Function assert_sqlx_code

tests/client_compat.rs:1077–1083

(err: &sqlx::Error, expected: &str)

}

fn assert_sqlx_code(err: &sqlx::Error, expected: &str) {
    let code = err
        .as_database_error()
        .and_then(|db| db.code())
        .map(|code| code.into_owned());
    assert_eq!(code.as_deref(), Some(expected));
}

fn startup_control_packet(code: i32, tail: &[u8]) -> Vec<u8> {
    let len = 8 + tail.len() as i32;