code: def test_manager_create_view_zero(self):
      message = {
          "id": 1,
          "table_name": "table1",
          "view_name": "view1",
          "cmd": "view",
      }
      manager = PerspectiveManager()
      table = Table(data)
      manager.host_table("table1", table)
      manager._process(message, self.post)
      assert manager._views["view1"].num_rows() == 3
  
imports: import json
  import time
  import numpy
  import pyarrow
  from datetime import datetime
  from functools import partial
  from pytest import raises
  from perspective import Table, PerspectiveError, PerspectiveManager
label_desc: Use image node_id 15 for calling the TestPerspectiveManager obj's underlying member method code with example usage: obj.test_manager_create_view_zero() without return types