code: def test_list_of_str(self):
      labels = ["timestep 0", "timestep 1"]
      result = Title(labels)
      assert labels == result.titles
      assert len(result) == 2
  
imports: from matplotlib.testing import setup
  import numpy
  import numpy.testing
  import matplotlib.pyplot
  import matplotlib
  import packaging.version
  import pytest
  import animatplot
  from tests.tools import animation_compare
  from animatplot.blocks import Block, Title
label_desc: Use image node_id 1 for calling the TestTitleBlock obj's underlying member method code with example usage: obj.test_list_of_str() without return types