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// META: script=/common/utils.js
// META: script=resources/early-hints-helpers.sub.js
promise_test(async (t) => {
if (!navigator.pdfViewerEnabled) {
return;
}
const iframe = document.createElement("iframe");
const resource_url = SAME_ORIGIN_RESOURCES_URL + "/empty.js?" + token();
const promise = new Promise((resolve) => {
const params = new URLSearchParams();
params.set("resource-url", resource_url);
params.set("token", token());
const iframe_url = SAME_ORIGIN_RESOURCES_URL + "/pdf-with-early-hints.h2.py?" + params.toString();
iframe.src = iframe_url;
iframe.onload = resolve;
document.body.appendChild(iframe);
});
await promise;
// `iframe` should not preload the hinted resource.
const iframe_entries = iframe.contentWindow.performance.getEntriesByName(resource_url);
assert_equals(iframe_entries.length, 0);
await fetchScript(resource_url);
const entries = performance.getEntriesByName(resource_url);
assert_equals(entries.length, 1);
assert_not_equals(entries[0].transferSize, 0);
}, "Early hints for an iframe of which content is pdf should be ignored.");
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