fn payload_with_date(date: &str) -> String {

    format!(

}

fn parse_date(date: &str) -> Result<String, String> {

    let input = parse_create_transaction_logical_payload(&payload_with_date(date))?;

    Ok(input

        .post_date

        .ok_or_else(|| "post_date missing".to_string())?

        .to_rfc3339())

}

fn accepts_rfc3339_with_timezone() {

    let parsed = parse_date("2026-06-15T09:30:00+02:00").expect("rfc3339 accepted");

    assert_eq!(parsed, "2026-06-15T07:30:00+00:00");

}

fn accepts_datetime_local_with_seconds_as_utc() {

    let parsed = parse_date("2026-06-15T09:30:45").expect("datetime-local accepted");

    assert_eq!(parsed, "2026-06-15T09:30:45+00:00");

}

fn accepts_datetime_local_without_seconds_as_utc() {

    let parsed = parse_date("2026-06-15T09:30").expect("datetime-local accepted");

    assert_eq!(parsed, "2026-06-15T09:30:00+00:00");

}

fn accepts_bare_date_as_midnight_utc() {

    let parsed = parse_date("2026-06-15").expect("bare date accepted");

    assert_eq!(parsed, "2026-06-15T00:00:00+00:00");

}

fn rejects_clearly_invalid_date() {

    let err = parse_date("not-a-date").expect_err("invalid date must error");

    assert!(

        err.contains("invalid :date"),

}