cranpose-render-wgpu 0.9.5

WGPU renderer backend for Cranpose
Documentation 
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use super::*;

fn ticks(values: &[u64]) -> Vec<u8> {
    values.iter().flat_map(|v| v.to_le_bytes()).collect()
}

#[test]
fn accumulate_frame_attributes_ticks_by_label() {
    let mut totals = vec![LabelTotal::default(); 2];
    let mapped = ticks(&[1_000, 1_100, 1_100, 1_150, 1_150, 1_160]);
    assert_eq!(
        accumulate_frame(&mut totals, &[(0, 0), (1, 2), (0, 4)], &mapped, 2.0),
        Some(320)
    );
    assert_eq!(totals[0].nanoseconds, 220);
    assert_eq!(totals[0].passes, 2);
    assert_eq!(totals[1].nanoseconds, 100);
    assert_eq!(totals[1].passes, 1);
}

#[test]
fn accumulate_frame_rejects_incomplete_frames() {
    let mut totals = vec![LabelTotal::default(); 1];
    let mapped = ticks(&[500, 400]);
    assert_eq!(accumulate_frame(&mut totals, &[(0, 0)], &mapped, 1.0), None);
    assert_eq!(totals[0].passes, 0, "an end before its begin is skipped");

    assert_eq!(accumulate_frame(&mut totals, &[(0, 6)], &mapped, 1.0), None);
    assert_eq!(totals[0].passes, 0, "indices past the mapping are skipped");

    let mapped = ticks(&[100, 250]);
    assert_eq!(accumulate_frame(&mut totals, &[(9, 0)], &mapped, 1.0), None);
    assert_eq!(totals[0].passes, 0, "an unknown label id is skipped");
    for invalid_pair in [[0, 250], [100, u64::MAX], [500, 400]] {
        let mapped = ticks(&[100, 250, invalid_pair[0], invalid_pair[1]]);
        assert_eq!(
            accumulate_frame(&mut totals, &[(0, 0), (0, 2)], &mapped, 1.0),
            None
        );
        assert_eq!(
            totals[0].passes, 0,
            "a valid prefix must not leak into the report"
        );
    }
}