code: def test_empty_df_single_value():
      # Act & Assert
      assert_that(
          calling(IsSingleValue().run).with_args(pd.DataFrame()),
          raises(
              DeepchecksValueError,
              r"Can\'t create a Dataset object with an empty dataframe",
          ),
      )
  
imports: import numpy
  import pandas
  from hamcrest import assert_that, calling, equal_to, greater_than, has_items, has_length, raises
  from deepchecks.core.errors import DatasetValidationError, DeepchecksValueError
  from deepchecks.tabular.checks.data_integrity.is_single_value import IsSingleValue
  from tests.base.utils import equal_condition_result
label_desc: Use image node_id 7 for calling a global function with example usage: test_empty_df_single_value() without return types