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/* 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/. */
requestLongerTimeout(10);
/**
* Test the JS Allocations feature. This is done as a browser test to ensure that
* we realistically try out how the JS allocations are running. This ensures that
* we are collecting allocations for the content process and the parent process.
*/
add_task(async function test_profile_feature_jsallocations() {
Assert.ok(
!Services.profiler.IsActive(),
"The profiler is not currently active"
);
await startProfiler({ features: ["js", "jsallocations"] });
const url = BASE_URL + "do_work_500ms.html";
await BrowserTestUtils.withNewTab(url, async contentBrowser => {
const contentPid = await SpecialPowers.spawn(
contentBrowser,
[],
() => Services.appinfo.processID
);
// Wait 500ms so that the tab finishes executing.
await wait(500);
// Check that we can get some allocations when the feature is turned on.
{
const { parentThread, contentThread } =
await waitSamplingAndStopProfilerAndGetThreads(contentPid);
Assert.greater(
getPayloadsOfType(parentThread, "JS allocation").length,
0,
"Allocations were recorded for the parent process' main thread when the " +
"JS Allocation feature was turned on."
);
Assert.greater(
getPayloadsOfType(contentThread, "JS allocation").length,
0,
"Allocations were recorded for the content process' main thread when the " +
"JS Allocation feature was turned on."
);
}
await startProfiler({ features: ["js"] });
// Now reload the tab with a clean run.
gBrowser.reload();
await wait(500);
// Check that no allocations were recorded, and allocation tracking was correctly
// turned off.
{
const { parentThread, contentThread } =
await waitSamplingAndStopProfilerAndGetThreads(contentPid);
Assert.equal(
getPayloadsOfType(parentThread, "JS allocation").length,
0,
"No allocations were recorded for the parent processes' main thread when " +
"JS allocation was not turned on."
);
Assert.equal(
getPayloadsOfType(contentThread, "JS allocation").length,
0,
"No allocations were recorded for the content processes' main thread when " +
"JS allocation was not turned on."
);
}
});
});
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