code: def test_random_threshold_sequence(self):
      assert len(nxt.random_threshold_sequence(10, 0.5)) == 10
      assert nxt.random_threshold_sequence(10, 0.5, seed=42) == [
          "d",
          "i",
          "d",
          "d",
          "d",
          "i",
          "i",
          "i",
          "d",
          "d",
      ]
      assert pytest.raises(
          ValueError, nxt.random_threshold_sequence, 10, 1.5
      )
  
imports: import pytest
  import networkx
  import networkx.algorithms.threshold
  from networkx.algorithms.isomorphism.isomorph import graph_could_be_isomorphic
label_desc: Use image node_id 10 for calling the TestGeneratorThreshold obj's underlying member method code with example usage: obj.test_random_threshold_sequence() without return types