class_docstr: Test pipelines contain different kinds of node.
class_docstr_tok: ["Test","pipelines","contain","different","kinds","of","node","."]
code: def test_uneven_timestamp(self):
      runtime_pipeline = RuntimePipeline(self.dag_dict)
      timestamp = [0, 500, 2500, 4000, 6000, 7000]
      result = runtime_pipeline([1, 1, 1, 1, 1, 1], timestamp)
      for i in range(6):
          self.assertEqual(
              result.get(),
              [
                  1,
                  3
                  if i == 0
                  else 1
                  if i == 1
                  else 2
                  if i == 2
                  else Empty(),
                  timestamp[i],
              ],
          )
  
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 4 for calling the TestTimeWindowPipeline obj's underlying member method code with example usage: obj.test_uneven_timestamp() without return types