<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8" />
<link rel="help" href="http://www.w3.org/TR/resource-timing/#performanceresourcetiming"/>
<title>This test validates that resource timing implementations have a finite number of entries in their buffer.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
    const t = async_test("Finite resource timing entries buffer size");
    performance.onresourcetimingbufferfull = t.step_func_done(function() {
    });
    window.onload = t.step_func(
        function() {
            // Scripts appended in JS to ensure setResourceTimingBufferSize is called before.
            let counter = performance.getEntriesByType("resource").length;
            function appendScripts() {
                const documentFragment = document.createDocumentFragment();
                // Add 100 elements at a time to avoid page reflow every time.
                let numScriptsAccumulated = 0;
                while (numScriptsAccumulated < 100) {
                    const src = "resources/empty.js?" + counter;
                    const script = document.createElement('script');
                    script.type = 'text/javascript';
                    script.src = src;
                    documentFragment.appendChild(script);
                    ++counter;
                    ++numScriptsAccumulated;
                }
                document.body.appendChild(documentFragment);
                t.step_timeout(appendScripts, 20);
            }
            appendScripts();
        });
</script>
</body>
</html>