Function assert_result_error_contains

benchmarks/src/sql_benchmark.rs:1594–1601

(result: Result<T>, expected_message: &str)

    }

    fn assert_result_error_contains<T: Debug>(result: Result<T>, expected_message: &str) {
        let error = result.expect_err("operation should fail");
        let message = error.to_string();
        assert!(
            message.contains(expected_message),
            "expected error containing {expected_message:?}, got {message:?}"
        );
    }

    fn formatted_last_results(benchmark: &SqlBenchmark) -> Vec<Vec<String>> {
        format_record_batches(