code: def test_process_1d_xarray_dataarray_with_no_coords(self):
      import xarray as xr
      import pandas as pd
  
      da = xr.DataArray(data=[1, 2, 3])
  
      data, x, y, by, groupby = process_xarray(
          data=da, **self.default_kwargs
      )
      assert isinstance(data, pd.DataFrame)
      assert x == "index"
      assert y == ["value"]
      assert not by
      assert not groupby
  
imports: import numpy
  import pandas
  import pytest
  from unittest import TestCase, SkipTest
  from hvplot.util import check_crs, is_list_like, process_crs, process_xarray, _convert_col_names_to_str, instantiate_crs_str
label_desc: Use image node_id 2 for calling the TestProcessXarray obj's underlying member method code with example usage: obj.test_process_1d_xarray_dataarray_with_no_coords() without return types