// file: crates/ksp-offchain-transport-lib/unit_tests/observation.rs
// version: 1

#[test]
fn observation_preserves_pair_exact_price_semantics_timestamps_and_safe_provenance() -> ksp_core_lib::Result<()> {
    let provider_id = match crate::PriceProviderId::new("kraken") {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    let price = match crate::PriceDecimal::parse("204.125") {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    let provenance = match crate::PriceProvenance::new("market=SOL/USD") {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    let started = crate::PriceTimestamp::from_unix_millis(10_000);
    let received = crate::PriceTimestamp::from_unix_millis(10_250);
    let observation = match crate::SolUsdPriceObservation::new(
        provider_id,
        price,
        crate::PriceSemantics::ExchangeLastTrade,
        started,
        received,
        std::option::Option::None,
        provenance,
    ) {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    assert_eq!(observation.pair(), crate::PricePair::SolUsd);
    assert_eq!(observation.pair().code(), "SOL/USD");
    assert_eq!(observation.price(), price);
    assert_eq!(observation.semantics(), crate::PriceSemantics::ExchangeLastTrade);
    assert_eq!(observation.request_started_at(), started);
    assert_eq!(observation.received_at(), received);
    assert_eq!(observation.provider_timestamp(), std::option::Option::None);
    assert_eq!(observation.provenance().as_str(), "market=SOL/USD");
    return std::result::Result::Ok(());
}

#[test]
fn observation_rejects_reversed_ksp_timestamps_and_unsafe_provenance() -> ksp_core_lib::Result<()> {
    assert!(crate::PriceProvenance::new("line\nbreak").is_err());
    let provider_id = match crate::PriceProviderId::new("coingecko") {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    let price = match crate::PriceDecimal::parse("200") {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    let provenance = match crate::PriceProvenance::new("asset=solana") {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    let result = crate::SolUsdPriceObservation::new(
        provider_id,
        price,
        crate::PriceSemantics::AggregatedMarket,
        crate::PriceTimestamp::from_unix_millis(2),
        crate::PriceTimestamp::from_unix_millis(1),
        std::option::Option::None,
        provenance,
    );
    assert!(result.is_err());
    return std::result::Result::Ok(());
}