class_docstr: Test pipelines contain different kinds of node.
class_docstr_tok: ["Test","pipelines","contain","different","kinds","of","node","."]
code: def test_zero_step(self):
      with self.assertRaises(ValueError):
          dag_dict = copy.deepcopy(self.dag_dict)
          dag_dict["op1"]["iter_info"]["param"]["time_step_sec"] = 0
          runtime_pipeline = RuntimePipeline(dag_dict)
          runtime_pipeline(
              [1, 1, 1, 1, 1, 1], [0, 1000, 2000, 3000, 4000, 5000]
          )
  
imports: import unittest
  import copy
  from itertools import zip_longest
  from towhee.runtime.runtime_pipeline import RuntimePipeline
  from towhee.runtime.data_queue import Empty
label_desc: Use image node_id 9 for calling the TestTimeWindowPipeline obj's underlying member method code with example usage: obj.test_zero_step() without return types