Mypal/dom/tests/browser/browser_allocateGigabyte.js
2019-03-11 13:26:37 +03:00

44 lines
1.4 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const TEST_URI = "http://example.com/browser/dom/tests/browser/test_largeAllocation.html";
function expectProcessCreated() {
let os = Cc["@mozilla.org/observer-service;1"].getService(Ci.nsIObserverService);
return new Promise(resolve => {
let topic = "ipc:content-created";
function observer() {
os.removeObserver(observer, topic);
ok(true, "Expect process created");
resolve();
}
os.addObserver(observer, topic, /* weak = */ false);
});
}
add_task(function*() {
yield SpecialPowers.pushPrefEnv({
set: [
["dom.largeAllocationHeader.enabled", true],
]
});
// A toplevel tab should be able to navigate cross process!
yield BrowserTestUtils.withNewTab("about:blank", function*(aBrowser) {
let epc = expectProcessCreated();
yield ContentTask.spawn(aBrowser, TEST_URI, TEST_URI => {
content.document.location = TEST_URI;
});
// Wait for the new process to be created by the Large-Allocation header
yield epc;
// Allocate a gigabyte of memory in the content process
yield ContentTask.spawn(aBrowser, null, () => {
let arrayBuffer = new ArrayBuffer(1024*1024*1024);
ok(arrayBuffer, "Successfully allocated a gigabyte of memory in content process");
});
});
});