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test(sdk): cover attachSync mirroring for setVariableValue and setTiming

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setVariableValue is the headline case the sync spec was built for and
had no coverage; setTiming (data-start/data-end mirroring) was also
untested. Both regression-checked by temporarily breaking the
underlying mutate/apply-patches code paths and confirming the new
assertions fail.
This commit is contained in:
Vance Ingalls
2026-07-09 11:52:14 -07:00
parent 393eced906
commit fbb6a33c91
1 changed files with 37 additions and 0 deletions
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packages/sdk/src/adapters/iframe.sync.test.ts
+37
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@@ -196,4 +196,41 @@ window.__timelines = { t: tl };</script>
) as HTMLElement;
expect(liveTitle.style.getPropertyValue("color")).not.toBe("#f00");
});
it("mirrors setVariableValue onto the live root's CSS custom property", async () => {
const html = `<!DOCTYPE html>
<html data-composition-variables='[{"id":"accent","default":"#fff"}]'>
<body>
<div data-hf-id="hf-stage" data-hf-root style="--accent: #fff; width: 1280px; height: 720px" data-duration="5">
<h1 data-hf-id="hf-title" style="color: var(--accent)">Hello World</h1>
</div>
</body>
</html>`;
const iframe = mountIframe(html);
const comp = await openComposition(html);
const adapter = createIframePreviewAdapter(iframe);
adapter.attachSync(comp);
comp.setVariableValue("accent", "#0f0");
const liveRoot = iframe.contentDocument!.querySelector(
'[data-hf-id="hf-stage"]',
) as HTMLElement;
expect(liveRoot.style.getPropertyValue("--accent")).toBe("#0f0");
});
it("mirrors setTiming onto the live element's data-start/data-end attributes", async () => {
const iframe = mountIframe(BASE_HTML);
const comp = await openComposition(BASE_HTML);
const adapter = createIframePreviewAdapter(iframe);
adapter.attachSync(comp);
comp.setTiming("hf-title", { start: 1, duration: 2 });
const liveTitle = iframe.contentDocument!.querySelector(
'[data-hf-id="hf-title"]',
) as HTMLElement;
expect(liveTitle.getAttribute("data-start")).toBe("1");
expect(liveTitle.getAttribute("data-end")).toBe("3");
});
});