numcodecs-sz3 0.8.4

SZ3 codec implementation for the numcodecs API
Documentation 
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#![expect(missing_docs)]

use ::{
    ndarray as _, num_traits as _, postcard as _, schemars as _, sz3 as _, thiserror as _,
    zstd_sys as _,
};

use numcodecs::StaticCodec;
use numcodecs_sz3::Sz3Codec;
use serde::Deserialize;
use serde_json::json;

#[test]
#[should_panic(expected = "missing field `eb_mode`")]
fn empty_config() {
    let _ = Sz3Codec::from_config(Deserialize::deserialize(json!({})).unwrap());
}

#[test]
fn abs_config() {
    let codec = Sz3Codec::from_config(
        Deserialize::deserialize(json!({
            "eb_mode": "abs",
            "eb_abs": 1.0,
        }))
        .unwrap(),
    );

    assert!(codec.predictor.is_some());
}

#[test]
#[should_panic(expected = "unknown field `eb_rel`, expected `eb_abs`")]
fn abs_config_with_rel() {
    let _ = Sz3Codec::from_config(
        Deserialize::deserialize(json!({
            "eb_mode": "abs",
            "eb_abs": 1.0,
            "eb_rel": 1.0,
        }))
        .unwrap(),
    );
}

#[test]
fn config_only_abs() {
    let codec = Sz3Codec::from_config(
        Deserialize::deserialize(json!({
            "eb_mode": "abs",
            "eb_abs": 1.0,
            "predictor": null,
        }))
        .unwrap(),
    );

    assert!(codec.predictor.is_none());
}

#[test]
fn config_predictor() {
    let _ = Sz3Codec::from_config(
        Deserialize::deserialize(json!({
            "eb_mode": "rel",
            "eb_rel": 1.0,
            "predictor": "interpolation",
        }))
        .unwrap(),
    );

    let _ = Sz3Codec::from_config(
        Deserialize::deserialize(json!({
            "eb_mode": "rel",
            "eb_rel": 1.0,
            "predictor": "interpolation-lorenzo",
        }))
        .unwrap(),
    );

    let _ = Sz3Codec::from_config(
        Deserialize::deserialize(json!({
            "eb_mode": "psnr",
            "eb_psnr": 1.0,
            "predictor": "lorenzo-regression",
        }))
        .unwrap(),
    );

    let _ = Sz3Codec::from_config(
        Deserialize::deserialize(json!({
            "eb_mode": "l2",
            "eb_l2": 1.0,
            "predictor": null,
        }))
        .unwrap(),
    );
}