code: def test_viewer_update_dict_partial(self):
      table = Table({"a": [1, 2, 3], "b": [5, 6, 7]}, index="a")
      viewer = PerspectiveViewer()
      viewer.load(table)
      viewer.update({"a": [1, 2, 3], "b": [8, 9, 10]})
      assert table.size() == 3
      assert viewer.table.size() == 3
      assert viewer.table.view().to_dict() == {
          "a": [1, 2, 3],
          "b": [8, 9, 10],
      }
  
imports: import numpy
  import pandas
  from perspective import PerspectiveViewer, Table
label_desc: Use image node_id 17 for calling the TestViewer obj's underlying member method code with example usage: obj.test_viewer_update_dict_partial() without return types