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Trace: cover the column pass and mixed pairs in the smoothing tests (#5454)

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Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
vangel76
2026-11-04 08:13:22 +07:00
committed by bflatastic
co-authored by Claude Sonnet 5.5
parent 5bc34676ce
commit df3f18329e
1 changed files with 12 additions and 2 deletions
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crates/trace/src/smooth.rs
+12 -2
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@@ -195,8 +195,11 @@ mod tests {
let weights = weight_table();
for p in 0..=255u8 {
for q in 0..=255u8 {
let src = [p, p, p, 255, q, q, q, 255];
assert_eq!(pass(&src, 2, 1, true, &weights), reference(&src, 2, 1, true), "{p} {q}");
// Grey, and a mixed pair, along a row (2x1) and along a column (1x2).
for src in [[p, p, p, 255, q, q, q, 255], [p, q, p ^ q, 255, q, p, q ^ 0x5a, 255]] {
assert_eq!(pass(&src, 2, 1, true, &weights), reference(&src, 2, 1, true), "{p} {q}");
assert_eq!(pass(&src, 1, 2, false, &weights), reference(&src, 1, 2, false), "{p} {q}");
}
}
}
}
@@ -208,6 +211,13 @@ mod tests {
{
assert_eq!(level(v), v.round() as u8, "{v}");
}
// Values a hair either side of every half, where a wrong rounding would show.
for k in 0..255 {
let half = f64::from(k) + 0.5;
for v in [half, f64::from_bits(half.to_bits() - 1), f64::from_bits(half.to_bits() + 1)] {
assert_eq!(level(v), v.round() as u8, "{v}");
}
}
for i in 0..=255 * 4096u32 {
let v = f64::from(i) / 4096.0;
assert_eq!(level(v), v.round() as u8, "{v}");