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test(sut): hidden cross-origin iframe fixture for A11y Engine P1 #49

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test(sut): hidden cross-origin iframe fixture for A11y Engine P1 #49

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93 changes: 93 additions & 0 deletions pages/sut/ui/cross-origin-iframes.jsx
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import Head from 'next/head';

/**
* SUT fixture: cross-origin iframe capture.
*
* Hidden test page (not linked from anywhere in the app) used by the A11y Engine
* P1 sanity/WA suites to verify that, with the cross-origin iframe capture flag
* ON, the engine surfaces accessibility violations that live inside cross-origin
* iframes. Reachable only by direct path: /sut/ui/cross-origin-iframes
*
* NOTE: unlike the sibling /sut/ui/* pages this fixture is intentionally NOT
* gated behind the sutSessionId cookie. The A11y scanner loads it with no
* session, so an auth redirect would stop it before the iframes ever render.
*
* Iframes (both genuinely cross-origin to bstackdemo.com):
* 1. Our A11y demo page (browserstack.github.io) - the deterministic source of
* in-iframe violations the assertion is baselined against.
* 2. https://www.qualified.com/ - stands in as a third-party "ad" slot to prove
* capture works across an unrelated external origin too.
*/
export default function CrossOriginIframes() {
return (
<>
<Head>
<title>Cross-Origin Iframe Fixture - SUT</title>
<meta name="robots" content="noindex, nofollow" />
<link rel="icon" href="/favicon.svg" />
</Head>
<main style={styles.container}>
<header style={styles.header}>
<h1 id="fixture-title" style={styles.title}>StackDemo Partner Showcase</h1>
<p style={styles.text}>
A sample page that embeds partner content from other origins. Used to
exercise accessibility scanning across cross-origin iframe boundaries.
</p>
</header>

<section aria-labelledby="primary-frame-heading" style={styles.section}>
<h2 id="primary-frame-heading" style={styles.subtitle}>Accessibility demo content</h2>
<iframe
id="cross-origin-frame-primary"
title="A11y demo content (cross-origin)"
src="https://browserstack.github.io/bs-a11y-checks/all/index.html"
style={styles.frame}
/>
</section>

<section aria-labelledby="ad-frame-heading" style={styles.section}>
<h2 id="ad-frame-heading" style={styles.subtitle}>Sponsored</h2>
<iframe
id="cross-origin-frame-ad"
title="Sponsored partner (cross-origin)"
src="https://www.qualified.com/"
style={styles.frame}
/>
</section>
</main>
</>
);
}

const styles = {
container: {
maxWidth: '900px',
margin: '40px auto',
padding: '20px',
fontFamily: 'Inter, sans-serif',
},
header: {
marginBottom: '24px',
},
title: {
color: '#1f2937',
marginBottom: '10px',
},
subtitle: {
color: '#374151',
marginBottom: '12px',
},
text: {
fontSize: '1.05rem',
color: '#4b5563',
},
section: {
marginBottom: '32px',
},
frame: {
width: '100%',
height: '600px',
border: '1px solid #d1d5db',
borderRadius: '8px',
},
};
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