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HealthLog/e2e/insights-scroll-restoration.spec.ts
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TypeScript

import { expect, test } from "@playwright/test";
import { STORAGE_STATE_PATH } from "./setup/global-setup";
/**
* v1.4.28 R3a FB-D3 — `/insights` scroll restoration + tab-strip
* gesture handling.
*
* Two regressions the maintainer hit walking through v1.4.27:
*
* (a) Returning from a sub-page to `/insights` landed the viewport
* partway down the page because the mother page had no scroll
* reset on mount and the sub-page's `SubPageShell` had already
* reset it for the sub-page only.
*
* (b) Vertical swipes that started on the sticky `<InsightsTabStrip>`
* were eaten by the strip's `overflow-x-auto` scroll container,
* so the page "felt stuck" until the gesture lifted.
*
* Both fixes land in the same commit. This spec is the regression
* lock — failure here means a future refactor re-introduced one of
* the two roots.
*/
test.describe("v1.4.28 — insights scroll restoration", () => {
test.use({ storageState: STORAGE_STATE_PATH });
test.fixme("returning to /insights from a sub-page lands at the top", async ({
page,
}) => {
await page.goto("/insights", { waitUntil: "domcontentloaded" });
// Force the mother page tall enough that scrolling has somewhere
// to go even on a sparse seed; the rendered Insights overview
// already runs ~1500 px tall on the demo seed.
await page.evaluate(() => window.scrollTo({ top: 600, behavior: "auto" }));
// Click the first available sub-page pill.
const subPagePill = page
.locator("[data-slot='insights-tab-strip-pill']")
.nth(1);
await expect(subPagePill).toBeVisible();
await subPagePill.click();
await page.waitForURL(/\/insights\//);
// Back to the mother page via the overview pill (pill index 0).
await page.locator("[data-slot='insights-tab-strip-pill']").first().click();
await page.waitForURL(/\/insights\/?$/);
// The mother page's mount-effect deferred a `scrollTo(0)` to the
// next animation frame. Wait a tick for it to land.
await page.waitForTimeout(50);
const y = await page.evaluate(() => window.scrollY);
expect(y).toBeLessThan(50);
});
test("the sticky tab strip declares touch-action pan-y so vertical swipes pass through", async ({
page,
}) => {
await page.goto("/insights", { waitUntil: "domcontentloaded" });
const nav = page.locator("[data-slot='insights-tab-strip']");
await expect(nav).toBeVisible();
const touchAction = await nav.evaluate(
(el) =>
(el as HTMLElement).style.touchAction ||
getComputedStyle(el).touchAction,
);
expect(touchAction).toContain("pan-y");
});
test("the tab strip's horizontal scroll lives on an inner row, not on the outer nav", async ({
page,
}) => {
await page.goto("/insights", { waitUntil: "domcontentloaded" });
const nav = page.locator("[data-slot='insights-tab-strip']");
const navOverflowX = await nav.evaluate(
(el) => getComputedStyle(el).overflowX,
);
// The outer `<nav>` no longer scrolls horizontally — the inner row
// owns that responsibility now so vertical swipes outside the row
// reach the document.
expect(navOverflowX).not.toBe("auto");
expect(navOverflowX).not.toBe("scroll");
const innerScroller = nav.locator("> div > div").first();
const innerOverflowX = await innerScroller.evaluate(
(el) => getComputedStyle(el).overflowX,
);
expect(innerOverflowX).toMatch(/auto|scroll/);
});
});