code: def test_presto_where_latest_partition(self):
      db = mock.Mock()
      db.get_indexes = mock.Mock(
          return_value=[{"column_names": ["ds", "hour"]}]
      )
      db.get_extra = mock.Mock(return_value={})
      df = pd.DataFrame({"ds": ["01-01-19"], "hour": [1]})
      db.get_df = mock.Mock(return_value=df)
      columns = [{"name": "ds"}, {"name": "hour"}]
      result = PrestoEngineSpec.where_latest_partition(
          "test_table", "test_schema", db, select(), columns
      )
      query_result = str(
          result.compile(compile_kwargs={"literal_binds": True})
      )
      self.assertEqual(
          "SELECT  \nWHERE ds = '01-01-19' AND hour = 1", query_result
      )
  
imports: from collections import namedtuple
  from textwrap import dedent
  from unittest import mock, skipUnless
  import pandas
  from flask.ctx import AppContext
  from sqlalchemy import types
  from sqlalchemy.sql import select
  from superset.db_engine_specs.presto import PrestoEngineSpec
  from superset.errors import ErrorLevel, SupersetError, SupersetErrorType
  from superset.sql_parse import ParsedQuery
  from superset.utils.database import get_example_database
  from tests.integration_tests.db_engine_specs.base_tests import TestDbEngineSpec
label_desc: Use image node_id 18 for calling the TestPrestoDbEngineSpec obj's underlying member method code with example usage: obj.test_presto_where_latest_partition() without return types