code: def test_dataset_empty_raises(self, ds1, backend):
      with pytest.raises(ValueError, match="empty xarray.Dataset"):
          ds1.drop_vars("foo").hvplot()
  
imports: import hvplot
  import holoviews
  import numpy
  import pandas
  import pytest
  import xarray
  from holoviews import Store
  from holoviews.core.options import Options, OptionTree
label_desc: Use image node_id 7 for calling the TestXarrayTitle obj's underlying member method code with example usage: obj.test_dataset_empty_raises(ds1, backend) without return types