def METHOD_NAME(
    mocker: MockFixture, app_context: None
) -> None:
    from superset.reports.commands.alert import AlertCommand
    execute_query_mock = mocker.patch(
        "superset.reports.commands.alert.AlertCommand._execute_query",
        side_effect=lambda: pd.DataFrame([{"sample_col": 0}]),
    )
    command = AlertCommand(report_schedule=mocker.Mock())
    command.validate()
    assert execute_query_mock.call_count == 1