"
  
      exp4 = (
          "0   2011-01-01\n"
          "1   2011-01-02\n"
          "2   2011-01-03\n"
          "dtype: datetime64[ns]"
      )
  
      exp5 = (
          "0   2011-01-01 09:00:00+09:00\n"
          "1   2011-01-01 10:00:00+09:00\n"
          "2   2011-01-01 11:00:00+09:00\n"
          "dtype: datetime64[ns, Asia/Tokyo]"
      )
  
      exp6 = (
          "0   2011-01-01 09:00:00-05:00\n"
          "1   2011-01-01 10:00:00-05:00\n"
          "2                         NaT\n"
          "dtype: datetime64[ns, US/Eastern]"
      )
  
      exp7 = (
          "0   2011-01-01 09:00:00\n"
          "1   2011-01-02 10:15:00\n"
          "dtype: datetime64[ns]"
      )
  
      with pd.option_context("display.width", 300):
          for idx, expected in zip(
              [idx1, idx2, idx3, idx4, idx5, idx6, idx7],
              [exp1, exp2, exp3, exp4, exp5, exp6, exp7],
          ):
              ser = Series(idx.as_unit(unit))
              result = repr(ser)
              assert result == expected.replace("[ns", f"[{unit}")
  
imports: from datetime import datetime
  import dateutil.tz
  import numpy
  import pytest
  import pytz
  import pandas
  from pandas import DatetimeIndex, NaT, Series
  import pandas._testing
label_desc: Use image node_id 7 for calling the TestDatetimeIndexRendering obj's underlying member method code with example usage: obj.test_dti_representation_to_series(unit) without return types