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+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8" />
+<meta name="timeout" content="long">
+<title>Resource Timing: PerformanceResourceTiming interim resource times</title>
+<link rel="author" title="Google" href="http://www.google.com/" />
+<script src="/common/utils.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+ const {REMOTE_HOST} = get_host_info();
+ function interim_response_time_test({origin, with100, with103}) {
+ promise_test(async t => {
+ const delay = 500;
+ const url = new URL('/resource-timing/resources/header-delay.h2.py',
+ origin == "same-origin" ?
+ location.href :
+ `${location.protocol}//${REMOTE_HOST}:${location.port}`);
+ url.searchParams.set("delay", delay);
+ if (origin === "cross-origin-with-TAO")
+ url.searchParams.set("tao", "*");
+ if (with100)
+ url.searchParams.set("with100", "true");
+ if (with103)
+ url.searchParams.set("with103", "true");
+ const response = await fetch(url.toString(), {mode: "cors"});
+ assert_equals(response.status, 200)
+ await response.text();
+ const [entry] = performance.getEntriesByName(url.toString());
+ if (origin === "cross-origin") {
+ assert_equals(entry.firstInterimResponseStart, 0);
+ return;
+ }
+ let total_delay = entry.requestStart;
+ if (with100) {
+ total_delay += delay;
+ assert_greater_than(entry.firstInterimResponseStart,
+ total_delay,
+ "firstInterimResponseStart > 100 response");
+ }
+
+ if (with103) {
+ total_delay += delay;
+ if (with100) {
+ assert_less_than_equal(entry.firstInterimResponseStart,
+ total_delay, "firstInterimResponseStart > 100 response");
+ } else {
+ assert_greater_than(entry.firstInterimResponseStart,
+ delay, "firstInterimResponseStart > 100 response");
+ }
+ }
+
+ total_delay += delay;
+ if (!with100 && !with103)
+ assert_equals(entry.firstInterimResponseStart, 0);
+
+ assert_greater_than(entry.responseStart, total_delay,
+ "responseStart");
+ }, `Fetch from ${origin} ${with103 ? "with" : "without"} early hints, ${
+ with100 ? "with" : "without"} 100 response`);
+ }
+
+ for (const with103 of [true, false]) {
+ for (const with100 of [true, false]) {
+ for (origin of ['same-origin', 'cross-origin', 'cross-origin-with-TAO']) {
+ interim_response_time_test({with100, with103, origin});
+ }
+ }
+ }
+</script>
+</body>
+</html>