code: def test_manager_delete_view(self):
      make_table = {
          "id": 1,
          "name": "table1",
          "cmd": "table",
          "args": [data],
      }
      manager = PerspectiveManager()
      manager._process(make_table, self.post)
      make_view = {
          "id": 2,
          "table_name": "table1",
          "view_name": "view1",
          "cmd": "view",
      }
      manager._process(make_view, self.post)
      delete_view = {
          "id": 3,
          "name": "view1",
          "cmd": "view_method",
          "method": "delete",
      }
      manager._process(delete_view, self.post)
      assert len(manager._views) == 0
  
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 47 for calling the TestPerspectiveManager obj's underlying member method code with example usage: obj.test_manager_delete_view() without return types