forked from mirrors/gecko-dev
34824c4105
MozReview-Commit-ID: FprlN3Vm9H7 --HG-- extra : rebase_source : f9b225e5a4464b7e6f937e4670a0bfbf472dc916
61 lines
1.7 KiB
JavaScript
61 lines
1.7 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
|
|
http://creativecommons.org/publicdomain/zero/1.0/ */
|
|
"use strict";
|
|
|
|
/* globals dump */
|
|
|
|
const { CC } = require("chrome");
|
|
const { Task } = require("devtools/shared/task");
|
|
const DevToolsUtils = require("devtools/shared/DevToolsUtils");
|
|
const { once, observeOnce } = require("devtools/client/performance/test/helpers/event-utils");
|
|
|
|
/**
|
|
* Blocks the main thread for the specified amount of time.
|
|
*/
|
|
exports.busyWait = function (time) {
|
|
dump(`Busy waiting for: ${time} milliseconds.\n`);
|
|
let start = Date.now();
|
|
/* eslint-disable no-unused-vars */
|
|
let stack;
|
|
while (Date.now() - start < time) {
|
|
stack = CC.stack;
|
|
}
|
|
/* eslint-enable no-unused-vars */
|
|
};
|
|
|
|
/**
|
|
* Idly waits for the specified amount of time.
|
|
*/
|
|
exports.idleWait = function (time) {
|
|
dump(`Idly waiting for: ${time} milliseconds.\n`);
|
|
return DevToolsUtils.waitForTime(time);
|
|
};
|
|
|
|
/**
|
|
* Waits until a predicate returns true.
|
|
*/
|
|
exports.waitUntil = function* (predicate, interval = 100, tries = 100) {
|
|
for (let i = 1; i <= tries; i++) {
|
|
if (yield Task.spawn(predicate)) {
|
|
dump(`Predicate returned true after ${i} tries.\n`);
|
|
return;
|
|
}
|
|
yield exports.idleWait(interval);
|
|
}
|
|
throw new Error(`Predicate returned false after ${tries} tries, aborting.\n`);
|
|
};
|
|
|
|
/**
|
|
* Waits for a `MozAfterPaint` event to be fired on the specified window.
|
|
*/
|
|
exports.waitForMozAfterPaint = function (window) {
|
|
return once(window, "MozAfterPaint");
|
|
};
|
|
|
|
/**
|
|
* Waits for the `browser-delayed-startup-finished` observer notification
|
|
* to be fired on the specified window.
|
|
*/
|
|
exports.waitForDelayedStartupFinished = function (window) {
|
|
return observeOnce("browser-delayed-startup-finished", { expectedSubject: window });
|
|
};
|