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test: scroll on mobile viewport with accelerated compositing #31992

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test: scroll on mobile viewport with accelerated compositing #31992

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30 changes: 30 additions & 0 deletions tests/assets/input/scrollable-accelerated.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,30 @@
<head>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5">
<style>

.transformed {
width: 60px;
height: 60px;
transform: perspective(500px) translate3d(500px, 0, 0px);
background-color: pink;
}

.top {
position: fixed;
z-index: 1000;
top: 0;
left: 0;
right: 0;
height: 50px;
background-color: lightblue;
}

</style>
</head>
<body>
<div class="top">Header</div>
<div style="height: 3000px; background-color: antiquewhite;">
</div>
<button>Click me</button>
<div class="transformed"></div>
</body>
13 changes: 13 additions & 0 deletions tests/library/browsercontext-viewport-mobile.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -190,6 +190,19 @@ it.describe('mobile viewport', () => {
await context.close();
});

it('should scroll when accelerating compositing needed', {
annotation: { type: 'issue', description: 'https://github.com/microsoft/playwright/issues/31551' }
}, async ({ playwright, browser, server, browserName, isLinux, headless }) => {
it.fixme(browserName === 'webkit' && isLinux && headless, 'Fails on WPE apparently due to accelerated compositing + fixed layout');
const iPhone = playwright.devices['iPhone 12'];
const context = await browser.newContext({ ...iPhone });
const page = await context.newPage();
await page.goto(server.PREFIX + '/input/scrollable-accelerated.html');
await page.getByRole('button').click();
expect(await page.evaluate(() => window.scrollY)).toBeGreaterThan(1000);
await context.close();
});

it('view scale should reset after navigation', async ({ browser, browserName }) => {
it.info().annotations.push({ type: 'issue', description: 'https://github.com/microsoft/playwright/issues/26876' });
const context = await browser.newContext({
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