gecko-dev/browser/devtools/performance/test/browser_perf-compatibility-05.js

77 lines
3.1 KiB
JavaScript

/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
/**
* Tests that when using an older server (< Fx40) where the profiler actor does not
* have the `filterable` trait, the samples are filtered by time on the client, rather
* than the more performant platform code.
*/
const WAIT_TIME = 1000; // ms
function spawnTest () {
let { panel } = yield initPerformance(SIMPLE_URL);
let { gFront: front, gTarget: target } = panel.panelWin;
let connection = getPerformanceActorsConnection(target);
// Explicitly override the profiler's trait `filterable`
connection._profiler.traits.filterable = false;
// Ugly, but we need to also not send the startTime to the server
// so we don't filter it both on the server and client
let request = target.client.request;
target.client.request = (data, res) => {
// Copy so we don't destructively change the request object, as we use
// the startTime on this object for filtering in the callback
let newData = merge({}, data, { startTime: void 0 });
request.call(target.client, newData, res);
};
// Perform the first recording...
let firstRecording = yield front.startRecording();
let firstRecordingStartTime = firstRecording._profilerStartTime;
info("Started profiling at: " + firstRecordingStartTime);
busyWait(WAIT_TIME); // allow the profiler module to sample some cpu activity
yield front.stopRecording(firstRecording);
is(firstRecordingStartTime, 0,
"The profiling start time should be 0 for the first recording.");
ok(firstRecording.getDuration() >= WAIT_TIME,
"The first recording duration is correct.");
// Perform the second recording...
let secondRecording = yield front.startRecording();
let secondRecordingStartTime = secondRecording._profilerStartTime;
info("Started profiling at: " + secondRecordingStartTime);
busyWait(WAIT_TIME); // allow the profiler module to sample more cpu activity
yield front.stopRecording(secondRecording);
let secondRecordingProfile = secondRecording.getProfile();
let secondRecordingSamples = secondRecordingProfile.threads[0].samples.data;
isnot(secondRecording._profilerStartTime, 0,
"The profiling start time should not be 0 on the second recording.");
ok(secondRecording.getDuration() >= WAIT_TIME,
"The second recording duration is correct.");
const TIME_SLOT = secondRecordingProfile.threads[0].samples.schema.time;
info("Second profile's first sample time: " + secondRecordingSamples[0][TIME_SLOT]);
ok(secondRecordingSamples[0][TIME_SLOT] < secondRecordingStartTime,
"The second recorded sample times were normalized.");
ok(secondRecordingSamples[0][TIME_SLOT] > 0,
"The second recorded sample times were normalized correctly.");
ok(!secondRecordingSamples.find(e => e[TIME_SLOT] + secondRecordingStartTime <= firstRecording.getDuration()),
"There should be no samples from the first recording in the second one, " +
"even though the total number of frames did not overflow.");
target.client.request = request;
yield teardown(panel);
finish();
}