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97 lines
5 KiB
HTML
97 lines
5 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>Request Keepalive Quota Tests</title>
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<meta name="timeout" content="long">
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<meta name="help" href="https://fetch.spec.whatwg.org/#request">
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<meta name="help" href="https://fetch.spec.whatwg.org/#body-mixin">
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<meta name="author" title="Microsoft Edge" href="https://www.microsoft.com">
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<meta name="variant" content="?include=fast">
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<meta name="variant" content="?include=slow-1">
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<meta name="variant" content="?include=slow-2">
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<meta name="variant" content="?include=slow-3">
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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="/common/subset-tests-by-key.js"></script>
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</head>
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<body>
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<script>
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'use strict';
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// We want to ensure that our keepalive requests hang slightly before completing so we can validate
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// the effects of a rolling quota. To do this we will utilize trickle.py with a 1s delay. This should
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// prevent any of the Fetch's from finishing in this window.
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const trickleURL = '../resources/trickle.py?count=1&ms=';
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const noDelay = 0;
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const standardDelay = 1000;
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function wait(ms) {
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return new Promise(resolve => step_timeout(resolve, ms));
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}
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// We should expect 64KiB of rolling quota for any type of keep-alive request sent.
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const expectedQuota = 65536;
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function fetchKeepAliveRequest(delay, bodySize) {
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// Create a body of the specified size that's filled with *'s
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const body = '*'.repeat(bodySize);
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return fetch(trickleURL + delay, {keepalive: true, body, method: 'POST'}).then(res => {
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return res.text();
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}).then(() => {
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return wait(1);
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});
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}
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// Test 1 Byte
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subsetTestByKey("fast", promise_test, function(test) {
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return fetchKeepAliveRequest(noDelay, 1 /* bodySize */);
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}, 'A Keep-Alive fetch() with a small body should succeed.');
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// Test Quota full limit
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subsetTestByKey("fast", promise_test, function(test) {
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return fetchKeepAliveRequest(noDelay, expectedQuota /* bodySize */);
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}, 'A Keep-Alive fetch() with a body at the Quota Limit should succeed.');
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// Test Quota + 1 Byte
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subsetTestByKey("fast", promise_test, function(test) {
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return promise_rejects(test, TypeError(), fetchKeepAliveRequest(noDelay, expectedQuota + 1));
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}, 'A Keep-Alive fetch() with a body over the Quota Limit should reject.');
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// Test the Quota becomes available upon promise completion.
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subsetTestByKey("slow-1", promise_test, function (test) {
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// Fill our Quota then try to send a second fetch.
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return fetchKeepAliveRequest(standardDelay, expectedQuota).then(() => {
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// Now validate that we can send another Keep-Alive fetch for the full size of the quota.
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return fetchKeepAliveRequest(noDelay, expectedQuota);
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});
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}, 'A Keep-Alive fetch() should return its allocated Quota upon promise resolution.');
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// Ensure only the correct amount of Quota becomes available when a fetch completes.
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subsetTestByKey("slow-2", promise_test, function(test) {
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// Create a fetch that uses all but 1 Byte of the Quota and runs for 2x as long as the other requests.
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const first = fetchKeepAliveRequest(standardDelay * 2, expectedQuota - 1);
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// Now create a single Byte request that will complete quicker.
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const second = fetchKeepAliveRequest(standardDelay, 1 /* bodySize */).then(() => {
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// We shouldn't be able to create a 2 Byte request right now as only 1 Byte should have freed up.
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return promise_rejects(test, TypeError(), fetchKeepAliveRequest(noDelay, 2 /* bodySize */));
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}).then(() => {
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// Now validate that we can send another Keep-Alive fetch for just 1 Byte.
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return fetchKeepAliveRequest(noDelay, 1 /* bodySize */);
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});
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return Promise.all([first, second]);
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}, 'A Keep-Alive fetch() should return only its allocated Quota upon promise resolution.');
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// Test rejecting a fetch() after the quota is used up.
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subsetTestByKey("slow-3", promise_test, function (test) {
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// Fill our Quota then try to send a second fetch.
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const p = fetchKeepAliveRequest(standardDelay, expectedQuota);
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const q = promise_rejects(test, TypeError(), fetchKeepAliveRequest(noDelay, 1 /* bodySize */));
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return Promise.all([p, q]);
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}, 'A Keep-Alive fetch() should not be allowed if the Quota is used up.');
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</script>
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</body>
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</html>
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