import { beforeAll, describe, expect, it } from "vitest";
import { ensureDOMParser } from "../utils/dom.js";
import { collectShotSelectors, surfaceComposition } from "./keyframes.js";
beforeAll(() => ensureDOMParser());
const wrap = (script: string) =>
``;
describe("keyframes multi-stroke traces", () => {
it("composites ≥2 position strokes on one element into a single trace", () => {
const html = wrap(`
const tl = gsap.timeline({ paused: true });
tl.to("#dot", { keyframes: { "0%": { x: -100, y: -150 }, "100%": { x: 80, y: -120 } }, duration: 1 });
tl.to("#dot", { keyframes: { "0%": { x: 80, y: 120 }, "100%": { x: 85, y: 140 } }, duration: 1 });
window.__timelines = [tl];
`);
const { traces } = surfaceComposition(html, "index.html", "index.html");
expect(traces).toHaveLength(1);
expect(traces[0]!.target).toBe("#dot");
expect(traces[0]!.strokes).toHaveLength(2);
});
it("treats a 0-duration set() between strokes as a pen-up jump, not a drawn stroke", () => {
const html = wrap(`
const tl = gsap.timeline({ paused: true });
tl.to("#dot", { keyframes: { "0%": { x: 0, y: 0 }, "100%": { x: 100, y: 0 } }, duration: 1 });
tl.set("#dot", { x: 200, y: 200 });
tl.to("#dot", { keyframes: { "0%": { x: 200, y: 200 }, "100%": { x: 250, y: 250 } }, duration: 1 });
window.__timelines = [tl];
`);
const { traces } = surfaceComposition(html, "index.html", "index.html");
expect(traces).toHaveLength(1);
// two DRAWN strokes; the set() is the pen-up gap and is excluded
expect(traces[0]!.strokes).toHaveLength(2);
});
it("leaves a single-stroke element untraced (normal per-tween output)", () => {
const html = wrap(`
const tl = gsap.timeline({ paused: true });
tl.to("#dot", { keyframes: { "0%": { x: 0, y: 0 }, "50%": { x: 200, y: -100 }, "100%": { x: 0, y: 0 } }, duration: 3 });
window.__timelines = [tl];
`);
const { traces, tweens } = surfaceComposition(html, "index.html", "index.html");
expect(traces).toHaveLength(0);
expect(tweens.length).toBeGreaterThan(0);
});
});
describe("keyframes composed-ancestor surfacing (nested elements)", () => {
const nested = (script: string) =>
``;
it("annotates a child tween with its animated ANCESTOR's motion", () => {
const html = nested(`
const tl = gsap.timeline({ paused: true });
tl.to("#hero", { keyframes: { "0%": { x: -300, y: 0 }, "100%": { x: 300, y: 0 } }, duration: 4 }, 0);
tl.to("#core", { keyframes: { "0%": { scale: 1 }, "100%": { scale: 1.5 } }, duration: 4 }, 0);
window.__timelines = [tl];
`);
const { tweens } = surfaceComposition(html, "index.html", "index.html");
const core = tweens.find((t) => t.target === "#core");
expect(core?.composedWith?.map((a) => a.selector)).toContain("#hero");
// and the ancestor's path EXTENT is summarised (range, not endpoints — so a
// closed loop still reveals its travel)
expect(core?.composedWith?.[0]!.summary).toMatch(/x -300\.\.300/);
});
it("does not annotate when the parent isn't animated", () => {
const html = nested(`
const tl = gsap.timeline({ paused: true });
tl.to("#core", { keyframes: { "0%": { scale: 1 }, "100%": { scale: 1.5 } }, duration: 4 }, 0);
window.__timelines = [tl];
`);
const { tweens } = surfaceComposition(html, "index.html", "index.html");
expect(tweens.find((t) => t.target === "#core")?.composedWith).toBeUndefined();
});
});
describe("keyframes runtime surfacing", () => {
it("surfaces CSS @keyframes and their animated selectors", () => {
const html = ``;
const { cssKeyframes } = surfaceComposition(html, "index.html", "index.html");
expect(cssKeyframes).toHaveLength(1);
expect(cssKeyframes[0]!.name).toBe("rise");
expect(cssKeyframes[0]!.selectors).toContain(".dot");
expect(cssKeyframes[0]!.keyframes.map((kf) => kf.selector)).toEqual(["0%", "100%"]);
});
it("does not let a CSS comment before @keyframes leak into the next rule's selector", () => {
const html = ``;
const { cssKeyframes } = surfaceComposition(html, "index.html", "index.html");
expect(cssKeyframes[0]!.selectors).toEqual([".dot"]);
});
it("surfaces Anime.js calls and explicit HyperFrames registration", () => {
const html = wrap(`
const tl = anime.createTimeline({ autoplay: false });
tl.add(".chip", { translateX: [0, 240], duration: 900 });
window.__hfAnime = window.__hfAnime || [];
window.__hfAnime.push(tl);
`);
const { anime } = surfaceComposition(html, "index.html", "index.html");
expect(anime).toHaveLength(1);
expect(anime[0]!.kind).toBe("timeline");
expect(anime[0]!.registered).toBe(true);
expect(anime[0]!.targets).toContain(".chip");
expect(anime[0]!.durations).toContain(900);
});
it("uses CSS and Anime targets as onion-shot candidates", () => {
const cssHtml = ``;
const animeHtml = wrap(`
const tl = anime.createTimeline({ autoplay: false });
tl.add(".chip", { translateX: [0, 240], duration: 900 });
window.__hfAnime = window.__hfAnime || [];
window.__hfAnime.push(tl);
`);
const selectors = collectShotSelectors([
surfaceComposition(cssHtml, "css.html", "css.html"),
surfaceComposition(animeHtml, "anime.html", "anime.html"),
]).map((item) => item.selector);
expect(selectors).toEqual(expect.arrayContaining([".dot", ".chip"]));
});
});