code: def test_text():
      data = ["here is some test text", "and a little more", "and more"]
      assert isinstance(format_data(data), list)
      assert isinstance(format_data(data)[0], np.ndarray)
  
file_path: hypertools/tests/test_format_data.py
imports: import numpy
  import pandas
  from hypertools.tools import format_data
  from hypertools.plot.plot import plot
label_desc: Use image node_id 3 for calling a global function with example usage: test_text() without return types