secure-connection-start-non-zero.https.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>secureConnectionStart non-zero value test</title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
</head>
<body>
    <h1>Description</h1>
    <p>The tests that secureConnectionStart has a non-zero value.</p>
<script>
    window.onload = () => {
        test(t => {
            const entry = performance.getEntriesByType("navigation")[0];
            assert_greater_than(entry.secureConnectionStart, 0, "secureConnectionStart is non-zero");
        }, "Test that secureConnectionStart is not zero");
    };

</script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/navigation-timing/secure-connection-start-non-zero.https.html