616 lines
21 KiB
TypeScript
616 lines
21 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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(function(global: any) {
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interface ScheduledFunction {
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endTime: number;
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id: number;
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func: Function;
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args: any[];
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delay: number;
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isPeriodic: boolean;
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isRequestAnimationFrame: boolean;
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}
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interface MicroTaskScheduledFunction {
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func: Function;
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args?: any[];
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target: any;
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}
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interface MacroTaskOptions {
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source: string;
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isPeriodic?: boolean;
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callbackArgs?: any;
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}
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const OriginalDate = global.Date;
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class FakeDate {
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constructor() {
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if (arguments.length === 0) {
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const d = new OriginalDate();
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d.setTime(FakeDate.now());
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return d;
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} else {
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const args = Array.prototype.slice.call(arguments);
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return new OriginalDate(...args);
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}
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}
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static now() {
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const fakeAsyncTestZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
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if (fakeAsyncTestZoneSpec) {
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return fakeAsyncTestZoneSpec.getCurrentRealTime() + fakeAsyncTestZoneSpec.getCurrentTime();
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}
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return OriginalDate.now.apply(this, arguments);
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}
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}
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(FakeDate as any).UTC = OriginalDate.UTC;
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(FakeDate as any).parse = OriginalDate.parse;
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// keep a reference for zone patched timer function
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const timers = {
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setTimeout: global.setTimeout,
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setInterval: global.setInterval,
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clearTimeout: global.clearTimeout,
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clearInterval: global.clearInterval
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};
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class Scheduler {
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// Next scheduler id.
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public static nextId: number = 1;
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// Scheduler queue with the tuple of end time and callback function - sorted by end time.
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private _schedulerQueue: ScheduledFunction[] = [];
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// Current simulated time in millis.
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private _currentTime: number = 0;
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// Current real time in millis.
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private _currentRealTime: number = OriginalDate.now();
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// track requeuePeriodicTimer
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private _currentTickRequeuePeriodicEntries: any[] = [];
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constructor() {}
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getCurrentTime() { return this._currentTime; }
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getCurrentRealTime() { return this._currentRealTime; }
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setCurrentRealTime(realTime: number) { this._currentRealTime = realTime; }
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scheduleFunction(cb: Function, delay: number, options?: {
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args?: any[],
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isPeriodic?: boolean,
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isRequestAnimationFrame?: boolean,
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id?: number,
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isRequeuePeriodic?: boolean
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}): number {
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options = {
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...{
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args: [],
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isPeriodic: false,
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isRequestAnimationFrame: false,
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id: -1,
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isRequeuePeriodic: false
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},
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...options
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};
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let currentId = options.id ! < 0 ? Scheduler.nextId++ : options.id !;
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let endTime = this._currentTime + delay;
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// Insert so that scheduler queue remains sorted by end time.
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let newEntry: ScheduledFunction = {
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endTime: endTime,
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id: currentId,
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func: cb,
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args: options.args !,
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delay: delay,
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isPeriodic: options.isPeriodic !,
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isRequestAnimationFrame: options.isRequestAnimationFrame !
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};
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if (options.isRequeuePeriodic !) {
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this._currentTickRequeuePeriodicEntries.push(newEntry);
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}
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let i = 0;
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for (; i < this._schedulerQueue.length; i++) {
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let currentEntry = this._schedulerQueue[i];
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if (newEntry.endTime < currentEntry.endTime) {
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break;
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}
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}
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this._schedulerQueue.splice(i, 0, newEntry);
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return currentId;
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}
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removeScheduledFunctionWithId(id: number): void {
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for (let i = 0; i < this._schedulerQueue.length; i++) {
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if (this._schedulerQueue[i].id == id) {
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this._schedulerQueue.splice(i, 1);
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break;
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}
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}
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}
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tick(millis: number = 0, doTick?: (elapsed: number) => void, tickOptions?: {
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processNewMacroTasksSynchronously: boolean
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}): void {
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let finalTime = this._currentTime + millis;
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let lastCurrentTime = 0;
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tickOptions = Object.assign({processNewMacroTasksSynchronously: true}, tickOptions);
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// we need to copy the schedulerQueue so nested timeout
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// will not be wrongly called in the current tick
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// https://github.com/angular/angular/issues/33799
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const schedulerQueue = tickOptions.processNewMacroTasksSynchronously ?
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this._schedulerQueue :
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this._schedulerQueue.slice();
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if (schedulerQueue.length === 0 && doTick) {
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doTick(millis);
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return;
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}
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while (schedulerQueue.length > 0) {
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// clear requeueEntries before each loop
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this._currentTickRequeuePeriodicEntries = [];
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let current = schedulerQueue[0];
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if (finalTime < current.endTime) {
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// Done processing the queue since it's sorted by endTime.
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break;
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} else {
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// Time to run scheduled function. Remove it from the head of queue.
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let current = schedulerQueue.shift() !;
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if (!tickOptions.processNewMacroTasksSynchronously) {
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const idx = this._schedulerQueue.indexOf(current);
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if (idx >= 0) {
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this._schedulerQueue.splice(idx, 1);
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}
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}
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lastCurrentTime = this._currentTime;
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this._currentTime = current.endTime;
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if (doTick) {
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doTick(this._currentTime - lastCurrentTime);
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}
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let retval = current.func.apply(
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global, current.isRequestAnimationFrame ? [this._currentTime] : current.args);
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if (!retval) {
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// Uncaught exception in the current scheduled function. Stop processing the queue.
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break;
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}
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// check is there any requeue periodic entry is added in
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// current loop, if there is, we need to add to current loop
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if (!tickOptions.processNewMacroTasksSynchronously) {
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this._currentTickRequeuePeriodicEntries.forEach(newEntry => {
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let i = 0;
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for (; i < schedulerQueue.length; i++) {
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const currentEntry = schedulerQueue[i];
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if (newEntry.endTime < currentEntry.endTime) {
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break;
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}
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}
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schedulerQueue.splice(i, 0, newEntry);
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});
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}
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}
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}
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lastCurrentTime = this._currentTime;
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this._currentTime = finalTime;
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if (doTick) {
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doTick(this._currentTime - lastCurrentTime);
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}
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}
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flush(limit = 20, flushPeriodic = false, doTick?: (elapsed: number) => void): number {
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if (flushPeriodic) {
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return this.flushPeriodic(doTick);
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} else {
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return this.flushNonPeriodic(limit, doTick);
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}
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}
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private flushPeriodic(doTick?: (elapsed: number) => void): number {
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if (this._schedulerQueue.length === 0) {
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return 0;
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}
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// Find the last task currently queued in the scheduler queue and tick
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// till that time.
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const startTime = this._currentTime;
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const lastTask = this._schedulerQueue[this._schedulerQueue.length - 1];
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this.tick(lastTask.endTime - startTime, doTick);
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return this._currentTime - startTime;
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}
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private flushNonPeriodic(limit: number, doTick?: (elapsed: number) => void): number {
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const startTime = this._currentTime;
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let lastCurrentTime = 0;
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let count = 0;
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while (this._schedulerQueue.length > 0) {
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count++;
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if (count > limit) {
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throw new Error(
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'flush failed after reaching the limit of ' + limit +
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' tasks. Does your code use a polling timeout?');
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}
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// flush only non-periodic timers.
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// If the only remaining tasks are periodic(or requestAnimationFrame), finish flushing.
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if (this._schedulerQueue.filter(task => !task.isPeriodic && !task.isRequestAnimationFrame)
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.length === 0) {
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break;
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}
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const current = this._schedulerQueue.shift() !;
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lastCurrentTime = this._currentTime;
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this._currentTime = current.endTime;
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if (doTick) {
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// Update any secondary schedulers like Jasmine mock Date.
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doTick(this._currentTime - lastCurrentTime);
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}
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const retval = current.func.apply(global, current.args);
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if (!retval) {
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// Uncaught exception in the current scheduled function. Stop processing the queue.
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break;
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}
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}
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return this._currentTime - startTime;
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}
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}
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class FakeAsyncTestZoneSpec implements ZoneSpec {
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static assertInZone(): void {
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if (Zone.current.get('FakeAsyncTestZoneSpec') == null) {
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throw new Error('The code should be running in the fakeAsync zone to call this function');
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}
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}
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private _scheduler: Scheduler = new Scheduler();
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private _microtasks: MicroTaskScheduledFunction[] = [];
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private _lastError: Error|null = null;
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private _uncaughtPromiseErrors: {rejection: any}[] =
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(Promise as any)[(Zone as any).__symbol__('uncaughtPromiseErrors')];
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pendingPeriodicTimers: number[] = [];
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pendingTimers: number[] = [];
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private patchDateLocked = false;
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constructor(
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namePrefix: string, private trackPendingRequestAnimationFrame = false,
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private macroTaskOptions?: MacroTaskOptions[]) {
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this.name = 'fakeAsyncTestZone for ' + namePrefix;
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// in case user can't access the construction of FakeAsyncTestSpec
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// user can also define macroTaskOptions by define a global variable.
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if (!this.macroTaskOptions) {
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this.macroTaskOptions = global[Zone.__symbol__('FakeAsyncTestMacroTask')];
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}
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}
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private _fnAndFlush(fn: Function, completers: {onSuccess?: Function, onError?: Function}):
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Function {
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return (...args: any[]): boolean => {
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fn.apply(global, args);
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if (this._lastError === null) { // Success
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if (completers.onSuccess != null) {
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completers.onSuccess.apply(global);
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}
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// Flush microtasks only on success.
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this.flushMicrotasks();
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} else { // Failure
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if (completers.onError != null) {
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completers.onError.apply(global);
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}
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}
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// Return true if there were no errors, false otherwise.
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return this._lastError === null;
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};
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}
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private static _removeTimer(timers: number[], id: number): void {
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let index = timers.indexOf(id);
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if (index > -1) {
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timers.splice(index, 1);
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}
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}
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private _dequeueTimer(id: number): Function {
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return () => { FakeAsyncTestZoneSpec._removeTimer(this.pendingTimers, id); };
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}
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private _requeuePeriodicTimer(fn: Function, interval: number, args: any[], id: number):
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Function {
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return () => {
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// Requeue the timer callback if it's not been canceled.
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if (this.pendingPeriodicTimers.indexOf(id) !== -1) {
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this._scheduler.scheduleFunction(
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fn, interval, {args, isPeriodic: true, id, isRequeuePeriodic: true});
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}
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};
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}
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private _dequeuePeriodicTimer(id: number): Function {
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return () => { FakeAsyncTestZoneSpec._removeTimer(this.pendingPeriodicTimers, id); };
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}
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private _setTimeout(fn: Function, delay: number, args: any[], isTimer = true): number {
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let removeTimerFn = this._dequeueTimer(Scheduler.nextId);
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// Queue the callback and dequeue the timer on success and error.
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let cb = this._fnAndFlush(fn, {onSuccess: removeTimerFn, onError: removeTimerFn});
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let id =
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this._scheduler.scheduleFunction(cb, delay, {args, isRequestAnimationFrame: !isTimer});
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if (isTimer) {
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this.pendingTimers.push(id);
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}
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return id;
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}
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private _clearTimeout(id: number): void {
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FakeAsyncTestZoneSpec._removeTimer(this.pendingTimers, id);
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this._scheduler.removeScheduledFunctionWithId(id);
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}
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private _setInterval(fn: Function, interval: number, args: any[]): number {
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let id = Scheduler.nextId;
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let completers = {onSuccess: null as any, onError: this._dequeuePeriodicTimer(id)};
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let cb = this._fnAndFlush(fn, completers);
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// Use the callback created above to requeue on success.
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completers.onSuccess = this._requeuePeriodicTimer(cb, interval, args, id);
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// Queue the callback and dequeue the periodic timer only on error.
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this._scheduler.scheduleFunction(cb, interval, {args, isPeriodic: true});
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this.pendingPeriodicTimers.push(id);
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return id;
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}
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private _clearInterval(id: number): void {
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FakeAsyncTestZoneSpec._removeTimer(this.pendingPeriodicTimers, id);
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this._scheduler.removeScheduledFunctionWithId(id);
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}
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private _resetLastErrorAndThrow(): void {
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let error = this._lastError || this._uncaughtPromiseErrors[0];
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this._uncaughtPromiseErrors.length = 0;
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this._lastError = null;
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throw error;
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}
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getCurrentTime() { return this._scheduler.getCurrentTime(); }
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getCurrentRealTime() { return this._scheduler.getCurrentRealTime(); }
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setCurrentRealTime(realTime: number) { this._scheduler.setCurrentRealTime(realTime); }
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static patchDate() {
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if (!!global[Zone.__symbol__('disableDatePatching')]) {
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// we don't want to patch global Date
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// because in some case, global Date
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// is already being patched, we need to provide
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// an option to let user still use their
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// own version of Date.
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return;
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}
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if (global['Date'] === FakeDate) {
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// already patched
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return;
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}
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global['Date'] = FakeDate;
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FakeDate.prototype = OriginalDate.prototype;
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// try check and reset timers
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// because jasmine.clock().install() may
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// have replaced the global timer
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FakeAsyncTestZoneSpec.checkTimerPatch();
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}
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static resetDate() {
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if (global['Date'] === FakeDate) {
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global['Date'] = OriginalDate;
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}
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}
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static checkTimerPatch() {
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if (global.setTimeout !== timers.setTimeout) {
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global.setTimeout = timers.setTimeout;
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global.clearTimeout = timers.clearTimeout;
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}
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if (global.setInterval !== timers.setInterval) {
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global.setInterval = timers.setInterval;
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global.clearInterval = timers.clearInterval;
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}
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}
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lockDatePatch() {
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this.patchDateLocked = true;
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FakeAsyncTestZoneSpec.patchDate();
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}
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unlockDatePatch() {
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this.patchDateLocked = false;
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FakeAsyncTestZoneSpec.resetDate();
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}
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tick(millis: number = 0, doTick?: (elapsed: number) => void, tickOptions: {
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processNewMacroTasksSynchronously: boolean
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} = {processNewMacroTasksSynchronously: true}): void {
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FakeAsyncTestZoneSpec.assertInZone();
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this.flushMicrotasks();
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this._scheduler.tick(millis, doTick, tickOptions);
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if (this._lastError !== null) {
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this._resetLastErrorAndThrow();
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}
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}
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flushMicrotasks(): void {
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FakeAsyncTestZoneSpec.assertInZone();
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const flushErrors = () => {
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if (this._lastError !== null || this._uncaughtPromiseErrors.length) {
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// If there is an error stop processing the microtask queue and rethrow the error.
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this._resetLastErrorAndThrow();
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}
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};
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while (this._microtasks.length > 0) {
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let microtask = this._microtasks.shift() !;
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microtask.func.apply(microtask.target, microtask.args);
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}
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flushErrors();
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}
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flush(limit?: number, flushPeriodic?: boolean, doTick?: (elapsed: number) => void): number {
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FakeAsyncTestZoneSpec.assertInZone();
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this.flushMicrotasks();
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const elapsed = this._scheduler.flush(limit, flushPeriodic, doTick);
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if (this._lastError !== null) {
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this._resetLastErrorAndThrow();
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}
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return elapsed;
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}
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// ZoneSpec implementation below.
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name: string;
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properties: {[key: string]: any} = {'FakeAsyncTestZoneSpec': this};
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onScheduleTask(delegate: ZoneDelegate, current: Zone, target: Zone, task: Task): Task {
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switch (task.type) {
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case 'microTask':
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let args = task.data && (task.data as any).args;
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// should pass additional arguments to callback if have any
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// currently we know process.nextTick will have such additional
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// arguments
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let additionalArgs: any[]|undefined;
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if (args) {
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let callbackIndex = (task.data as any).cbIdx;
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if (typeof args.length === 'number' && args.length > callbackIndex + 1) {
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additionalArgs = Array.prototype.slice.call(args, callbackIndex + 1);
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}
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}
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this._microtasks.push({
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func: task.invoke,
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args: additionalArgs,
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target: task.data && (task.data as any).target
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});
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break;
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case 'macroTask':
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switch (task.source) {
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case 'setTimeout':
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task.data !['handleId'] = this._setTimeout(
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task.invoke, task.data !['delay'] !,
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Array.prototype.slice.call((task.data as any)['args'], 2));
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break;
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case 'setImmediate':
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task.data !['handleId'] = this._setTimeout(
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task.invoke, 0, Array.prototype.slice.call((task.data as any)['args'], 1));
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break;
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case 'setInterval':
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task.data !['handleId'] = this._setInterval(
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task.invoke, task.data !['delay'] !,
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Array.prototype.slice.call((task.data as any)['args'], 2));
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break;
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case 'XMLHttpRequest.send':
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throw new Error(
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'Cannot make XHRs from within a fake async test. Request URL: ' +
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(task.data as any)['url']);
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case 'requestAnimationFrame':
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case 'webkitRequestAnimationFrame':
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case 'mozRequestAnimationFrame':
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// Simulate a requestAnimationFrame by using a setTimeout with 16 ms.
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// (60 frames per second)
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task.data !['handleId'] = this._setTimeout(
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task.invoke, 16, (task.data as any)['args'],
|
|
this.trackPendingRequestAnimationFrame);
|
|
break;
|
|
default:
|
|
// user can define which macroTask they want to support by passing
|
|
// macroTaskOptions
|
|
const macroTaskOption = this.findMacroTaskOption(task);
|
|
if (macroTaskOption) {
|
|
const args = task.data && (task.data as any)['args'];
|
|
const delay = args && args.length > 1 ? args[1] : 0;
|
|
let callbackArgs =
|
|
macroTaskOption.callbackArgs ? macroTaskOption.callbackArgs : args;
|
|
if (!!macroTaskOption.isPeriodic) {
|
|
// periodic macroTask, use setInterval to simulate
|
|
task.data !['handleId'] = this._setInterval(task.invoke, delay, callbackArgs);
|
|
task.data !.isPeriodic = true;
|
|
} else {
|
|
// not periodic, use setTimeout to simulate
|
|
task.data !['handleId'] = this._setTimeout(task.invoke, delay, callbackArgs);
|
|
}
|
|
break;
|
|
}
|
|
throw new Error('Unknown macroTask scheduled in fake async test: ' + task.source);
|
|
}
|
|
break;
|
|
case 'eventTask':
|
|
task = delegate.scheduleTask(target, task);
|
|
break;
|
|
}
|
|
return task;
|
|
}
|
|
|
|
onCancelTask(delegate: ZoneDelegate, current: Zone, target: Zone, task: Task): any {
|
|
switch (task.source) {
|
|
case 'setTimeout':
|
|
case 'requestAnimationFrame':
|
|
case 'webkitRequestAnimationFrame':
|
|
case 'mozRequestAnimationFrame':
|
|
return this._clearTimeout(<number>task.data !['handleId']);
|
|
case 'setInterval':
|
|
return this._clearInterval(<number>task.data !['handleId']);
|
|
default:
|
|
// user can define which macroTask they want to support by passing
|
|
// macroTaskOptions
|
|
const macroTaskOption = this.findMacroTaskOption(task);
|
|
if (macroTaskOption) {
|
|
const handleId: number = <number>task.data !['handleId'];
|
|
return macroTaskOption.isPeriodic ? this._clearInterval(handleId) :
|
|
this._clearTimeout(handleId);
|
|
}
|
|
return delegate.cancelTask(target, task);
|
|
}
|
|
}
|
|
|
|
onInvoke(
|
|
delegate: ZoneDelegate, current: Zone, target: Zone, callback: Function, applyThis: any,
|
|
applyArgs?: any[], source?: string): any {
|
|
try {
|
|
FakeAsyncTestZoneSpec.patchDate();
|
|
return delegate.invoke(target, callback, applyThis, applyArgs, source);
|
|
} finally {
|
|
if (!this.patchDateLocked) {
|
|
FakeAsyncTestZoneSpec.resetDate();
|
|
}
|
|
}
|
|
}
|
|
|
|
findMacroTaskOption(task: Task) {
|
|
if (!this.macroTaskOptions) {
|
|
return null;
|
|
}
|
|
for (let i = 0; i < this.macroTaskOptions.length; i++) {
|
|
const macroTaskOption = this.macroTaskOptions[i];
|
|
if (macroTaskOption.source === task.source) {
|
|
return macroTaskOption;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
onHandleError(
|
|
parentZoneDelegate: ZoneDelegate, currentZone: Zone, targetZone: Zone,
|
|
error: any): boolean {
|
|
this._lastError = error;
|
|
return false; // Don't propagate error to parent zone.
|
|
}
|
|
}
|
|
|
|
// Export the class so that new instances can be created with proper
|
|
// constructor params.
|
|
(Zone as any)['FakeAsyncTestZoneSpec'] = FakeAsyncTestZoneSpec;
|
|
})(typeof window === 'object' && window || typeof self === 'object' && self || global);
|