code: def test_widget_replace(self):
      data = {"a": np.arange(0, 50)}
      widget = PerspectiveWidget(data)
      widget.replace({"a": [1]})
      assert widget.table.size() == 1
  
imports: from datetime import date, datetime
  from functools import partial
  from types import MethodType
  import numpy
  from perspective import PerspectiveError, PerspectiveWidget, Table
  from pytest import raises
label_desc: Use image node_id 24 for calling the TestWidget obj's underlying member method code with example usage: obj.test_widget_replace() without return types