vyre-conform 0.1.0

Conformance suite for vyre backends — proves byte-identical output to CPU reference
Documentation 
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use vyre_conform::backend::DispatchConfig;
use vyre_conform::{certify, CertificateStrength, Strictness, VyreBackend};

struct CpuMirrorBackend;

impl VyreBackend for CpuMirrorBackend {
    fn name(&self) -> &str {
        "cpu-mirror"
    }

    fn version(&self) -> &str {
        "test"
    }

    fn dispatch(
        &self,
        _wgsl: &str,
        input: &[u8],
        _output_size: usize,
        _config: DispatchConfig,
    ) -> Result<Vec<u8>, String> {
        if input.len() < 8 {
            return Ok(vec![0; 4]);
        }
        let left = u32::from_le_bytes([input[0], input[1], input[2], input[3]]);
        let right = u32::from_le_bytes([input[4], input[5], input[6], input[7]]);
        Ok((left ^ right).to_le_bytes().to_vec())
    }
}

#[test]
fn integer_only_certificate_has_only_integer_track() {
    let cert = certify(
        &CpuMirrorBackend,
        &[vyre_conform::specs::primitive::xor::spec()],
        CertificateStrength::FastCheck,
    )
    .unwrap();

    assert_eq!(cert.integer_track().ops().len(), 1);
    assert_eq!(cert.integer_track().ops()[0].id(), "primitive.bitwise.xor");
    assert!(cert.float_track().is_none());
    assert!(cert.approximate_track().is_none());
}

#[test]
fn approximate_spec_routes_to_approximate_track() {
    let mut approx = vyre_conform::specs::primitive::xor::spec();
    approx.id = "test.approximate.xor";
    approx.strictness = Strictness::Approximate { max_ulps: 4 };

    let cert = certify(&CpuMirrorBackend, &[approx], CertificateStrength::FastCheck).unwrap();
    let approximate_track = cert.approximate_track().as_ref().unwrap();

    assert!(cert.integer_track().ops().is_empty());
    assert!(cert.float_track().is_none());
    assert_eq!(approximate_track.ops().len(), 1);
    assert_eq!(approximate_track.ops()[0].id(), "test.approximate.xor");
}

#[test]
fn same_op_id_cannot_be_declared_strict_and_approximate() {
    let mut strict = vyre_conform::specs::primitive::xor::spec();
    strict.id = "test.mixed.xor";

    let mut approximate = vyre_conform::specs::primitive::xor::spec();
    approximate.id = "test.mixed.xor";
    approximate.strictness = Strictness::Approximate { max_ulps: 1 };

    let err = certify(
        &CpuMirrorBackend,
        &[strict, approximate],
        CertificateStrength::FastCheck,
    )
    .unwrap_err();
    assert_eq!(
        err,
        "Fix: op test.mixed.xor declared Strict AND Approximate. Split into two spec entries with different ids."
    );
}