gnome-shell/tests/unit/signalTracker.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
// Test cases for version comparison
const GObject = imports.gi.GObject;
const JsUnit = imports.jsUnit;
const Signals = imports.misc.signals;
const Environment = imports.ui.environment;
const { TransientSignalHolder, registerDestroyableType } = imports.misc.signalTracker;
Environment.init();
const Destroyable = GObject.registerClass({
Signals: { 'destroy': {} },
}, class Destroyable extends GObject.Object {});
registerDestroyableType(Destroyable);
const GObjectEmitter = GObject.registerClass({
Signals: { 'signal': {} },
}, class GObjectEmitter extends Destroyable {});
const emitter1 = new Signals.EventEmitter();
const emitter2 = new GObjectEmitter();
const tracked1 = new Destroyable();
const tracked2 = {};
let count = 0;
const handler = () => count++;
emitter1.connectObject('signal', handler, tracked1);
emitter2.connectObject('signal', handler, tracked1);
emitter1.connectObject('signal', handler, tracked2);
emitter2.connectObject('signal', handler, tracked2);
JsUnit.assertEquals(count, 0);
emitter1.emit('signal');
emitter2.emit('signal');
JsUnit.assertEquals(count, 4);
tracked1.emit('destroy');
emitter1.emit('signal');
emitter2.emit('signal');
JsUnit.assertEquals(count, 6);
emitter1.disconnectObject(tracked2);
emitter2.emit('destroy');
emitter1.emit('signal');
emitter2.emit('signal');
JsUnit.assertEquals(count, 6);
emitter1.connectObject(
'signal', handler,
'signal', handler, GObject.ConnectFlags.AFTER,
tracked1);
emitter2.connectObject(
'signal', handler,
'signal', handler, GObject.ConnectFlags.AFTER,
tracked1);
emitter1.emit('signal');
emitter2.emit('signal');
JsUnit.assertEquals(count, 10);
tracked1.emit('destroy');
emitter1.emit('signal');
emitter2.emit('signal');
JsUnit.assertEquals(count, 10);
emitter1.connectObject('signal', handler, tracked1);
emitter2.connectObject('signal', handler, tracked1);
transientHolder = new TransientSignalHolder(tracked1);
emitter1.connectObject('signal', handler, transientHolder);
emitter2.connectObject('signal', handler, transientHolder);
emitter1.emit('signal');
emitter2.emit('signal');
JsUnit.assertEquals(count, 14);
transientHolder.destroy();
emitter1.emit('signal');
emitter2.emit('signal');
JsUnit.assertEquals(count, 16);
transientHolder = new TransientSignalHolder(tracked1);
emitter1.connectObject('signal', handler, transientHolder);
emitter2.connectObject('signal', handler, transientHolder);
emitter1.emit('signal');
emitter2.emit('signal');
JsUnit.assertEquals(count, 20);
tracked1.emit('destroy');
emitter1.emit('signal');
emitter2.emit('signal');
JsUnit.assertEquals(count, 20);