golem-schema 1.6.1

Golem schema and value model
Documentation 
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// Copyright 2024-2026 Golem Cloud
//
// Licensed under the Golem Source License v1.1 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://license.golem.cloud/LICENSE
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use super::*;
use chrono::{NaiveDate, TimeZone};
use proptest::prelude::*;
use test_r::test;

fn datetime_strategy() -> impl Strategy<Value = DateTime<Utc>> {
    // RFC 3339 only encodes years 0000-9999, with a four-digit, non-negative
    // year field, so cap the strategy at year 9999.
    (0i64..253_402_214_400i64, 0u32..1_000_000_000).prop_map(|(s, n)| {
        Utc.timestamp_opt(s, n)
            .single()
            .expect("strategy bounds keep timestamps valid")
    })
}

proptest! {
    #![proptest_config(ProptestConfig::with_cases(64))]

    #[test]
    fn text_round_trip(p in datetime_strategy()) {
        let s = to_text(&p).expect("to_text");
        let back = from_text(&s).expect("from_text");
        prop_assert_eq!(back, p);
    }

    #[test]
    fn json_round_trip(p in datetime_strategy()) {
        let j = to_json(&p).expect("to_json");
        let back = from_json(&j).expect("from_json");
        prop_assert_eq!(back, p);
    }
}

#[test]
fn empty_text_rejected() {
    assert_eq!(from_text(""), Err(ParseError::Empty));
}

#[test]
fn garbage_text_rejected() {
    assert!(matches!(
        from_text("not a date"),
        Err(ParseError::BadFormat(_))
    ));
}

#[test]
fn json_wrong_type() {
    assert_eq!(
        from_json(&Value::Number(serde_json::Number::from(1u64))),
        Err(ParseError::TypeField {
            expected: "string",
            field: None,
        })
    );
}

#[test]
fn accepts_non_utc_offset_and_converts() {
    let v = from_text("2025-04-12T13:14:15+02:00").expect("parse");
    assert_eq!(v.timezone(), Utc);
}

fn dt_at_year(year: i32) -> DateTime<Utc> {
    let date = NaiveDate::from_ymd_opt(year, 1, 1).expect("valid date");
    date.and_hms_opt(0, 0, 0).expect("valid time").and_utc()
}

#[test]
fn year_zero_accepted() {
    let dt = dt_at_year(0);
    assert!(to_text(&dt).is_ok());
    assert!(to_json(&dt).is_ok());
}

#[test]
fn year_9999_accepted() {
    let dt = dt_at_year(9999);
    assert!(to_text(&dt).is_ok());
    assert!(to_json(&dt).is_ok());
}

#[test]
fn negative_year_rejected() {
    let dt = dt_at_year(-1);
    assert_eq!(to_text(&dt), Err(ParseError::OutOfRange("datetime year")));
    assert_eq!(to_json(&dt), Err(ParseError::OutOfRange("datetime year")));
}

#[test]
fn year_above_max_rejected() {
    let dt = dt_at_year(10_000);
    assert_eq!(to_text(&dt), Err(ParseError::OutOfRange("datetime year")));
    assert_eq!(to_json(&dt), Err(ParseError::OutOfRange("datetime year")));
}