task-tracking.js
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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory() :
typeof define === 'function' && define.amd ? define(factory) :
(factory());
}(this, (function () { 'use strict';
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* A `TaskTrackingZoneSpec` allows one to track all outstanding Tasks.
*
* This is useful in tests. For example to see which tasks are preventing a test from completing
* or an automated way of releasing all of the event listeners at the end of the test.
*/
var TaskTrackingZoneSpec = (function () {
function TaskTrackingZoneSpec() {
this.name = 'TaskTrackingZone';
this.microTasks = [];
this.macroTasks = [];
this.eventTasks = [];
this.properties = { 'TaskTrackingZone': this };
}
TaskTrackingZoneSpec.get = function () {
return Zone.current.get('TaskTrackingZone');
};
TaskTrackingZoneSpec.prototype.getTasksFor = function (type) {
switch (type) {
case 'microTask':
return this.microTasks;
case 'macroTask':
return this.macroTasks;
case 'eventTask':
return this.eventTasks;
}
throw new Error('Unknown task format: ' + type);
};
TaskTrackingZoneSpec.prototype.onScheduleTask = function (parentZoneDelegate, currentZone, targetZone, task) {
task['creationLocation'] = new Error("Task '" + task.type + "' from '" + task.source + "'.");
var tasks = this.getTasksFor(task.type);
tasks.push(task);
return parentZoneDelegate.scheduleTask(targetZone, task);
};
TaskTrackingZoneSpec.prototype.onCancelTask = function (parentZoneDelegate, currentZone, targetZone, task) {
var tasks = this.getTasksFor(task.type);
for (var i = 0; i < tasks.length; i++) {
if (tasks[i] == task) {
tasks.splice(i, 1);
break;
}
}
return parentZoneDelegate.cancelTask(targetZone, task);
};
TaskTrackingZoneSpec.prototype.onInvokeTask = function (parentZoneDelegate, currentZone, targetZone, task, applyThis, applyArgs) {
if (task.type === 'eventTask')
return parentZoneDelegate.invokeTask(targetZone, task, applyThis, applyArgs);
var tasks = this.getTasksFor(task.type);
for (var i = 0; i < tasks.length; i++) {
if (tasks[i] == task) {
tasks.splice(i, 1);
break;
}
}
return parentZoneDelegate.invokeTask(targetZone, task, applyThis, applyArgs);
};
TaskTrackingZoneSpec.prototype.clearEvents = function () {
while (this.eventTasks.length) {
Zone.current.cancelTask(this.eventTasks[0]);
}
};
return TaskTrackingZoneSpec;
}());
// Export the class so that new instances can be created with proper
// constructor params.
Zone['TaskTrackingZoneSpec'] = TaskTrackingZoneSpec;
})));