diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/feed-wheel-reverse-test.js | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/tools/feed-wheel-reverse-test.js b/tools/feed-wheel-reverse-test.js index 1f133ff..632bbc6 100644 --- a/tools/feed-wheel-reverse-test.js +++ b/tools/feed-wheel-reverse-test.js @@ -57,9 +57,18 @@ for (const dir of [1, -1]) { assert(calm > 540 && calm < 700, 'a reversal and a quick second notch: about two notches of travel: ' + calm); } // From rest, well after, the wind-up is back: the same two quick notches go further. { f.advance(2500); const y = f.y; f.wheel(dir); f.advance(60); f.frame(); f.wheel(dir); settle(f); const s = (f.y - y) * dir; assert(s > calm + 40, 'two quick notches with the wind-up go further: ' + s + ' vs ' + calm); } + // A spin that keeps going after a reversal winds up again from its third + // notch: a reversal plus four quick notches goes well past five plain ones. + let spin; + { f.wheel(-dir); f.advance(17); f.frame(); f.wheel(-dir); f.advance(120); f.frame(); + const y = f.y; f.wheel(dir); for (let i = 0; i < 4; i++) { f.advance(60); f.frame(); f.wheel(dir); } settle(f); spin = (f.y - y) * dir; + assert(spin > 5 * 300 + 150, 'a spin on after a reversal winds up again: ' + spin); } + // ...and the same five quick notches from rest go about as far (the two calm ones cost little). + { f.advance(2500); const y = f.y; f.wheel(dir); for (let i = 0; i < 4; i++) { f.advance(60); f.frame(); f.wheel(dir); } settle(f); const s = (f.y - y) * dir; + assert(s < spin * 1.25, 'five from rest vs five after a reversal: ' + s + ' vs ' + spin); settle(f, 200); } // From rest a notch either way is a full push. { f.advance(2500); const y = f.y; f.wheel(dir); settle(f); const s = (f.y - y) * dir; assert(s > 280 && s < 330, 'from rest a notch either way is a full push: ' + s); } // A turn back against a coast that only just died is a reversal too (caught, no wind-up). { f.wheel(dir); settle(f, 40); f.advance(100); const y = f.y; f.wheel(-dir); f.advance(60); f.frame(); f.wheel(-dir); settle(f); const s = (y - f.y) * dir; assert(s > 520 && s < 700, 'reversing right after the coast dies: no wind-up: ' + s); } } -console.log('✓ immediate reversal both ways, stale frame timestamps, busy frame recovery, a reversal is a plain notch with no wind-up for a moment'); +console.log('✓ immediate reversal both ways, stale frame timestamps, busy frame recovery, a reversal is a plain notch, two calm notches, then the wind-up is back'); |