docstr: StreamQuery - AthenaQueryExecution - engine_execution_time_in_millis
docstr_tok: ["StreamQuery","-","AthenaQueryExecution","-","engine_execution_time_in_millis"]
code: def test_engine_execution_time_in_millis(self):
      """StreamQuery - AthenaQueryExecution - engine_execution_time_in_millis"""
      assert_equals(
          self._succeeded_execution.engine_execution_time_in_millis,
          6166,
      )
  
imports: from datetime import datetime
  from dateutil.tz import tzlocal
  from mock import MagicMock
  from nose.tools import assert_equals, assert_true, assert_false
  from streamalert.scheduled_queries.handlers.athena import AthenaClient, AthenaQueryExecution, AthenaQueryResult
label_desc: Use image node_id 9 for calling the TestAthenaQueryExecution obj's underlying member method code with example usage: obj.test_engine_execution_time_in_millis() without return types