Files
UXP-Fixed/devtools/client/framework/test/browser_toolbox_races.js
T
2018-02-02 04:16:08 -05:00

82 lines
2.4 KiB
JavaScript

/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
// Test toggling the toolbox quickly and see if there is any race breaking it.
const URL = "data:text/html;charset=utf-8,Toggling devtools quickly";
add_task(function* () {
// Make sure this test starts with the selectedTool pref cleared. Previous
// tests select various tools, and that sets this pref.
Services.prefs.clearUserPref("devtools.toolbox.selectedTool");
let tab = yield addTab(URL);
let created = 0, ready = 0, destroy = 0, destroyed = 0;
let onCreated = () => {
created++;
};
let onReady = () => {
ready++;
};
let onDestroy = () => {
destroy++;
};
let onDestroyed = () => {
destroyed++;
};
gDevTools.on("toolbox-created", onCreated);
gDevTools.on("toolbox-ready", onReady);
gDevTools.on("toolbox-destroy", onDestroy);
gDevTools.on("toolbox-destroyed", onDestroyed);
// The current implementation won't toggle the toolbox many times,
// instead it will ignore toggles that happens while the toolbox is still
// creating or still destroying.
// Toggle the toolbox at least 3 times.
info("Trying to toggle the toolbox 3 times");
while (created < 3) {
// Sent multiple event to try to race the code during toolbox creation and destruction
toggle();
toggle();
toggle();
// Release the event loop to let a chance to actually create or destroy the toolbox!
yield wait(50);
}
info("Toggled the toolbox 3 times");
// Now wait for the 3rd toolbox to be fully ready before closing it.
// We close the last toolbox manually, out of the first while() loop to
// avoid races and be sure we end up we no toolbox and waited for all the
// requests to be done.
while (ready != 3) {
yield wait(100);
}
toggle();
while (destroyed != 3) {
yield wait(100);
}
is(created, 3, "right number of created events");
is(ready, 3, "right number of ready events");
is(destroy, 3, "right number of destroy events");
is(destroyed, 3, "right number of destroyed events");
gDevTools.off("toolbox-created", onCreated);
gDevTools.off("toolbox-ready", onReady);
gDevTools.off("toolbox-destroy", onDestroy);
gDevTools.off("toolbox-destroyed", onDestroyed);
gBrowser.removeCurrentTab();
});
function toggle() {
EventUtils.synthesizeKey("VK_F12", {});
}