code: def test_update_from_schema(self):
      tbl = Table({"a": str, "b": int})
      tbl.update([{"a": "abc", "b": 123}])
      assert tbl.view().to_records() == [{"a": "abc", "b": 123}]
  
imports: import numpy
  import pyarrow
  import pandas
  from datetime import date, datetime
  from perspective.table import Table
  from pytest import mark
label_desc: Use image node_id 2 for calling the TestUpdate obj's underlying member method code with example usage: obj.test_update_from_schema() without return types