65 lines
2.3 KiB
HTML
65 lines
2.3 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8" />
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<title>This tests transfer size of resource timing when loaded from memory cache.</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="resources/entry-invariants.js"></script>
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</head>
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<body>
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<script>
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function getScript(url) {
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const script = document.createElement("script");
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const loaded = new Promise(resolve => {
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script.onload = script.onerror = resolve;
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});
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script.src = url;
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document.body.appendChild(script);
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return loaded;
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}
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function add_iframe(url) {
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return new Promise(function (resolve) {
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var frame = document.createElement('iframe');
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frame.src = url;
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frame.onload = function () { resolve(frame); };
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document.body.appendChild(frame);
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});
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}
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promise_test(async t => {
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// Add unique token to url so that each run the url is different to avoid
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// flakiness.
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let url = 'resources/resource_timing_test0.js?unique=' +
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Math.random().toString().substr(2);
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let frame;
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return add_iframe('resources/iframe-load-from-mem-cache-transfer-size.html')
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.then((f) => {
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frame = f;
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// Load script onto iframe in order to get it into the memory cache.
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return frame.contentWindow.getScript(url.split('/')[1])
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})
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.then(() => {
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// Verify that the transferSize in case of normal load is greater than
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// 0.
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assert_positive_(
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frame.contentWindow.performance.getEntriesByType('resource')
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.filter(e => e.name.includes(url))[0], ['transferSize']);
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// Load the same script onto the parent document. This time the script
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// is coming from memory cache.
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return getScript(url);
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})
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.then(() => {
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// Verify that the transferSize in case of memory cache load is 0.
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assert_zeroed_(
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window.performance.getEntriesByType('resource')
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.filter(e => e.name.includes(url))[0], ['transferSize']);
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});
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}, "The transferSize of resource timing entries should be 0 when resource \
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is loaded from memory cache.");
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</script>
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</body>
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</html>
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