code: def test_not_df():
      with pytest.raises(ValueError):
          dd.correlation_matrix("this_is_a_string")
  
file_path: data-describe/tests/test_correlation.py
imports: import plotly
  import pytest
  import matplotlib
  from matplotlib.axes import Axes
  from pandas.testing import assert_frame_equal
  import data_describe
  from data_describe.compat import _is_dataframe
  from data_describe.core.correlation import CorrelationWidget
label_desc: Use image node_id 1 for calling a global function with example usage: test_not_df() without return types