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#2465: test the Linear ease preset's interpolation and edited speeds

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Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RDvxCS8xcR28VArjzn1x7U
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Claude Code
2026-10-29 08:58:50 +00:00
parent 891757e2f5
commit 7a3bd9dcdf
1 changed files with 28 additions and 0 deletions
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crates/script/src/tests/ease_presets.rs
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@@ -608,3 +608,31 @@ fn presets_saved_by_the_old_core_panel_carry_over() {
let win = open_panel(&mut s);
assert_eq!(control(&mut s, win, "presets")["items"].as_array().unwrap().len(), 12);
}
/// #2465: the Linear preset sets Linear interpolation on every side it applies to, including the
/// first key's out side and the last key's in side; editing its speeds makes a Bezier curve.
#[test]
fn the_linear_preset_sets_linear_interpolation_and_edited_speeds_give_bezier() {
let store = Arc::new(MemoryConfig::default());
let mut s = session(&store);
let l = setup(&mut s);
animate(&mut s, l, "transform/opacity", &[(0.0, json!(0)), (1.0, json!(100)), (3.0, json!(20))]);
s.execute("prop.select", json!({"layer": l, "path": "transform/opacity"})).unwrap();
let win = open_panel(&mut s);
// Start from Bezier keys so Linear has something to restore.
set(&mut s, win, "presets", json!("Ease In-Out"));
let op = prop(&s, l, "transform/opacity");
assert!(op.keys[0].out_interp == Interp::Bezier && op.keys[2].in_interp == Interp::Bezier);
let steps = s.history.undo.len();
set(&mut s, win, "presets", json!("Linear"));
assert_eq!(s.history.undo.len(), steps + 1, "one undo step");
let op = prop(&s, l, "transform/opacity");
for (i, k) in op.keys.iter().enumerate() {
assert_eq!((k.in_interp, k.out_interp), (Interp::Linear, Interp::Linear), "key {i}");
}
// Edited speeds make a custom Bezier curve even though Linear is still the selected preset.
select_keys(&mut s, l, &[("transform/opacity", 1.0)]);
apply_typed(&mut s, win, "In-Out", [33.0, 2.0, 33.0, 2.0]);
let k = &prop(&s, l, "transform/opacity").keys[1];
assert_eq!((k.in_interp, k.out_interp), (Interp::Bezier, Interp::Bezier));
}