mozilla-central/dom/cache/test/mochitest/test_cache_tons_of_fd.html (file symbol)

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Test Info: Warnings

<!-- Any copyright is dedicated to the Public Domain.
<!DOCTYPE HTML>
<html>
<head>
<title>Test cache to create tons of fds</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<script type="text/javascript" src="driver.js"></script>
</head>
<body>
<script class="testbody" type="text/javascript">
function setupTestIframe() {
return new Promise(function(resolve) {
var iframe = document.createElement("iframe");
iframe.src = "empty.html";
iframe.onload = function() {
window.caches = iframe.contentWindow.caches;
resolve();
};
document.body.appendChild(iframe);
});
}
function clearStorage() {
return new Promise(function(resolve) {
var qms = SpecialPowers.Services.qms;
var principal = SpecialPowers.wrap(document).nodePrincipal;
var request = qms.clearStoragesForPrincipal(principal);
var cb = SpecialPowers.wrapCallback(resolve);
request.callback = cb;
});
}
async function testCreateTonsOfFD() {
const number_of_fd = 5120;
const name = "cacheTonsOfFD";
const url = "foo.com";
const body = "This is a body";
info("Stage A: Cached a Request/Response pairs");
let cache = await caches.open(name);
let request = new Request(url);
let response = new Response(body);
await cache.put(request, response);
info("Stage B: Read the cached response mutliple times");
let promise_array = [];
for (let i = 0; i < number_of_fd; ++i) {
let promise = cache.match(request);
promise_array.push(promise);
}
let cached_response_array = [];
try {
cached_response_array = await Promise.all(promise_array);
} catch (e) {
throw new Error("Fail to open tons of files with error: " + e);
}
if (cached_response_array.length != number_of_fd) {
throw new Error("Fail to cache.match the cached responses");
}
info("Stage C: Consume the cached body");
for (let i = 0; i < number_of_fd; ++i) {
if (!cached_response_array[i]) {
// Reduce the checking message.
throw new Error("The cached response doesn't exist");
}
let bodyText = "";
try {
bodyText = await cached_response_array[i].text();
} catch (e) {
throw new Error("Fail to consume the cached response's body with error: " + e);
}
if (bodyText != body) {
// Reduce the checking message.
throw new Error("The cached body doeen't be the same as original one");
}
}
ok(true, "Doesn't crash or timeout");
return Promise.resolve();
}
SimpleTest.waitForExplicitFinish();
SpecialPowers.pushPrefEnv({
"set": [["dom.caches.enabled", true],
["dom.caches.testing.enabled", true],
["dom.quotaManager.testing", true]],
}, async function() {
await setupTestIframe();
info("Stage 1: Clean storage.");
await clearStorage();
info("Stage 2: Verify open lots of files at the same time doesn't crash " +
"the browser");
try {
await testCreateTonsOfFD();
} catch (e) {
ok(false, e);
}
await SimpleTest.finish();
});
</script>
</body>
</html>